Subversion Repositories neorv32

<?xml version="1.0" encoding="utf-8"?>

<device schemaVersion="1.1" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="CMSIS-SVD.xsd" >
  <vendor>stnolting</vendor>
  <name>neorv32</name>
  <series>RISC-V</series>
  <version>1.6.4</version>
  <description>The NEORV32 RISC-V Processor</description>

  <!-- CPU core -->
  <cpu>
    <name>NEORV32</name>
    <revision>r2p0</revision>
    <endian>little</endian>
    <mpuPresent>true</mpuPresent>
    <fpuPresent>true</fpuPresent>
    <fpuDP>false</fpuDP>
    <dspPresent>false</dspPresent>
    <icachePresent>true</icachePresent>
    <dcachePresent>true</dcachePresent>
    <nvicPrioBits>0</nvicPrioBits>
    <vendorSystickConfig>false</vendorSystickConfig>
  </cpu>

  <!-- defaults for all peripherals -->
  <addressUnitBits>8</addressUnitBits>
  <width>32</width>
  <size>32</size>
  <access>read-write</access>
  <resetValue>0x00000000</resetValue>
  <resetMask>0x00000000</resetMask> <!-- default IO devices do not have a dedicated reset -->

  <!-- Peripherals -->
  <peripherals>

    <!-- CFS -->
    <peripheral>
      <name>CFS</name>
      <description>Custom functions subsystem</description>
      <groupName>CFS</groupName>
      <baseAddress>0xFFFFFE00</baseAddress>

      <interrupt><name>CFS_FIRQ</name><value>1</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x80</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register><name>REG0</name><description>Application-defined</description><addressOffset>0x00</addressOffset></register>
        <register><name>REG1</name><description>Application-defined</description><addressOffset>0x04</addressOffset></register>
        <register><name>REG2</name><description>Application-defined</description><addressOffset>0x08</addressOffset></register>
        <register><name>REG3</name><description>Application-defined</description><addressOffset>0x0C</addressOffset></register>
        <register><name>REG4</name><description>Application-defined</description><addressOffset>0x10</addressOffset></register>
        <register><name>REG5</name><description>Application-defined</description><addressOffset>0x14</addressOffset></register>
        <register><name>REG6</name><description>Application-defined</description><addressOffset>0x18</addressOffset></register>
        <register><name>REG7</name><description>Application-defined</description><addressOffset>0x1C</addressOffset></register>
        <register><name>REG8</name><description>Application-defined</description><addressOffset>0x20</addressOffset></register>
        <register><name>REG9</name><description>Application-defined</description><addressOffset>0x24</addressOffset></register>
        <register><name>REG10</name><description>Application-defined</description><addressOffset>0x28</addressOffset></register>
        <register><name>REG11</name><description>Application-defined</description><addressOffset>0x2C</addressOffset></register>
        <register><name>REG12</name><description>Application-defined</description><addressOffset>0x30</addressOffset></register>
        <register><name>REG13</name><description>Application-defined</description><addressOffset>0x34</addressOffset></register>
        <register><name>REG14</name><description>Application-defined</description><addressOffset>0x38</addressOffset></register>
        <register><name>REG15</name><description>Application-defined</description><addressOffset>0x3C</addressOffset></register>
        <register><name>REG16</name><description>Application-defined</description><addressOffset>0x40</addressOffset></register>
        <register><name>REG17</name><description>Application-defined</description><addressOffset>0x44</addressOffset></register>
        <register><name>REG18</name><description>Application-defined</description><addressOffset>0x48</addressOffset></register>
        <register><name>REG19</name><description>Application-defined</description><addressOffset>0x4C</addressOffset></register>
        <register><name>REG20</name><description>Application-defined</description><addressOffset>0x50</addressOffset></register>
        <register><name>REG21</name><description>Application-defined</description><addressOffset>0x54</addressOffset></register>
        <register><name>REG22</name><description>Application-defined</description><addressOffset>0x58</addressOffset></register>
        <register><name>REG23</name><description>Application-defined</description><addressOffset>0x5C</addressOffset></register>
        <register><name>REG24</name><description>Application-defined</description><addressOffset>0x60</addressOffset></register>
        <register><name>REG25</name><description>Application-defined</description><addressOffset>0x64</addressOffset></register>
        <register><name>REG26</name><description>Application-defined</description><addressOffset>0x68</addressOffset></register>
        <register><name>REG27</name><description>Application-defined</description><addressOffset>0x6C</addressOffset></register>
        <register><name>REG28</name><description>Application-defined</description><addressOffset>0x70</addressOffset></register>
        <register><name>REG29</name><description>Application-defined</description><addressOffset>0x74</addressOffset></register>
        <register><name>REG30</name><description>Application-defined</description><addressOffset>0x78</addressOffset></register>
        <register><name>REG31</name><description>Application-defined</description><addressOffset>0x7C</addressOffset></register>
      </registers>
    </peripheral>

