| commit | 581068fea64d0d978f060a259cfbb2756bc88e90 | [log] [tgz] |
|---|---|---|
| author | Tim Edwards <tim@opencircuitdesign.com> | Thu Nov 19 12:45:25 2020 -0500 |
| committer | Tim Edwards <tim@opencircuitdesign.com> | Thu Nov 19 12:45:25 2020 -0500 |
| tree | 3dd85a0d3aa275b8d6dd4c9d828839a8a5eb25ac | |
| parent | 09a7237e644d417d35af7f586a8e90c0ba013794 [diff] |
Corrected the mess caused by introducing default_nettype none into the design verification netlists. Also cleaned up the broken power-on-reset signaling, and added connections from the user space to the I/O pad direct-to-pad analog signal pins.
A template SoC for Google SKY130 free shuttles. It is still WIP. The current SoC architecture is given below.
The managment SoC runs firmware that can be used to:
The memory map of the management SoC can be found here
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: