c543591bae
releases: tag dvt1b
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-30 11:05:42 -05:00
ef4835fc41
hardware: pcb: minor modifications, update footprints
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-30 11:04:23 -05:00
97ccf7a350
hardware: footprint: make "nothing" through-hole
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By making it through-hole, it won't show up in the pick-and-place file,
but it will show up in the BOM list.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-30 10:49:00 -05:00
5e1c24ac93
hardware: footprints: fix smd/virtual designation
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-30 10:27:13 -05:00
0a7b84d1c3
hardware: replace VCCPLL regulator with RC network
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Having a full regulator on VCCPLL causes the ESD network in the ICE40 to
freak out, dumping VCCPLL into GND and trying very hard to burn out the
regulator.
Replace it with a simple RC filter network, which is less clean but
results in a happier ESD network.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-25 04:08:23 +08:00
f3543e6e03
reference: add 12V ESD reference
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-21 13:48:20 +08:00
a4f319a951
hardware: pcb: change gerber attributes flag
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This should be disabled, for maximum compatibility.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-21 00:01:33 +08:00
83ec9a94ea
hardware: releases: re-release dvt1a
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Some duplicate files made it in, which were not very useful.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:50:53 +08:00
a4cd7e7083
hardware: cache: commit new cache of symbols
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Kicad regenerates this file based on what library symbols it uses.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:42:31 +08:00
e2a39f508d
hardware: pcb: redo xtal footprint, 12V diode
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Redo the xtal footprint, which was just flat out wrong.
Also, replace the +5V TVS diode with one that can handle more than 5V,
so it's not always shorting out.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:41:47 +08:00
66d1048242
hardware: schematic: modify USB 5V TVS
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Previously, we would end up shorting power to ground all the time
because the diodes were right on the marginal edge.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:41:13 +08:00
00a305110f
hardware: releases: re-release dvt1a
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The previous version was very broken. This also redoes some Gerber
files so that maybe they can be opened by the factory?
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:40:17 +08:00
e535c2fa15
hardware: footprint: add footprint for 11V TVS diode
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 23:39:48 +08:00
6ccdc4e386
hardware: footprints: fix XTAL footprint
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The previous footprint was super super broken.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-20 22:56:38 +08:00
57c0ad62b1
reference: add pdf, jpg for dvt1a
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 16:03:41 +08:00
1468255a55
reference: add extra spi flash documents
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Add reference manual for the alternate spi flash chip.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 15:57:55 +08:00
6959515e79
hardware: release: re-release dvt1a
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This tunes the differential pair.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 15:57:25 +08:00
fcbb4420d3
hardware: pcb: re-tune differential pair
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 15:56:29 +08:00
d5b7701bc7
hardware: releases: re-release dvt1a
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This adds a keepout area around the ground plane underneath the IC, to
try and prevent it from migrating during reflow.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 15:52:35 +08:00
1af0d1c06e
hardware: pcb: increase under-fpga keepout area size
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Increase the size of the keepout area in order to remove some extra
copper that was appearing around one of the ground pads.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 15:51:40 +08:00
4da7854799
dvt1a: tag release
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 14:48:26 +08:00
a3621766c5
hardware: cache: commit kicad's line-ending changes
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I really don't know why it keeps doing this...
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 14:47:27 +08:00
5d90502947
pcb: fix up assembly notes layers
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Resize the assembly note layers so that it's usable (in theory).
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-18 14:46:44 +08:00
7a4497b0c9
hardware: pcb: connect usb esd diodes inline first
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Move the USB ESD diodes so they connect first.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-17 17:58:54 +08:00
3e72bd1086
hardware: sch: add column for "DNP"
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After discussing with one factory, this is their preferred method of
indicating a part is "Do-Not-Populate".