    <!-- PWM -->
    <peripheral>
      <name>PWM</name>
      <description>Pulse-width modulation controller</description>
      <groupName>PWM</groupName>
      <baseAddress>0xFFFFFE80</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x40</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>PWM_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>PWM controller enable flag</description>
            </field>
            <field>
              <name>PWM_CTRL_PRSCx</name>
              <bitRange>[3:1]</bitRange>
              <description>Clock prescaler select</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DUTY0</name>
          <description>Duty cycle register 0</description>
          <addressOffset>0x04</addressOffset>
        </register>
        <register>
          <name>DUTY1</name>
          <description>Duty cycle register 1</description>
          <addressOffset>0x08</addressOffset>
        </register>
        <register>
          <name>DUTY2</name>
          <description>Duty cycle register 2</description>
          <addressOffset>0x0C</addressOffset>
        </register>
        <register>
          <name>DUTY3</name>
          <description>Duty cycle register 3</description>
          <addressOffset>0x10</addressOffset>
        </register>
        <register>
          <name>DUTY4</name>
          <description>Duty cycle register 4</description>
          <addressOffset>0x14</addressOffset>
        </register>
        <register>
          <name>DUTY5</name>
          <description>Duty cycle register 5</description>
          <addressOffset>0x18</addressOffset>
        </register>
        <register>
          <name>DUTY6</name>
          <description>Duty cycle register 6</description>
          <addressOffset>0x1C</addressOffset>
        </register>
        <register>
          <name>DUTY7</name>
          <description>Duty cycle register 7</description>
          <addressOffset>0x20</addressOffset>
        </register>
        <register>
          <name>DUTY8</name>
          <description>Duty cycle register 8</description>
          <addressOffset>0x24</addressOffset>
        </register>
        <register>
          <name>DUTY9</name>
          <description>Duty cycle register 9</description>
          <addressOffset>0x28</addressOffset>
        </register>
        <register>
          <name>DUTY10</name>
          <description>Duty cycle register 10</description>
          <addressOffset>0x2C</addressOffset>
        </register>
        <register>
          <name>DUTY11</name>
          <description>Duty cycle register 11</description>
          <addressOffset>0x30</addressOffset>
        </register>
        <register>
          <name>DUTY12</name>
          <description>Duty cycle register 12</description>
          <addressOffset>0x34</addressOffset>
        </register>
        <register>
          <name>DUTY13</name>
          <description>Duty cycle register 13</description>
          <addressOffset>0x38</addressOffset>
        </register>
        <register>
          <name>DUTY14</name>
          <description>Duty cycle register 14</description>
          <addressOffset>0x3C</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- SLINK -->
    <peripheral>
      <name>SLINK</name>
      <description>Stream link interface</description>
      <groupName>SLINK</groupName>
      <baseAddress>0xFFFFFEC0</baseAddress>

