b006a34b71
schematics: C54 22uF for 3V RTC battery
6 years ago
7b88b3baf1
schematics: v1.8 adding capacitor for 2.5/3.3V
6 years ago
1911c0afe2
schematics: add capacitor near SDRAM
6 years ago
ec8c012ebb
schematics: jumper for selectable 2.5V/3.3V J1 voltage
6 years ago
54dcca20fa
schematics: usb pull pins moved from gpio to gpdi bank
...
gpio is planned to become be voltage changeable 2.5/3.3V
while pulls should go to 3.3V
6 years ago
ea96ac0d18
schematics: use non-handsoldering footprints for all 22nF and 100nF capacitors
6 years ago
4ae602347e
schematics: power decoupling capactor near OLED
6 years ago
2ed35bea1a
schematics: AC coupling all GPDI differential lines
6 years ago
4a9b8c372b
schematics: HEAC capacitors to protect return of 5V from monitor to FPGA
6 years ago
8ff6e0e20e
schematics update, setting L1,L2,L3 all the same PN
6 years ago
42e3255b7a
schematics: US2 diodes pull up/down 1.5k/15k
6 years ago
b535b7ccee
schematics: references for buttons on previous PCB v1.7
6 years ago
16fedcac96
schematics: additional 2 lines for US2 (GP,GN 22,25 moved)
6 years ago
2f3cc59274
schematics: adding mouser P/N
6 years ago
b205d52f4f
schematics: sprinkling 22nF decoupling capacitors under FPGA
6 years ago
a04b74cc61
schematics, footprints: micro usb cleanup
6 years ago
c1053dd7bd
schematics: cleanup of MFG_PN to simplify BOM
6 years ago
6b50f65544
footprints: FPGA renaming Quad SPI lines D2,D3
...
schematics: reference FPGA footprint directly (not from rescue file)
6 years ago
e81d05b68d
schematics: renaming pins J..+- to GP,GN..
6 years ago
0990aa8ac2
schematics: fix shutdown and i2c pullup to 5V D11=LED R4,R25,R26=4.7k
7 years ago
9ab20cb840
specific comments about RC shutdown constant on "power" sheet
7 years ago
766f96a80a
schematics: comments about i2c sharing
7 years ago
b41c200d79
schematics: cosmetics, hidign some button datasheet URL for schematics
7 years ago
ea88fb4ceb
schematics: changed I2C and SPI FLASH part numbers to provide
...
150-mil SOIC-8 packages to fit one board.
FLASH increased 16->32Mb
7 years ago
7aa1854030
schematics: use SOA008 footprint for the SPI flash chip
7 years ago
3915779e0c
schematics: part numbers and URLs of datasheets and manufacturers
...
of most chips and connectors. Small parts not done yet.
7 years ago
52814d6ae0
WIFI LED (blue) on schematics
7 years ago
4a35c95132
GPDI CEC add protection resistor R61 470 ohm
7 years ago
a5a51a8f28
connected missing SD card pins to esp-32
7 years ago
cca17d282d
open-close to check that everything loads fine
7 years ago
35b3a8b3dd
changing to 45F which is production device now
...
schem symbol 45F fixed typo T8->T7 (GND) and SERDES
7 years ago
0d71e508ae
analog: audio ring2 resistor DAC network connected to FPGA
...
copper infill is getting thin, so minimal-thickness traces
are used 0.127 mm
7 years ago
f843d3169a
gpdi sheet, i2c voltage shifter, VREF filtering with C18 100nF->470nF
7 years ago
ba4c8e8d22
PCB v1.6 SDRAM fully reworked
7 years ago
eca6978391
HDMI fixed wrong wiring PCB v1.5
...
and improving copper fill areas
7 years ago
bc41b3052d
move WIFI disable jumper closer to BTN1
7 years ago
1ea88bda53
Adding pins to schematic symbols for all chips in unit "H" (SERDES)
...
Non-serdes chips need GND connection on unit "H".
"power" sheet now connects GND's at unit "H".
7 years ago
bc4b88ee58
Micro SD: using SCHD3A0100
7 years ago
f3d84dbfdc
LED D19 was oriented wrong, now correct
7 years ago
bab7ee607e
placeholder for 1.5k pullup for usb 1.0
7 years ago
9cc436ce8c
Additional VCC 2.2uF blocking capacitors near the switching
...
power supply to form PI-filter with another 2.2uF near BGA
7 years ago
bcf94bafab
buttons footprints correct now
7 years ago
236f63488a
DIP SWITCH routed
7 years ago
2153a220a0
schematic symbol for ADC MAX11123
...
small PCB traces cleanup
ADC chip placed on PCB but connected only to GND
7 years ago
81b3ea5da0
adding minimal set of 3 2.2uF capacitor for 1.2V, 2.5V and 3.3V
7 years ago
ee7d266543
Resistors for LEDs
7 years ago
18aef04f2c
JTAG header
7 years ago
23b588ff16
Routing... 4 routes remaining
7 years ago
1f60f95a71
compatible OLED models: SSD1306 or SSD1331
7 years ago
1e5e0b01a6
connecting JTAG lines to FTDI serial lines RI DCD CTS DSR
...
as those pins are by default inputs and can be reconfigured as outputs
similar but not identical pinout as the one that works from ujprog
CBUS used to force-wakeup of the board from sleep state
2 LEDs to CBUS pins to display usb enumeration and activity status
7 years ago
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