Commit Graph

83 Commits

Author SHA1 Message Date
7bbaa24233 hardware: update name of SPI Flash
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:36:52 +08:00
4fe5f8f629 hardware: sch: use raspberry pi header, rework signaling
Rework the signaling to send everything to a Raspberry Pi header.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:36:01 +08:00
eb93c70f01 hardware: sch: restructure SPI Flash symbol
It's much cleaner if we put power pins on one side and signal pins on
the other.  This removes the ratsnest that was building up.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:35:19 +08:00
d99d091d95 pcb: schematic-cache: add Raspberry Pi, new SPI Flash
This reworks the SPI Flash layout and adds the Raspberry Pi header.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:34:33 +08:00
6283435874 reference: evt1: publish final-final-final schematic
It's final this time!  I mean it!

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:33:49 +08:00
b7bcfc595b reference: update evt1 schematic pdf
This adds the `SPI Header`.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 23:47:17 +08:00
0973972464 hardware: pcb: add SPI debug header
This will be used to program SPI during board bringup.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 22:28:08 +08:00
9cb4ba9a3d reference: regenerate evt1 pdf
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:21:59 +08:00
78bb283bc6 hardware: sch: populate SPI, /RESET pullups
It turns out these resistors are important.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:21:01 +08:00
ddb9948232 reference: add another fpga doc, xtal doc
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:16:30 +08:00
0c017aeb96 reference: update evt1 schematic
This schematic reflects more options, including two crystals now and
more decoupling capacitors.

It also adds an option to power VCCPLL from a second 1.2V regulator.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:15:28 +08:00
f06ef4a7d5 hardware: sch: add crystal, VCCPLL regulator
Add a crystal, so we can test to make sure it works.

Also add a second regulator dedicated to VCCPLL in an effort to
cost-down the capacitor and large components that shouldn't be
necessary.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:14:33 +08:00
76f7bf2548 pcb: sch: make ICE40 VCCPLL a power input
For some reason, this pin was listed as a `power output`, which does not
appear to be the case.  Due to this error, the DRC would fail when using
a regulator directly connected to the pin.

Mark this pin as a `power input` to fix this, since it's really where
power goes into the chip.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 19:13:32 +08:00
ab18c90450 hardware: sch: specify spinor part
SPINOR parts are largely interchangeable.  Pick one.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:09:11 +08:00
fd421b88ba reference: re-re-export plot file
The numbering may have changed things.  Maybe.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:07:19 +08:00
c7bfc248af pcb: sch: renumber schematic
Renumber the schematic again, as things have shifted around a bit.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:06:04 +08:00
ab33b4a0a1 hardware: rename tomu-fpga to pcb
This more closely reflects what it actually is.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:05:02 +08:00
6136a66e8e reference: evt1: minor reworking of label positions
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:03:15 +08:00
b940b19cc6 reference: add datasheet for mems oscillator
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 17:02:41 +08:00
3e009d6f8b hardware: pcb: add manufacturer and part numbers
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:57:17 +08:00
72df05fe68 README: convert from asciidoc to markdown
The link mechanism for asciidoc is weird, and isn't working right now.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:40:21 +08:00
d256c39c83 LICENSE: add BSD 3-clause license
It doesn't really make sense for PCBs, which will end up licensed under
a different scheme, but it will work for the source code that will end
up here.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:08:52 +08:00
270d90a21d README: add file
Add a simple README file describing the project.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:08:23 +08:00
bd65526f52 hardware: rename directory from pcb
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:08:06 +08:00
8a38ba4791 gitignore: ignore bak, bck, sym-lib-table
Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:06:28 +08:00
a61337a472 pcb: sch: add tomu-fpga-cache.lib
This file appears to be a local version of the schematic symbols used in
the .sch file, so add it.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:05:08 +08:00
8476a9b7f8 pcb: add tomu-fpga project file
This has changed slightly, so add the updated version.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:04:36 +08:00
177fe7196f reference: evt1: add schematic
Add a schematic for EVT1, based on the most recent design.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:03:48 +08:00
7c83be8dd9 pcb: sch: finish evt1 schematic
This should be a feature-complete schematic.  Now to start on PCB
layout.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:02:55 +08:00
2cd2b204c2 reference: add more ICE40 documentation
Add more reference docs for ICE40 parts.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 16:02:06 +08:00
b5152b0628 pcb: sch: initial beta draft
This is the first feature-complete version of the schematic.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 13:25:22 +08:00
0213e5d7f7 reference: initial commit
Add an initial commit of reference documentation.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 12:36:55 +08:00
7f378b02c0 initial commit
Add work-in-progress files for Tomu ICE40 FPGA.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-30 12:36:17 +08:00