Commit Graph

21 Commits

Author SHA1 Message Date
c9d52e9802 hardware: sch: re-number DBG pins to be consecutive
Since there are only 6 pins, it doesn't make sense to have numbers such
as "DBG_10" and "DBG_9" anymore.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-23 16:13:29 +08:00
f318629747 hardware: sch: update designation to EVT2
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-23 15:59:28 +08:00
9e6faf4456 sch: mark VCCPLL regulator as DNP, use filter circuit
The VCCPLL line is extraordinarily sensitive to voltage rise times, and
appears to cause the FPGA to go into latchup very very easily.

As a result, the VCCPLL regulator burns all 250 mA of its budget
constantly, as the FPGA shunts VCCPLL to GND.  This would be ideal
during an ESD event, but not ideal during normal operations.

Indicate the VCCPLL Regulator approach is DNP, and that the VCCPLL
Filter Network is preferred.  Mostly because the regulator doesn't work
at all.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-23 15:56:35 +08:00
6a392e57d2 pcb: rework pcb with correct footprints, add tvs diodes
Add TVS diodes, so we make sure they work.

Also, rework the PCB so that the clock actually functions now.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 22:51:43 +08:00
a4fdc6365d hardware: sch: use local copy of 20pin header
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-13 10:41:16 +08:00
ac7446dc12 hardware: sch: change "value" for user switches
Change the "Value" of the user switch from "USER1" and "USER2" to "5"
and "6".  This way we can use the "Value" as the silk rather than adding
another text layer.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-10 12:11:11 +08:00
da8ede5f75 hardware: fix USB footprint being mirrored
That could have been bad.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-02 20:38:34 +08:00
8bb0524872 hardware: sch: provide APN for RGB LED
Provide an alternate part number for the RGB LED, since the current one
is hard to source.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-02 19:48:25 +08:00
c02b3ef4ac hardware: sch: add PMOD connector
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-02 11:37:40 +08:00
b26b71343d hardware: first fully-routed PCB
The PCB is terrible, and probably would have all sorts of issues.  Will
rip it up and try again tomorrow.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 22:28:10 +08:00
1acf50df39 hardware: sch: use footprints from tomu-fpga
Use our local copy of footprints, which are guaranteed not to change
between Kicad versions.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 16:03:06 +08:00
061b2c81a7 hardware: sch: map remaining footprints
Add footprints for the remaining schematic components.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 12:57:33 +08:00
a715f5c728 hardware: add testpoints for SPI programming
This will become necessary when doing factory burning.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:54:13 +08:00
30b7610996 pcb: hook up more debug wires
We have spare pins, so run more debug wires.

Many of these will probably get cut when doing the PCB layout.

Signed-off-by: Sean Cross <sean@xobs.io>
2018-10-31 10:45:27 +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
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
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
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
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
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