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foss-eda-tools / third_party / shuttle / gf180mcu / mpw-000 / slot-001 / 42b7c844d22f52b97b4c6c62b501acef09739dc0
commit42b7c844d22f52b97b4c6c62b501acef09739dc0[log] [tgz]
authorGreg Davill <greg.davill@gmail.com>Mon Dec 05 00:56:32 2022 +1030
committerGreg Davill <greg.davill@gmail.com>Mon Dec 05 00:58:33 2022 +1030
tree45f5425cfbb1eb2ce70fec188e52dfa2692d0215
parent33dfe5c116d7b01cea0c5ece22e5bde5abcc7324 [diff]
rtl: Add extra serv instance
8 files changed
tree: 45f5425cfbb1eb2ce70fec188e52dfa2692d0215
  1. .github/
  2. def/
  3. docs/
  4. gds/
  5. lef/
  6. mag/
  7. maglef/
  8. openlane/
  9. scripts/
  10. sdc/
  11. sdf/
  12. signoff/
  13. spef/
  14. spi/
  15. verilog/
  16. .gitignore
  17. .gitmodules
  18. info.yaml
  19. LICENSE
  20. Makefile
  21. README.md
README.md

GF180 MPW0 Serv

An award winning CPU design fit into the GF180 MPW0 Shuttle.

To keep the design simple this project places a Serv CPU with a scan-chain around it connecting it's wishbone bus which is a combination of data and instructions out via I/O pins.

Another I/O pin is responsible for handling clock and reset. Operation will run as follows:

  1. Using an external controller, load in default values for the wishbone bus, bring serv out of reset and clock it.
  2. Latch in and scan out the wishbone bus values. Handle any requests.
  3. Scan in data from the request and clock serv.
  4. Goto 2.

In this manner we should be able to implement external peripherals like UARTs, timers, and GPIOs. The external controller can be a microcontroller, FPGA, or the caravel harness SoC.