380fcdf86a
schematic: newly created SOT96-1 used for NXP RTC
7 years ago
e641702054
schematics: start with tape and reel datasheet information
...
(currently done only for RTC)
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
020d7bdfa7
schematics: change core voltage 1.2V->1.1V (RB1 changed 15k->18k)
...
FPGA Chip in ULX3S is LFE5U-45F-6BG381C and it needs 1.1V.
5G chips like LFE5U5G-45F-6BG381C would need 1.2V
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
7cebd0afa5
changing DAC resistors 100-820 ohm -> 150-1200 ohm
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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
6d74bb29fc
PCB v1.7 fix wrong audio jack connection
7 years ago
ba4c8e8d22
PCB v1.6 SDRAM fully reworked
7 years ago
220f575442
schematic "power" sheet and footprint cosmetics
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
fffde2cf88
Additional GND for 85F chips
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
07de158d38
R56 for FT231X rev A,B,C workaround from TN140_FT231X Errata
7 years ago
06a8d751d9
Jumpers (default OFF) for 3 switcher voltages
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
10df092413
using modified ECP5 footprint
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
68a23c127c
set package SOD323 to all small diodes
7 years ago
f32ace3adf
D15 schottky diode BAT54W package SOD323F
7 years ago
bcf94bafab
buttons footprints correct now
7 years ago
32836831ae
i2c of RTC connected to GPDI i2c
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
238ad770ce
moving USB LEDs on TOP layer
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
2a60828a99
schem. pullup 1.5k for USB 1.1 full speed mode
8 years ago
1a122bfc67
fully routed
8 years ago
23b588ff16
Routing... 4 routes remaining
8 years ago
0f9d00f602
Buffer capacitor for SDRAM
8 years ago
108abc3158
connecting 3.3V and 1.2V
8 years ago
dcbfda0556
Run DRC to update cupper fill zones
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
39dce76f0a
use new schem symbol
8 years ago
70fb21781b
reorder GPDI differential pairs for almost straitforward routing
8 years ago
0af487f23c
renaming clocks
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
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
6639abded3
add 4 mounting holes
8 years ago
b661cacede
Change to 2x20 pin headers, PCB layout currently sub-optimal
8 years ago
Emard