      <interrupt><name>SLINK_RX_FIRQ</name><value>10</value></interrupt>
      <interrupt><name>SLINK_TX_FIRQ</name><value>11</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x40</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>SLINK_CTRL_RX_NUMx</name>
              <access>read-only</access>
              <bitRange>[3:0]</bitRange>
              <description>Number of implemented RX links</description>
            </field>
            <field>
              <name>SLINK_CTRL_TX_NUMx</name>
              <access>read-only</access>
              <bitRange>[7:4]</bitRange>
              <description>Number of implemented TX links</description>
            </field>
            <field>
              <name>SLINK_CTRL_RX_FIFO_Sx</name>
              <access>read-only</access>
              <bitRange>[11:8]</bitRange>
              <description>log2(RX FIFO size)</description>
            </field>
            <field>
              <name>SLINK_CTRL_TX_FIFO_Sx</name>
              <access>read-only</access>
              <bitRange>[15:12]</bitRange>
              <description>log2(TX FIFO size)</description>
            </field>
            <field>
              <name>SLINK_CTRL_EN</name>
              <access>read-write</access>
              <bitRange>[31:31]</bitRange>
              <description>SLINK enable flag</description>
            </field>
          </fields>
        </register>
        <register>
          <name>IRQ</name>
          <description>Link interrupt configuration register</description>
          <addressOffset>0x08</addressOffset>
          <fields>
            <field>
              <name>SLINK_IRQ_RX_EN</name>
              <bitRange>[7:0]</bitRange>
              <description>RX link interrupt enable</description>
            </field>
            <field>
              <name>SLINK_IRQ_RX_MODE</name>
              <bitRange>[15:8]</bitRange>
              <description>RX link interrupt mode</description>
            </field>
            <field>
              <name>SLINK_IRQ_TX_EN</name>
              <bitRange>[23:16]</bitRange>
              <description>TX link interrupt enable</description>
            </field>
            <field>
              <name>SLINK_IRQ_TX_MODE</name>
              <bitRange>[31:24]</bitRange>
              <description>TX link interrupt mode</description>
            </field>
          </fields>
        </register>
        <register>
          <name>STATUS</name>
          <description>Link status register</description>
          <addressOffset>0x10</addressOffset>
          <fields>
            <field>
              <name>SLINK_STATUS_RX_AVAIL</name>
              <bitRange>[7:0]</bitRange>
              <description>RX link n FIFO is NOT empty (data available)</description>
            </field>
            <field>
              <name>SLINK_STATUS_TX_FREE</name>
              <bitRange>[15:8]</bitRange>
              <description>TX link n FIFO is NOT full (ready to send)</description>
            </field>
            <field>
              <name>SLINK_STATUS_RX_HALF</name>
              <bitRange>[23:16]</bitRange>
              <description>RX link n FIFO fill level is >= half-full</description>
            </field>
            <field>
              <name>SLINK_STATUS_TX_HALF</name>
              <bitRange>[31:24]</bitRange>
              <description>TX link 0 FIFO fill level is > half-full</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA0</name>
          <description>Link 0 RTX data register</description>
          <addressOffset>0x20</addressOffset>
        </register>
        <register>
          <name>DATA1</name>
          <description>Link 1 RTX data register</description>
          <addressOffset>0x24</addressOffset>
        </register>
        <register>
          <name>DATA2</name>
          <description>Link 2 RTX data register</description>
          <addressOffset>0x28</addressOffset>
        </register>
        <register>
          <name>DATA3</name>
          <description>Link 3 RTX data register</description>
          <addressOffset>0x2C</addressOffset>
        </register>
        <register>
          <name>DATA4</name>
          <description>Link 4 RTX data register</description>
          <addressOffset>0x30</addressOffset>
        </register>
        <register>
          <name>DATA5</name>
          <description>Link 5 RTX data register</description>
          <addressOffset>0x34</addressOffset>
        </register>
        <register>
          <name>DATA6</name>
          <description>Link 6 RTX data register</description>
          <addressOffset>0x38</addressOffset>
        </register>
        <register>
          <name>DATA7</name>
          <description>Link 7 RTX data register</description>
          <addressOffset>0x3C</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- XIP -->
    <peripheral>
      <name>XIP</name>
      <description>Execute In Place Module</description>
      <groupName>CIP</groupName>
      <baseAddress>0xFFFFFF40</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x10</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>XIP_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>XIP module enable flag</description>
            </field>
            <field>
              <name>XIP_CTRL_PRSC</name>
              <bitRange>[3:1]</bitRange>
              <description>SPI clock prescaler select</description>
            </field>
            <field>
              <name>XIP_CTRL_CPOL</name>
              <bitRange>[4:4]</bitRange>
              <description>SPI clock (idle) polarity</description>
            </field>
            <field>
              <name>XIP_CTRL_CPHA</name>
              <bitRange>[5:5]</bitRange>
              <description>SPI clock phase</description>
            </field>
            <field>
              <name>XIP_CTRL_SPI_NBYTES</name>
              <bitRange>[9:6]</bitRange>
              <description>Number of bytes in SPI transmission</description>
            </field>
            <field>
              <name>XIP_CTRL_XIP_EN</name>
              <bitRange>[10:10]</bitRange>
              <description>XIP mode enable</description>
            </field>
            <field>
              <name>XIP_CTRL_XIP_ABYTES</name>
              <bitRange>[12:11]</bitRange>
              <description>Number of XIP address bytes (minus 1)</description>
            </field>
            <field>
              <name>XIP_CTRL_RD_CMD</name>
              <bitRange>[20:13]</bitRange>
              <description>SPI flash read command</description>
            </field>
            <field>
              <name>XIP_CTRL_XIP_PAGE</name>
              <bitRange>[24:21]</bitRange>
              <description>XIP memory page</description>
            </field>
            <field>
              <name>XIP_CTRL_SPI_CSEN</name>
              <bitRange>[25:25]</bitRange>
              <description>SPI chip-select enable</description>
            </field>
            <field>
              <name>XIP_CTRL_HIGHSPEED</name>
              <bitRange>[26:26]</bitRange>
              <description>SPI high-speed mode enable (ignoring XIP_CTRL_PRSC)</description>
            </field>
            <field>
              <name>XIP_CTRL_PHY_BUSY</name>
              <bitRange>[30:30]</bitRange>
              <access>read-only</access>
              <description>SPI PHY busy</description>
            </field>
            <field>
              <name>XIP_CTRL_XIP_BUSY</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>XIP access in progress</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA_LO</name>
          <description>Direct SPI access - data register low</description>
          <addressOffset>0x08</addressOffset>
        </register>
        <register>
          <name>DATA_HI</name>
          <description>Direct SPI access - data register high</description>
          <addressOffset>0x0C</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- GPTMR -->
    <peripheral>
      <name>GPTMR</name>
      <description>General purpose timer</description>
      <groupName>GPTMR</groupName>
      <baseAddress>0xFFFFFF60</baseAddress>

