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foss-eda-tools / third_party / shuttle / sky130 / mpw-001 / slot-015 / 4f756166db998be011dcc318fd9fe8cf257d2160
commit4f756166db998be011dcc318fd9fe8cf257d2160[log] [tgz]
authorMohamed Shalan <mshalan@aucegypt.edu>Wed Nov 18 15:25:22 2020 +0200
committerGitHub <noreply@github.com>Wed Nov 18 15:25:22 2020 +0200
treecf7933c8873dfd3b9a72735a3d92e982c3171b16
parent312ff95eaf1fe1597875eebaa1bd06c7f6e8a7c6 [diff]
Update README.md
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tree: cf7933c8873dfd3b9a72735a3d92e982c3171b16
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  2. doc/
  3. gds/
  4. lef/
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  6. mag/
  7. openlane/
  8. scripts/
  9. spi/
  10. verilog/
  11. info.yaml
  12. LICENSE
  13. Makefile
  14. README.md
README.md

CIIC Harness

A template SoC for Google SKY130 free shuttles. It is still WIP. The current SoC architecture is given below.

Managment SoC

The managment SoC runs firmware that can be used to:

  • Configure Mega Project I/O pads
  • Observe and control Mega Project signals (through on-chip logic analyzer probes)
  • Control the Mega Project power supply

The memory map of the management SoC can be found here

Mega Project Area

This is the user space. It has limited silicon area (TBD, about 3.1mm x 3.8mm) as well as a fixed number of I/O pads (37) and power pads (10). See the Caravel premliminary datasheet for details. The repository contains a sample mega project that contains a binary 32-bit up counter.

The firmware running on the Management Area SoC, configures the I/O pads used by the counter and uses the logic probes to observe/control the counter. Three firmware examples are provided:

  1. Configure the Mega Project I/O pads as o/p. Observe the counter value in the testbench: IO_Ports Test.
  2. Configure the Mega Project I/O pads as o/p. Use the Chip LA to load the counter and observe the o/p till it reaches 500: LA_Test1.
  3. Configure the Mega Project I/O pads as o/p. Use the Chip LA to control the clock source and reset signals and observe the counter value for five clock cylcles: LA_Test2.