| Rev |
Log message |
Author |
Age |
Path |
| 25 |
|
jdoin |
5384d 14h |
/spi_master_slave/trunk/ |
| 24 |
- fixed range of the switch debouncer for the verification circuit
- reorganized rtl folder in mainstream trunk |
jdoin |
5384d 14h |
/spi_master_slave/trunk/ |
| 23 |
Clarified copyright and licensing
Added trunk/license directory
Added LGPL 3.0 license text "lgpl.txt"
Fixed inline url for the GNU link of the LGPL license
Updated readme files and rtl files |
jdoin |
5404d 19h |
/spi_master_slave/trunk/ |
| 22 |
spi_slave.vhd: v2.02.0126 [JD]
ISSUE: the miso_o MUX that preloads tx_bit when SSEL='1' will glitch for CPHA='1'.
FIX: added a registered drive for the MUX select that will transfer the tx_reg only after the first tx_reg update. |
jdoin |
5406d 06h |
/spi_master_slave/trunk/ |
| 21 |
- Updated ISE13 verification project. |
jdoin |
5423d 09h |
/spi_master_slave/trunk/ |
| 20 |
- removed folder trunk/bench.
- added ISE13.1 complete project, with synthesis, map, place & route and timing reports. This project generates bitgen file to program a Digilent Atlys board to verify the cores in FPGA hardware, and include a simulation testbench to simulate the cores. |
jdoin |
5424d 07h |
/spi_master_slave/trunk/ |
| 19 |
v2.02.0123: ISSUE: continuous transfer mode bug, for ignored 'di_req' cycles. Instead of repeating the last data word, the slave will send (others => '0') instead. |
jdoin |
5426d 07h |
/spi_master_slave/trunk/ |
| 18 |
v2.02.0122: Fixed bug SLAVE Continuous Transfer.
The fix consists in engaging continuous transfer regardless of the user strobing write enable, and sequencing from state 1 to N as long as the master clock is present.
If the user does not write new data, the last data word is repeated. |
jdoin |
5426d 14h |
/spi_master_slave/trunk/ |
| 17 |
Master: v1.15.0136 [JD] Fixed assertions (PREFETCH >= 1) and minor comment bugs.
Slave: v2.02.0121 [JD] Changed minor comment bugs in the combinatorial fsm logic. |
jdoin |
5430d 05h |
/spi_master_slave/trunk/ |
| 16 |
Master: v1.15.0136 [JD] Fixed assertions (PREFETCH >= 1) and minor comment bugs.
Slave: v2.02.0121 [JD] Changed minor comment bugs in the combinatorial fsm logic. |
jdoin |
5430d 05h |
/spi_master_slave/trunk/ |
| 15 |
Updated manual text. |
jdoin |
5431d 10h |
/spi_master_slave/trunk/ |
| 14 |
Updated specifications manual, deleted old documentation stuff, changed minor text errors in the code. |
jdoin |
5432d 09h |
/spi_master_slave/trunk/ |
| 13 |
spi_slave.vhd: v2.02.0120
spi_master.vhd: v1.15.0135
Several bugs fixed. Master and Slave cores tested at all spi modes, at 50MHz SCK, including continuous transfers. |
jdoin |
5433d 05h |
/spi_master_slave/trunk/ |
| 12 |
SPI_SLAVE: v2.00.0110 [JD] FIX: CPHA bugs:
-- - redesigned core clocking to address all CPOL and CPHA configurations.
-- - added CHANGE_EDGE to the FSM register transfer logic, to have MISO change at opposite
-- clock phases from SHIFT_EDGE.
-- Removed global signal setting at the FSM, implementing exhaustive explicit signal attributions
-- for each state, to avoid reported inference problems in some synthesis engines.
-- Streamlined port names and indentation blocks. |
jdoin |
5437d 05h |
/spi_master_slave/trunk/ |
| 11 |
v1.12.0105: Modified SCK output circuit in spi_master.vhd.
In CPHA='0', top speed is +50MHz, in CPHA='1', top speed is 25MHz. |
jdoin |
5448d 04h |
/spi_master_slave/trunk/ |
| 10 |
v1.11.0080: Changed sampling of MISO in spi_master.vhd (removed the input register).
Verified master+slave cores in silicon on a Spartan-6 FPGA at 100MHz, using Xilinx ISE 13.1 and a Digilent Atlys board. Project is included in trunk/syn/spi_master_atlys.xise. |
jdoin |
5449d 05h |
/spi_master_slave/trunk/ |
| 9 |
Updated verification data. |
jdoin |
5452d 17h |
/spi_master_slave/trunk/ |
| 8 |
Updated Documentation |
jdoin |
5452d 17h |
/spi_master_slave/trunk/ |
| 7 |
Updated code comments in VHDL files, added readme.txt files, updated work-in-progress version of the .doc core specification manual. |
jdoin |
5453d 07h |
/spi_master_slave/trunk/ |
| 6 |
v1.10.0075: Changed clocking to use a single high-speed clock for the whole core, using clock enables to control slower timing.
Added SPI line clock divider from high-speed system clock.
Added pipeline delay logic to sync phase of SCK and MOSI, enabling very high operating frequencies.
Verified in silicon for SCK and MOSI at 50MHz, with very robust operation. |
jdoin |
5455d 04h |
/spi_master_slave/trunk/ |
