2 layers87.9 × 98.7 mm
Bitdoglab smd
BitDogLab/BitDogLab
Open-source educational hardware for embedded systems, programming, electronics, and physical computing.
138 parts203
2 layers
G2-pico kicad
skmp/g2-pico6can pio haz g2 interface?
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 4
- Nets
- 46
- Pads
- 94
- Tracks, vias
- 191, 8
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 Jan 2024
- Updated
- 16 Jan 2024
Overview
G2-pico kicad is an open-source printed circuit board by skmp, from the skmp/g2-pico repository on GitHub, published under the BSD-3-Clause licence. It is a 2-layer board with 4 parts on 46 nets, routed with 191 tracks and 8 vias.
It is built around the SC0918. Its parts include 1 resistor, 1 connector and 1 switch. It belongs with the interfaces and adapters boards of this library.
Main components
1README
README.mdWIP schematic
Parallel Port Pinout
| pin | name (jj) | name (es) | direction | desc (es) | desc (jj) |
|---|---|---|---|---|---|
| 1 | 5v | ||||
| 2 | 5v | ||||
| 3 | 5v | ||||
| 4 | 5v | ||||
| 5 | /MODEMCS | G2_MDMCSN | Output | Modem chip select | modem enable |
| 6 | /IRQA | G2_IRMDMN | Input | Modem interruption | modem / lan adapter irq |
| 7 | ??? | G2_RQDEVN | Input | Debugger /TransferRequest | |
| 8 | ??? | G2_RQEX1N | Input | External Device1 /TransferRequest | |
| 9 | ??? | G2_RQEX0N | Input | External Device0 /TransferRequest | |
| 10 | gnd | ||||
| 11 | gnd | ||||
| 12 | gnd | ||||
| 13 | /IRQB | G2_IREXTN | Input | External device interrupt | BBA irq |
| 14 | /LBE or /WR | G2_BLN | output | Lowest data(G2_AD[7:0]) valid | lower byte enable or modem write |
| 15 | ??? | G2_STN | Input | /Stop | |
| 16 | /UBE or /RD | G2_BHN | output | Highest data(G2_AD[15:8]) valid | upper byte enable or modem read |
| 17 | 3.3v | ||||
| 18 | 3.3v | ||||
| 19 | 3.3v | ||||
| 20 | /BTB | G2_DSN | In/output | /DeviceSelect | input, access time / burst xfer |
| 21 | /AEN | G2_FRN | output | Frame signal | Address enable / bus cycle start |
| 22 | /BTA | G2_TRN | input | /TargetReady | access time control / burst xfer |
| 23 | gnd | ||||
| 24 | gnd | ||||
| 25-40 | AD[15:0] | G2_AD[15:0] | In/output | Address/data multiplex bus | same |
| 41 | gnd | ||||
| 42 | gnd | ||||
| 43 | CLK | G2_CLK | output | G2bus/clock | system clock |
| 44 | gnd | ||||
| 45 | gnd | ||||
| 46 | /RESET | G_RST | output | reset | system reset |
| 47 | gnd | ||||
| 48 | gnd | ||||
| 49 | ??? | midi_out | |||
| 50 | ??? | midi_in |
Other G2 signals
| Pin | name (es) | direction | desc (es) |
|---|---|---|---|
| ??? | G2_RQAICN | Input | AICA /TransferRequest |
| ??? | G2_IRAICN | Input | AICA interruption |
sources: https://web.archive.org/web/20221206012741/http://jj1odm.qp.land.to/g2bus.php, https://www.dreamcast.es/infusions/forum/viewthread.php?thread_id=21&rowstart=40, https://gamingdoc.org/technical-documentation/consoles/sega-dreamcast/independent/integrated-circuits/holly-graphics-engine/
Parts
4| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | DC_PORT | Connector_PinHeader_2.00mm:PinHeader_2x25_P2.00mm_Vertical_SMD | J1 |
| 1 | DC_PWR | Button_Switch_THT:SW_DIP_SPSTx01_Slide_9.78x4.72mm_W7.62mm_P2.54mm | SW1 |
| 1 | SC0918 | pico_w:MODULE_SC0918 | A1 |
Questions
What parts does the G2-pico kicad use?
4 parts, built around the SC0918. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the G2-pico kicad KiCad files?
From the skmp/g2-pico repository on GitHub, at the commit this page was made from: the board is g2_modem_pcb/g2-pico-kicad.kicad_pcb and its schematic g2_modem_pcb/g2-pico-kicad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the G2-pico kicad design in my own project?
Its repository publishes it under the BSD-3-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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