Subversion Repositories spi_slave

library ieee;

use ieee.std_logic_1164.all;

use IEEE.STD_LOGIC_ARITH.all;

use IEEE.STD_LOGIC_UNSIGNED.all;

use IEEE.numeric_std.all;               -- conv_integer()

package opb_spi_slave_pack is

  constant C_ADR_CTL         : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#0#, 6);

  constant C_ADR_STATUS      : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#1#, 6);

  constant C_ADR_TX_DATA     : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#2#, 6);

  constant C_ADR_RX_DATA     : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#3#, 6);

  constant C_ADR_TX_THRESH   : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#4#, 6);

  constant C_ADR_RX_THRESH   : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#5#, 6);

  constant C_ADR_TX_DMA_CTL  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#6#, 6);

  constant C_ADR_TX_DMA_ADDR : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#7#, 6);

  constant C_ADR_TX_DMA_NUM  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#8#, 6);

  constant C_ADR_RX_DMA_CTL  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#9#, 6);

  constant C_ADR_RX_DMA_ADDR : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#A#, 6);

  constant C_ADR_RX_DMA_NUM  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#B#, 6);

-- XIIF_V123B compatible

  constant C_ADR_DGIE : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#10#, 6);

  constant C_ADR_ISR  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#11#, 6);

  constant C_ADR_IER  : std_logic_vector(7 downto 2) := conv_std_logic_vector(16#12#, 6);

  constant C_NUM_FLG           : integer := 15;

  constant C_NUM_INT           : integer := 10;

  constant C_WIDTH_DMA_NUM : integer := 24;

-- CTL_Register

  -- width

  constant C_OPB_CTL_REG_WIDTH : integer := 4;

  -- bits

  constant C_OPB_CTL_REG_DGE   : integer := 0;

  constant C_OPB_CTL_REG_TX_EN : integer := 1;

  constant C_OPB_CTL_REG_RX_EN : integer := 2;

  constant C_OPB_CTL_REG_RST   : integer := 3;

  -- Status Register

  constant SPI_SR_Bit_TX_Prog_Full  : integer := 0;

  constant SPI_SR_Bit_TX_Full       : integer := 1;

  constant SPI_SR_Bit_TX_Overflow   : integer := 2;

  constant SPI_SR_Bit_TX_Prog_empty : integer := 3;

  constant SPI_SR_Bit_TX_Empty      : integer := 4;

  constant SPI_SR_Bit_TX_Underflow  : integer := 5;

  constant SPI_SR_Bit_RX_Prog_Full  : integer := 6;

  constant SPI_SR_Bit_RX_Full       : integer := 7;

  constant SPI_SR_Bit_RX_Overflow   : integer := 8;

  constant SPI_SR_Bit_RX_Prog_empty : integer := 9;

  constant SPI_SR_Bit_RX_Empty      : integer := 10;

  constant SPI_SR_Bit_RX_Underflow  : integer := 11;

  constant SPI_SR_Bit_SS_n : integer := 12;

  -- Interrupt Status Register

  constant SPI_ISR_Bit_TX_Prog_Empty : integer := 0;

  constant SPI_ISR_Bit_TX_Empty      : integer := 1;

  constant SPI_ISR_Bit_TX_Underflow  : integer := 2;

  constant SPI_ISR_Bit_RX_Prog_Full  : integer := 3;

  constant SPI_ISR_Bit_RX_Full       : integer := 4;

  constant SPI_ISR_Bit_RX_Overflow   : integer := 5;

  constant SPI_ISR_Bit_SS_Fall       : integer := 6;

  constant SPI_ISR_Bit_SS_Rise       : integer := 7;

end opb_spi_slave_pack;