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-17 15:19:17 +08:00
28aae5e4a8
hardware: footprints: 8-uson: redo footprint from pdf
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Redo the footprint for the SPI flash chip from a recommended footprint
provided by one of the vendors.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-17 15:18:25 +08:00
64020199e8
hardware: cache: commit kicad's line-ending change
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Why does it do this? No one can say.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 21:45:25 +08:00
5a074ea4e1
hardware: pcb: finish routing with esd diodes
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Finish routing the PCB with the esd diodes in place.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 21:44:49 +08:00
6344d45c1b
hardware: sch: define spi part numbers for dvt board
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This part is smaller. Define both the part number and an alternative
part number.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 21:44:12 +08:00
8b7adafd9d
hardware: pcb: finish first draft of esd routing
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 16:44:52 +08:00
42b7a235c6
reference: add esd, and security pdf
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 16:44:43 +08:00
f7cd16496c
hardware: footprint: add footprint for esd diode
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 16:44:17 +08:00
dcc33ac81b
hardware: pcb: partial routing of new esd diodes
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There's still a bit more to go...
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 12:49:25 +08:00
9ec87cb483
hardware: sch: add esd diodes
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These will be placed on the USB lines as well as the captouch lines.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 12:49:05 +08:00
d0bd902112
hardware: lib: update cache file
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 12:48:37 +08:00
9abd177b38
hardware: sch: remove "-rescue" and "-tomu-fpga"
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Somehow, KiCad added these strings to the parts libraries, which
resulted in referencing a file that didn't exist.
Remove them.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-16 10:25:05 +08:00
cc19668309
hardware: pcb: reduce the number of capacitors
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This is an initial commit removing the excess capacitors.
We will eventually add ESD protection ICs in the space that has been
freed up.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 19:24:55 +08:00
a98cd5727e
hardware: sch: remove excess decoupling caps
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We probably don't need 10nF, because this won't do any very-high-speed
(>100 MHz) operations. We can think about putting them back in later,
space permitting.
Additionally, remove an extra bank of caps for one of the IO pads.
We'll double-up on capacitors there, which should be alright given the
close proximity and the fact that the only thing on that IO bank is
captouch.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 19:23:05 +08:00
23106ab57d
hardware: pcb: reduce ground fill, loosen up routing
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Reduce the ground fill under the IC, to prevent it from sliding around.
This gives less copper, but it should be fine for the currents we're
drawing.
Loosen up the routing of the 5V plane, which involves moving some
components around. This increases the amount of copper that goes to the
various regulators.
Finally, reorder the caps so that the larger ones are further from the
IC. This is done because they have a slower response time, and so can
be further away.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 19:14:24 +08:00
22aa8c8aca
hardware: pcb: hide usb footprint silk
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 14:49:14 +08:00
b151d005f2
hardware: pcb: update PCB to use local copies of 3D files
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 14:46:54 +08:00
06be1fdb35
hardware: footprint: add models for regulator, BGA
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-15 14:46:23 +08:00
ccb5f49d19
reference: dvt1: re-render images
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-09 18:23:35 +08:00
571646f5c1
hardware: pcb: more tuning of traces and pours
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Open up some more pours, and move some vias to make pours larger.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-09 18:21:39 +08:00
bdf8b8558d
hardware: pcb: remove text leftover from EFM32
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This was used to select which ARM MCU to use. It is no longer relevant.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-09 16:45:06 +08:00
77d47db980
hardware: sch: add some spice models to passives
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Identify passives and implement the various spice models.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-08 21:43:32 +08:00
294ecfe782
hardware: pcb: add more copper to 1.2V line
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-08 19:11:24 +08:00
8050e796ab
hardware: pcb: clean up traces, widen up pours
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Rework the traces somewhat to widen up the pours and remove some of the
bifurcation that's going on.
Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-08 19:07:56 +08:00
9813a20efb
reference: add screenshot and schematic for dvt1
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-07 21:47:57 +08:00
c2566ea16d
hardware: pcb: add version and update silkscreen
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Signed-off-by: Sean Cross <sean@xobs.io>
2018-11-07 21:47:16 +08:00
