4a9b8c372b
schematics: HEAC capacitors to protect return of 5V from monitor to FPGA
7 years ago
8ff6e0e20e
schematics update, setting L1,L2,L3 all the same PN
7 years ago
42e3255b7a
schematics: US2 diodes pull up/down 1.5k/15k
7 years ago
16fedcac96
schematics: additional 2 lines for US2 (GP,GN 22,25 moved)
7 years ago
d95e2eab3d
schematics: 3 decoupling 22nF capacitors for SDRAM
7 years ago
2f3cc59274
schematics: adding mouser P/N
7 years ago
b205d52f4f
schematics: sprinkling 22nF decoupling capacitors under FPGA
7 years ago
a04b74cc61
schematics, footprints: micro usb cleanup
7 years ago
965d04d7d5
schematics: WIFI LED on GPIO5, route WIFI_GPIO5 and WIFI_GPIO17 to FPGA
7 years ago
7caf7a4f5f
schematics: v1.7.9 SD card hopfully connected properly to ESP32 SD_MMC
7 years ago
e81d05b68d
schematics: renaming pins J..+- to GP,GN..
7 years ago
e91a42eb58
schematics: connecting usbserial chip directly to usb 5V,
...
in order that rest of board circuitry can be powered independently
from usbserial chip.
7 years ago
5b7c755ee1
schematics: flip audio 0-3
7 years ago
b41c200d79
schematics: cosmetics, hidign some button datasheet URL for schematics
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
7cebd0afa5
changing DAC resistors 100-820 ohm -> 150-1200 ohm
...
few 220 ohm resistors changed to 150 ohm to simplify BOM
7 years ago
8e94190676
power up note and small cosmetics
7 years ago
050a70079a
move one audio-v pin from bank0 to bank7 so
...
now all audio jack pins are on bank7
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
6d74bb29fc
PCB v1.7 fix wrong audio jack connection
7 years ago
ba4c8e8d22
PCB v1.6 SDRAM fully reworked
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
e4fc99887e
moving GND and VCC on schematics symbols to
...
common locations for planned PCB which
supports upgrade path for example
12F->25F->45F->85F and if possible ECP5U->ECP5UM
7 years ago
1cdad1e4d0
all diodes SOD-323 and SOD-323F packages changed to handsoldering
...
(bigger pads, more reworkable)
silkscreen moving references GPDI1 and SW1 for readability
7 years ago
bc4b88ee58
Micro SD: using SCHD3A0100
7 years ago
f3d84dbfdc
LED D19 was oriented wrong, now correct
7 years ago
f8b5dc97eb
update SD card power supply and gerbers
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
f120d212d9
433 MHz onboard antenna (need to uncover copper infill layers)
7 years ago
0229a768ad
FPGA direct-to-pin Hackish USB transciver 27 ohm + 3.6 V zener
7 years ago
236f63488a
DIP SWITCH routed
7 years ago
37bb008e24
ADC connecting REF+/REF- and SPI
7 years ago
2ca8acc32d
ADC chip moved on top layer.
...
Connecting 8 analog lines to J2
and remaining VCC/GND
7 years ago
32836831ae
i2c of RTC connected to GPDI i2c
7 years ago
ee20b46f6d
connecting ADC substrate pad to GND
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
be09416928
Add 27 ohm resistors in series with FTDI USB and readme update
8 years ago
81b3ea5da0
adding minimal set of 3 2.2uF capacitor for 1.2V, 2.5V and 3.3V
8 years ago
ee7d266543
Resistors for LEDs
8 years ago
18aef04f2c
JTAG header
8 years ago
b7500cc477
increasing thickness of power traces, moving clock
...
to a bank which is always at 3.3V
8 years ago
23b588ff16
Routing... 4 routes remaining
8 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
8 years ago
ec42a18d26
reordering RAM connections to use peripheral pins near SDRAM chip
8 years ago
d6fd30e59c
jumper to disable wifi module
8 years ago
9570c1137b
small edits
8 years ago
davor