      <interrupt><name>GPTMR_FIRQ</name><value>12</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x10</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>GPTMR_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>Timer enable flag</description>
            </field>
            <field>
              <name>GPTMR_CTRL_PRSC</name>
              <bitRange>[3:1]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>GPTMR_CTRL_MODE</name>
              <bitRange>[4:4]</bitRange>
              <description>Timer mode: 0=single-shot mode, 1=continuous mode</description>
            </field>
          </fields>
        </register>
        <register>
          <name>THRES</name>
          <description>Threshold register</description>
          <addressOffset>0x04</addressOffset>
        </register>
        <register>
          <name>COUNT</name>
          <description>Counter register</description>
          <addressOffset>0x08</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- BUSKEEPER -->
    <peripheral>
      <name>BUSKEEPER</name>
      <description>Bus keeper</description>
      <groupName>BUSKEEPER</groupName>
      <baseAddress>0xFFFFFF7C</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x04</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>BUSKEEPER_ERR_TYPE</name>
              <bitRange>[0:0]</bitRange>
              <access>read-only</access>
              <description>Bus error type: 0=device error, 1=access timeout</description>
            </field>
            <field>
              <name>BUSKEEPER_NULL_CHECK_EN</name>
              <bitRange>[16:16]</bitRange>
              <description>Enable NULL address check when set</description>
            </field>
            <field>
              <name>BUSKEEPER_ERR_FLAG</name>
              <bitRange>[31:31]</bitRange>
              <description>Sticky error flag, clears after read or write access</description>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>

    <!-- XIRQ -->
    <peripheral>
      <name>XIRQ</name>
      <description>External interrupts controller</description>
      <groupName>XIRQ</groupName>
      <baseAddress>0xFFFFFF80</baseAddress>

      <interrupt><name>XIRQ_FIRQ</name><value>8</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x10</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>IER</name>
          <description>IRQ input enable register</description>
          <addressOffset>0x00</addressOffset>
        </register>
        <register>
          <name>IPR</name>
          <description>IRQ pending/ack/clear register</description>
          <addressOffset>0x04</addressOffset>
        </register>
        <register>
          <name>SCR</name>
          <description>IRQ source register</description>
          <addressOffset>0x08</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- MTIME -->
    <peripheral>
      <name>MTIME</name>
      <description>Machine timer</description>
      <groupName>MTIME</groupName>
      <baseAddress>0xFFFFFF90</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x10</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>TIME_LO</name>
          <description>System time register - low</description>
          <addressOffset>0x00</addressOffset>
        </register>
        <register>
          <name>TIME_HI</name>
          <description>System time register - high</description>
          <addressOffset>0x04</addressOffset>
        </register>
        <register>
          <name>TIMECMP_LO</name>
          <description>Time compare register - low</description>
          <addressOffset>0x08</addressOffset>
        </register>
        <register>
          <name>TIMECMP_HI</name>
          <description>Time compare register - high</description>
          <addressOffset>0x0C</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- UART0 -->
    <peripheral>
      <name>UART0</name>
      <description>Primary universal asynchronous receiver and transmitter</description>
      <groupName>UART0</groupName>
      <baseAddress>0xFFFFFFA0</baseAddress>

      <interrupt><name>UART0_RX_FIRQ</name><value>2</value></interrupt>
      <interrupt><name>UART0_TX_FIRQ</name><value>3</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x08</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>UART_CTRL_BAUD</name>
              <bitRange>[11:0]</bitRange>
              <description>Baud rate divisor</description>
            </field>
            <field>
              <name>UART_CTRL_SIM_MODE</name>
              <bitRange>[12:12]</bitRange>
              <description>Simulation output override enable, for use in simulation only</description>
            </field>
            <field>
              <name>UART_CTRL_RX_EMPTY</name>
              <bitRange>[13:13]</bitRange>
              <access>read-only</access>
              <description>RX FIFO is empty</description>
            </field>
            <field>
              <name>UART_CTRL_RX_HALF</name>
              <bitRange>[14:14]</bitRange>
              <access>read-only</access>
              <description>RX FIFO is at least half-full</description>
            </field>
            <field>
              <name>UART_CTRL_RX_FULL</name>
              <bitRange>[15:15]</bitRange>
              <access>read-only</access>
              <description>RX FIFO is full</description>
            </field>
            <field>
              <name>UART_CTRL_TX_EMPTY</name>
              <bitRange>[16:16]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is empty</description>
            </field>
            <field>
              <name>UART_CTRL_TX_HALF</name>
              <bitRange>[17:17]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is at least half-full</description>
            </field>
            <field>
              <name>UART_CTRL_TX_FULL</name>
              <bitRange>[18:18]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is full</description>
            </field>
            <field>
              <name>UART_CTRL_RTS_EN</name>
              <bitRange>[20:20]</bitRange>
              <description>Enable hardware flow control: Assert RTS output if UART.RX is ready to receive</description>
            </field>
            <field>
              <name>UART_CTRL_CTS_EN</name>
              <bitRange>[21:21]</bitRange>
              <description>Enable hardware flow control: UART.TX starts sending only if CTS input is asserted</description>
            </field>
            <field>
              <name>UART_CTRL_PMODE0</name>
              <bitRange>[22:22]</bitRange>
              <description>Parity configuration (0=even; 1=odd)</description>
            </field>
            <field>
              <name>UART_CTRL_PMODE1</name>
              <bitRange>[23:23]</bitRange>
              <description>Parity bit enabled when set</description>
            </field>
            <field>
              <name>UART_CTRL_PRSC</name>
              <bitRange>[26:24]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>UART_CTRL_CTS</name>
              <bitRange>[27:27]</bitRange>
              <access>read-only</access>
              <description>current state of CTS input</description>
            </field>
            <field>
              <name>UART_CTRL_EN</name>
              <bitRange>[28:28]</bitRange>
              <description>UART enable flag</description>
            </field>
            <field>
              <name>UART_CTRL_RX_IRQ</name>
              <bitRange>[29:29]</bitRange>
              <description>RX IRQ mode: 1=FIFO at least half-full; 0=FIFO not empty</description>
            </field>
            <field>
              <name>UART_CTRL_TX_IRQ</name>
              <bitRange>[30:30]</bitRange>
              <description>TX IRQ mode: 1=FIFO less than half-full; 0=FIFO not full</description>
            </field>
            <field>
              <name>UART_CTRL_TX_BUSY</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>Transmitter is busy when set</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA</name>
          <description>RX/TX data register</description>
          <addressOffset>0x04</addressOffset>
          <fields>
            <field>
              <name>UART_DATA</name>
              <bitRange>[7:0]</bitRange>
              <description>Receive/transmit data</description>
            </field>
            <field>
              <name>UART_DATA_PERR</name>
              <bitRange>[28:28]</bitRange>
              <access>read-only</access>
              <description>RX parity error detected when set</description>
            </field>
            <field>
              <name>UART_DATA_FERR</name>
              <bitRange>[29:29]</bitRange>
              <access>read-only</access>
              <description>RX frame error (no valid stop bit) detected when set</description>
            </field>
            <field>
              <name>UART_DATA_OVERR</name>
              <bitRange>[30:30]</bitRange>
              <access>read-only</access>
              <description>RX parity error detected when set</description>
            </field>
            <field>
              <name>UART_DATA_AVAIL</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>RX data available when set</description>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>

