xobs/tomu-fpga
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

hardware: evt1a: work-in-progress charactarization

Browse Source 
Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2018-11-23 11:40:31 +08:00
parent d61d45f516
commit fbd26383f8
1 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
hardware/EVT1a.md
View File

@ -10,21 +10,23 @@ USB Pullup
USB Pad Polarity USB Pad Polarity
Captouch Pads Captouch Pads
Capacitance Capacitance
Reset Button Reset Button | Pass |
User buttons User buttons | Pass | Partially pressing on the button gives a partial response. Why is that?
For Raspberry Pi as clock source, use PLLD with I=28,F=1675 or PLLC with I=56,F=3351. For Raspberry Pi as clock source, use PLLD with I=28,F=1675 or PLLC with I=56,F=3351.
GPIO pinouts: GPIO pinouts:
17 (11): C_DONE BCM | Header | Signal
27 (13): C_RESET ====+========+=========
24 (18): SPI_IO2/WP 17 | 11 | C_DONE
-- (19): SPI_MOSI 27 | 13 | C_RESET
-- (21): SPI_MISO 24 | 18 | SPI_IO2/WP
25 (22): SPI_IO3/HOLD 10 | 19 | SPI_MOSI
(23): SPI_CLK 9 | 21 | SPI_MISO
(24): SPI_CS 25 | 22 | SPI_IO3/HOLD
11 | 23 | SPI_CLK
8 | 24 | SPI_CS
# Put the SPI flash in "HOLD" mode, so it ignores us. # Put the SPI flash in "HOLD" mode, so it ignores us.
gpio -g mode 25 out gpio -g mode 25 out