987aefa1fd
schematics: routing FPGA to SPI QUAD.
...
BTN_R,U connected to BANK2,3 on "ram" sheet
7 years ago
e81d05b68d
schematics: renaming pins J..+- to GP,GN..
7 years ago
6228263ac6
schematics: additional diode R23 to make shutdown more reliable
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reduce hold resistor, use schottky for nSLEEP
7 years ago
f5de9a85ed
schematics: connecting SHUTDOWN to FPGA
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
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150-mil SOIC-8 packages to fit one board.
FLASH increased 16->32Mb
7 years ago
aeb14da29b
schematics: using SOA008 and adding datasheet url to FTDI usbserial
7 years ago
3915779e0c
schematics: part numbers and URLs of datasheets and manufacturers
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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
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schem symbol 45F fixed typo T8->T7 (GND) and SERDES
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)
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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
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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
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(bigger pads, more reworkable)
silkscreen moving references GPDI1 and SW1 for readability
7 years ago
bc4b88ee58
Micro SD: using SCHD3A0100
7 years ago
c42c90ae37
FPGA_DONE connected to ESP32 over a resistors,
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Other resistors moved away to allow routing thru the mess.
ESP-32 connected missing GND pin
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
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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.
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Connecting 8 analog lines to J2
and remaining VCC/GND
7 years ago
2153a220a0
schematic symbol for ADC MAX11123
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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
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to a bank which is always at 3.3V
8 years ago
dbf4b92a22
audio DAC routed
8 years ago
23b588ff16
Routing... 4 routes remaining
8 years ago
108abc3158
connecting 3.3V and 1.2V
8 years ago
1e5e0b01a6
connecting JTAG lines to FTDI serial lines RI DCD CTS DSR
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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
3446afcc08
optimizing PCB component placement
...
and audio bit ordering
8 years ago
39dce76f0a
use new schem symbol
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
c297a5294f
adding 25 MHz oscillator and moving some parts around
8 years ago
12e89e677a
connecting wifi, usbserial, oled, sd card
8 years ago
a477fbd050
connecting flash config chip
8 years ago
dc1ae11172
partially routed board using "freeroute" autorouter
8 years ago
85cb0b3f93
Placing 40-pin connectors side-by-side,
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changing ft2232 to ft231x
8 years ago
a7de1a4e58
power button
8 years ago
4f3fabdb5f
oled updated on the schematic and PCB
8 years ago
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