    <!-- UART1 -->
    <peripheral derivedFrom="UART0">
      <name>UART1</name>
      <description>Secondary universal asynchronous receiver and transmitter</description>
      <groupName>UART1</groupName>
      <baseAddress>0xFFFFFFD0</baseAddress>

      <interrupt><name>UART1_RX_FIRQ</name><value>4</value></interrupt>
      <interrupt><name>UART1_TX_FIRQ</name><value>5</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x08</size>
        <usage>registers</usage>
      </addressBlock>

    </peripheral>

    <!-- SPI -->
    <peripheral>
      <name>SPI</name>
      <description>Serial peripheral interface controller</description>
      <groupName>SPI</groupName>
      <baseAddress>0xFFFFFFA8</baseAddress>

      <interrupt><name>SPI_FIRQ</name><value>6</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x08</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>SPI_CTRL_CS</name>
              <bitRange>[7:0]</bitRange>
              <description>Direct chip select line</description>
            </field>
            <field>
              <name>SPI_CTRL_EN</name>
              <bitRange>[8:8]</bitRange>
              <description>SPI enable flag</description>
            </field>
            <field>
              <name>SPI_CTRL_CPHA</name>
              <bitRange>[9:9]</bitRange>
              <description>Clock phase</description>
            </field>
            <field>
              <name>SPI_CTRL_PRSC</name>
              <bitRange>[12:10]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>SPI_CTRL_SIZE</name>
              <bitRange>[14:13]</bitRange>
              <description>Data transfer size</description>
            </field>
            <field>
              <name>SPI_CTRL_CPOL</name>
              <bitRange>[15:15]</bitRange>
              <description>Clock polarity</description>
            </field>
            <field>
              <name>SPI_CTRL_HIGHSPEED</name>
              <bitRange>[16:16]</bitRange>
              <description>SPI high-speed mode enable (ignoring SPI_CTRL_PRSC)</description>
            </field>
            <field>
              <name>SPI_CTRL_BUSY</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>SPI busy flag</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA</name>
          <description>RX/TX data register</description>
          <addressOffset>0x04</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- TWI -->
    <peripheral>
      <name>TWI</name>
      <description>Two-wire interface controller</description>
      <groupName>SPI</groupName>
      <baseAddress>0xFFFFFFB0</baseAddress>

      <interrupt><name>TWI_FIRQ</name><value>7</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x08</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>TWI_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>TWI enable flag</description>
            </field>
            <field>
              <name>TWI_CTRL_START</name>
              <bitRange>[1:1]</bitRange>
              <description>Generate START condition, auto-clears</description>
            </field>
            <field>
              <name>TWI_CTRL_STOP</name>
              <bitRange>[2:2]</bitRange>
              <description>Generate STOP condition, auto-clears</description>
            </field>
            <field>
              <name>TWI_CTRL_PRSC</name>
              <bitRange>[5:3]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>TWI_CTRL_MACK</name>
              <bitRange>[6:6]</bitRange>
              <description>Generate ACK by controller for each transmission</description>
            </field>
            <field>
              <name>TWI_CTRL_ACK</name>
              <bitRange>[30:30]</bitRange>
              <access>read-only</access>
              <description>ACK received when set</description>
            </field>
            <field>
              <name>TWI_CTRL_BUSY</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>Transfer in progress, busy flag</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA</name>
          <description>RX/TX data register</description>
          <addressOffset>0x04</addressOffset>
          <fields>
            <field>
              <name>TWI_DATA</name>
              <bitRange>[7:0]</bitRange>
              <description>RX/TX data</description>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>

