c87e9f6c4c
schematics: renumbering dipswitch pins to match writing on the
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part, pins 1-4 from left to right
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
186eabc54c
WIFI VSPI schematic connected to JTAG for possible acceleration
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
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few 220 ohm resistors changed to 150 ohm to simplify BOM
7 years ago
ba4c8e8d22
PCB v1.6 SDRAM fully reworked
7 years ago
eca6978391
HDMI fixed wrong wiring PCB v1.5
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and improving copper fill areas
7 years ago
af531b0fd5
LED values renamed to RED and GREEN
7 years ago
bc41b3052d
move WIFI disable jumper closer to BTN1
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
07de158d38
R56 for FT231X rev A,B,C workaround from TN140_FT231X Errata
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
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power supply to form PI-filter with another 2.2uF near BGA
7 years ago
f32ace3adf
D15 schottky diode BAT54W package SOD323F
7 years ago
d0cf4eaeaf
DIP switch correct footprint
7 years ago
fdf38ad9a1
DIP switch moved to the right, near RAM.
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Maybe should be moved more to the right not to overlap with OLED
7 years ago
236f63488a
DIP SWITCH routed
7 years ago
6d14ed8ff0
Placing DIP switch, but not yet connecting it to FPGA
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
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
238ad770ce
moving USB LEDs on TOP layer
8 years ago
23b588ff16
Routing... 4 routes remaining
8 years ago
5590ba802d
optimizing routing for SD and FTDI
8 years ago
752eddee0e
J1 routed using only purple plane, (yellow plane made free)
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
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and audio bit ordering
8 years ago
19b884baef
using corrected schem symbol, reordering pins
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
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
c3889467a0
rename gpio pins same as BGA pin e.g. A9, C11, ...
8 years ago
4f3fabdb5f
oled updated on the schematic and PCB
8 years ago
b1062e5795
place oled symbol on 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
f7185a0ff7
improving wifi SD and JTAG pinouts.
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Unsure of JTAG (GPIO20 is NC on ESP-32S module?)
8 years ago
f9ba6fa20b
chage ESP8266-12E to ESP32S
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approximate (maybe incorrect) connections - need review
(programming esp from fpga, jtag, sd, chip enable)
8 years ago
a0dae5bb6a
another diode to duscharge C14 at shutdown
8 years ago
cf01d5cc8d
Power: Replace discharge resistor which leaks with
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a diode for discharge C at shutdown
HDMI pin 0 is now the shield and connected to GND
8 years ago
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