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foss-eda-tools / third_party / shuttle / sky130 / mpw-001 / slot-016 / 251e0dfa4145a7f77ed08eafcd106ab9af43b411
commit251e0dfa4145a7f77ed08eafcd106ab9af43b411[log] [tgz]
authorTim Edwards <tim@opencircuitdesign.com>Mon Oct 05 11:02:12 2020 -0400
committerTim Edwards <tim@opencircuitdesign.com>Mon Oct 05 11:02:12 2020 -0400
tree0e679e209b68c3bc5b5d498b9b293df45a7130f3
parent44bab477f9cce5e8229fbd63a16ad84b57663938 [diff]
Serial chain loading of the I/O configurations is now working.
6 files changed
tree: 0e679e209b68c3bc5b5d498b9b293df45a7130f3
  1. doc/
  2. verilog/
  3. README.md
README.md

CIIC Harness (Phase 1)

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 taht 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 is given below

Mega Project Area

This is the user space. It has limitted silicon area (???) as well as a fixed number of I/O pads (???). The repoo 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.