    <!-- TRNG -->
    <peripheral>
      <name>TRNG</name>
      <description>True random number generator</description>
      <groupName>TRNG</groupName>
      <baseAddress>0xFFFFFFB8</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x04</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control and data register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>TRNG_CTRL_DATA</name>
              <bitRange>[7:0]</bitRange>
              <access>read-only</access>
              <description>Random data</description>
            </field>
            <field>
              <name>TRNG_CTRL_EN</name>
              <bitRange>[30:30]</bitRange>
              <description>TRNG enable flag</description>
            </field>
            <field>
              <name>TRNG_CTRL_VALID</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>Random data output valid</description>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>

    <!-- WDT -->
    <peripheral>
      <name>WDT</name>
      <description>Watchdog timer</description>
      <groupName>WDT</groupName>
      <baseAddress>0xFFFFFFBC</baseAddress>

      <interrupt><name>WDT_FIRQ</name><value>0</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x04</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>WDT_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>WDT enable flag</description>
            </field>
            <field>
              <name>WDT_CTRL_CLK_SEL</name>
              <bitRange>[3:1]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>WDT_CTRL_MODE</name>
              <bitRange>[4:4]</bitRange>
              <description>Watchdog mode: 0=timeout causes interrupt, 1=timeout causes processor reset</description>
            </field>
            <field>
              <name>WDT_CTRL_RCAUSE</name>
              <bitRange>[5:5]</bitRange>
              <access>read-only</access>
              <description>Cause of last system reset: 0=external reset, 1=watchdog</description>
            </field>
            <field>
              <name>WDT_CTRL_RESET</name>
              <bitRange>[6:6]</bitRange>
              <description>Reset WDT counter when set, auto-clears</description>
            </field>
            <field>
              <name>WDT_CTRL_FORCE</name>
              <bitRange>[7:7]</bitRange>
              <description>Force WDT action, auto-clears</description>
            </field>
            <field>
              <name>WDT_CTRL_LOCK</name>
              <bitRange>[8:8]</bitRange>
              <description>Lock write access to control register, clears on reset (HW or WDT) only</description>
            </field>
            <field>
              <name>WDT_CTRL_DBEN</name>
              <bitRange>[9:9]</bitRange>
              <description>Allow WDT to continue operation even when in debug mode</description>
            </field>
            <field>
              <name>WDT_CTRL_HALF</name>
              <bitRange>[10:10]</bitRange>
              <access>read-only</access>
              <description>Set if at least half of the max. timeout counter value has been reached</description>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>

    <!-- GPIO -->
    <peripheral>
      <name>GPIO</name>
      <description>General purpose input/output port</description>
      <groupName>GPIO</groupName>
      <baseAddress>0xFFFFFFc0</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x10</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>INPUT_LO</name>
          <description>Parallel input register - low</description>
          <addressOffset>0x00</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>INPUT_HI</name>
          <description>Parallel input register - high</description>
          <addressOffset>0x04</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>OUTPUT_LO</name>
          <description>Parallel output register - low</description>
          <addressOffset>0x08</addressOffset>
        </register>
        <register>
          <name>OUTPUT_HI</name>
          <description>Parallel output register - high</description>
          <addressOffset>0x0C</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- NEOLED -->
    <peripheral>
      <name>NEOLED</name>
      <description>Smart LED hardware interface</description>
      <groupName>NEOLED</groupName>
      <baseAddress>0xFFFFFFD8</baseAddress>

      <interrupt><name>NEOLED_FIRQ</name><value>9</value></interrupt>

      <addressBlock>
        <offset>0</offset>
        <size>0x08</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CTRL</name>
          <description>Control register</description>
          <addressOffset>0x00</addressOffset>
          <fields>
            <field>
              <name>NEOLED_CTRL_EN</name>
              <bitRange>[0:0]</bitRange>
              <description>NEOLED enable flag</description>
            </field>
            <field>
              <name>NEOLED_CTRL_MODE</name>
              <bitRange>[1:1]</bitRange>
              <description>TX mode (0=24-bit, 1=32-bit)</description>
            </field>
            <field>
              <name>NEOLED_CTRL_STROBE</name>
              <bitRange>[2:2]</bitRange>
              <description>Strobe (0=send normal data, 1=send RESET command on data write)</description>
            </field>
            <field>
              <name>NEOLED_CTRL_PRSC</name>
              <bitRange>[5:3]</bitRange>
              <description>Clock prescaler select</description>
            </field>
            <field>
              <name>NEOLED_CTRL_BUFS</name>
              <bitRange>[9:6]</bitRange>
              <access>read-only</access>
              <description>log2(tx buffer size)</description>
            </field>
            <field>
              <name>NEOLED_CTRL_T_TOT</name>
              <bitRange>[14:10]</bitRange>
              <description>pulse-clock ticks per total period bit</description>
            </field>
            <field>
              <name>NEOLED_CTRL_T_ZERO_H</name>
              <bitRange>[19:15]</bitRange>
              <description>pulse-clock ticks per ZERO high-time</description>
            </field>
            <field>
              <name>NEOLED_CTRL_T_ONE_H</name>
              <bitRange>[24:20]</bitRange>
              <description>pulse-clock ticks per ONE high-time</description>
            </field>
            <field>
              <name>NEOLED_CTRL_IRQ_CONF</name>
              <bitRange>[27:27]</bitRange>
              <description>TX FIFO interrupt: 0=IRQ if FIFO is less than half-full, 1=IRQ if FIFO is empty</description>
            </field>
            <field>
              <name>NEOLED_CTRL_TX_EMPTY</name>
              <bitRange>[28:28]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is empty</description>
            </field>
            <field>
              <name>NEOLED_CTRL_TX_HALF</name>
              <bitRange>[29:29]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is at least half-full</description>
            </field>
            <field>
              <name>NEOLED_CTRL_TX_FULL</name>
              <bitRange>[30:30]</bitRange>
              <access>read-only</access>
              <description>TX FIFO is full</description>
            </field>
            <field>
              <name>NEOLED_CTRL_TX_BUSY</name>
              <bitRange>[31:31]</bitRange>
              <access>read-only</access>
              <description>busy flag</description>
            </field>
          </fields>
        </register>
        <register>
          <name>DATA</name>
          <description>Data register</description>
          <addressOffset>0x04</addressOffset>
        </register>
      </registers>
    </peripheral>

    <!-- SYSINFO -->
    <peripheral>
      <name>SYSINFO</name>
      <description>System configuration information memory</description>
      <groupName>SYSINFO</groupName>
      <baseAddress>0xFFFFFFE0</baseAddress>

      <addressBlock>
        <offset>0</offset>
        <size>0x20</size>
        <usage>registers</usage>
      </addressBlock>

      <registers>
        <register>
          <name>CLK</name>
          <description>Clock speed in Hz</description>
          <addressOffset>0x00</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>CPU</name>
          <description>CPU core features</description>
          <addressOffset>0x04</addressOffset>
          <access>read-only</access>
          <fields>
            <field><name>SYSINFO_CPU_ZICSR</name><bitRange>[0:0]</bitRange><description>Zicsr extension (I sub-extension) available when set</description></field>
            <field><name>SYSINFO_CPU_ZIFENCEI</name><bitRange>[1:1]</bitRange><description>Zifencei extension (I sub-extension) available when set</description></field>
            <field><name>SYSINFO_CPU_ZMMUL</name><bitRange>[2:2]</bitRange><description>Zmmul extension (M sub-extension) available when set</description></field>
            <field><name>SYSINFO_CPU_ZFINX</name><bitRange>[5:5]</bitRange><description>Zfinx extension (F sub-/alternative-extension) available when set</description></field>
            <field><name>SYSINFO_CPU_ZXSCNT</name><bitRange>[6:6]</bitRange><description>Custom extension - Small CPU counters</description></field>
            <field><name>SYSINFO_CPU_ZICNTR</name><bitRange>[7:7]</bitRange><description>Basic CPU counters available when set</description></field>
            <field><name>SYSINFO_CPU_PMP</name><bitRange>[8:8]</bitRange><description>PMP (physical memory protection) extension available when set</description></field>
            <field><name>SYSINFO_CPU_ZIHPM</name><bitRange>[9:9]</bitRange><description>HPM (hardware performance monitors) extension available when set</description></field>
            <field><name>SYSINFO_CPU_DEBUGMODE</name><bitRange>[10:10]</bitRange><description>RISC-V CPU debug mode available when set</description></field>
            <field><name>SYSINFO_CPU_FASTMUL</name><bitRange>[30:30]</bitRange><description>fast multiplications (via FAST_MUL_EN generic) available when set</description></field>
            <field><name>SYSINFO_CPU_FASTSHIFT</name><bitRange>[31:31]</bitRange><description>fast shifts (via FAST_SHIFT_EN generic) available when set</description></field>
          </fields>
        </register>
        <register>
          <name>SOC</name>
          <description>SoC features</description>
          <addressOffset>0x08</addressOffset>
          <access>read-only</access>
          <fields>
            <field><name>SYSINFO_SOC_BOOTLOADER</name><bitRange>[0:0]</bitRange><description>Bootloader implemented</description></field>
            <field><name>SYSINFO_SOC_MEM_EXT</name><bitRange>[1:1]</bitRange><description>External bus interface implemented</description></field>
            <field><name>SYSINFO_SOC_MEM_INT_IMEM</name><bitRange>[2:2]</bitRange><description>Processor-internal instruction memory implemented</description></field>
            <field><name>SYSINFO_SOC_MEM_INT_DMEM</name><bitRange>[3:3]</bitRange><description>Processor-internal data memory implemented</description></field>
            <field><name>SYSINFO_SOC_MEM_EXT_ENDIAN</name><bitRange>[4:4]</bitRange><description>External bus interface uses BIG-endian byte-order</description></field>
            <field><name>SYSINFO_SOC_ICACHE</name><bitRange>[5:5]</bitRange><description>Processor-internal instruction cache implemented</description></field>
            <field><name>SYSINFO_SOC_IS_SIM</name><bitRange>[13:13]</bitRange><description>Set if processor is being simulated</description></field>
            <field><name>SYSINFO_SOC_OCD</name><bitRange>[14:14]</bitRange><description>On-chip debugger implemented</description></field>
            <field><name>SYSINFO_SOC_HW_RESET</name><bitRange>[15:15]</bitRange><description>Dedicated hardware reset of core registers implemented</description></field>
            <field><name>SYSINFO_SOC_IO_GPIO</name><bitRange>[16:16]</bitRange><description>General purpose input/output port unit implemented</description></field>
            <field><name>SYSINFO_SOC_IO_MTIME</name><bitRange>[17:17]</bitRange><description>Machine system timer implemented</description></field>
            <field><name>SYSINFO_SOC_IO_UART0</name><bitRange>[18:18]</bitRange><description>Primary universal asynchronous receiver/transmitter 0 implemented</description></field>
            <field><name>SYSINFO_SOC_IO_SPI</name><bitRange>[19:19]</bitRange><description>Serial peripheral interface implemented</description></field>
            <field><name>SYSINFO_SOC_IO_TWI</name><bitRange>[20:20]</bitRange><description>Two-wire interface implemented</description></field>
            <field><name>SYSINFO_SOC_IO_PWM</name><bitRange>[21:21]</bitRange><description>Pulse-width modulation unit implemented</description></field>
            <field><name>SYSINFO_SOC_IO_WDT</name><bitRange>[22:22]</bitRange><description>Watchdog timer implemented</description></field>
            <field><name>SYSINFO_SOC_IO_CFS</name><bitRange>[23:23]</bitRange><description>Custom functions subsystem implemented</description></field>
            <field><name>SYSINFO_SOC_IO_TRNG</name><bitRange>[24:24]</bitRange><description>True random number generator implemented</description></field>
            <field><name>SYSINFO_SOC_IO_SLINK</name><bitRange>[25:25]</bitRange><description>Stream link interface implemented</description></field>
            <field><name>SYSINFO_SOC_IO_UART1</name><bitRange>[26:26]</bitRange><description>Secondary universal asynchronous receiver/transmitter 1 implemented</description></field>
            <field><name>SYSINFO_SOC_IO_NEOLED</name><bitRange>[27:27]</bitRange><description>NeoPixel-compatible smart LED interface implemented</description></field>
            <field><name>SYSINFO_SOC_IO_XIRQ</name><bitRange>[28:28]</bitRange><description>External interrupt controller implemented</description></field>
            <field><name>SYSINFO_SOC_IO_GPTMR</name><bitRange>[29:29]</bitRange><description>General purpose timer implemented</description></field>
            <field><name>SYSINFO_SOC_IO_XIP</name><bitRange>[30:30]</bitRange><description>Execute in place module implemented</description></field>
          </fields>
        </register>
        <register>
          <name>CACHE</name>
          <description>Cache configuration</description>
          <addressOffset>0x0C</addressOffset>
          <access>read-only</access>
          <fields>
            <field><name>SYSINFO_CACHE_IC_BLOCK_SIZE</name><bitRange>[3:0]</bitRange><description>i-cache: log2(Block size in bytes)</description></field>
            <field><name>SYSINFO_CACHE_IC_NUM_BLOCKS</name><bitRange>[7:4]</bitRange><description>i-cache: log2(Number of cache blocks/pages/lines)</description></field>
            <field><name>SYSINFO_CACHE_IC_ASSOCIATIVITY</name><bitRange>[11:8]</bitRange><description>i-cache: log2(associativity)</description></field>
            <field><name>SYSINFO_CACHE_IC_REPLACEMENT</name><bitRange>[15:12]</bitRange><description>i-cache: replacement policy (0001 = LRU if associativity > 0)</description></field>
          </fields>
        </register>
        <register>
          <name>ISPACE_BASE</name>
          <description>Instruction memory address space base address</description>
          <addressOffset>0x10</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>DSPACE_BASE</name>
          <description>Data memory address space base address</description>
          <addressOffset>0x14</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>IMEM_SIZE</name>
          <description>Internal instruction memory (IMEM) size in bytes</description>
          <addressOffset>0x18</addressOffset>
          <access>read-only</access>
        </register>
        <register>
          <name>DMEM_SIZE</name>
          <description>Internal data memory (DMEM) size in bytes</description>
          <addressOffset>0x1C</addressOffset>
          <access>read-only</access>
        </register>
      </registers>
    </peripheral>

  </peripherals>
</device>