Talk:Notes on using the OLPC developer boards
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All remaining questions are in italics. Please remove the question if you answer it!
Connectors/LEDs
- All of these numbers are allocated starting top left corner, allocated in scanline fashion.
- The front of the board is the side with the VGA connector and the Geode processor.
Warnings
- Just because it doesn't say it's changing, doesn't mean that it won't change!
- Do NOT confuse J1 with CN9! You will fry the audio!
- Do NOT populate both L36 and L37! (see CN23 PS/2 connector).
Back of board
| Code | Name | Description and Pinout |
|---|---|---|
| CN1 | JTAG Connector for Marvell wireless chip | |
| CN2 | Old LCD Connector | Definition changing. |
| CN3 | External stereo audio line output (switched) | |
| CN4 | USB | |
| CN5 | External mono microphone connector (switched) | |
| CN6 | USB | |
| CN7 | USB | |
| CN8 | Mono right side speaker connector | (Pin 1: Right +, 2: Right -) |
| CN9 | Internal stereo speaker connector | (Pin 1: Left -, 2: Left +, 3: Right -, 4: Right +) |
| CN10 | No longer exists | (2-pin CN9 and CN10 were combined to 4-pin CN9) |
| CN11 | DC input jack | (10V-24V; nominal 12V) Center positive. |
| CON1 | Unused large solder pads | (was mini-PCI on pre-A-Test boards) |
| D2 | LED. | Definition changing. Same output as D22 (front/back view). |
| D3 | LED. | Definition changing. Same output as D21 (front/back view). |
| D4 | LED. | Definition changing. Same output as D23 (front/back view). |
Front of board
| Code | Name | Description and Pinout |
|---|---|---|
| CN12 | CRT for developer boards only | |
| CON_ANT1 | U.FL connector for left? antenna | confirm left? |
| CON_ANT2 | U.FL connector for right? antenna | confirm right? |
| CN13 | Wireless interface test points. | Definition changing. |
| CN14 | Used for DCON Debugging. | Definition changing. |
| CN15 | Internal microphone connector | (Pin 1: Gnd, 2: Audio) |
| CN16 | AMD Geode JTAG Connector | |
| CN17 | Used for DCON Debugging. | Definition changing. |
| J1 | Serial port connector. | 3.3V levels. (Pin 1: 3.3V Power, 2: TxD, 3: RxD, 4: Gnd) |
| CN18 | CRT/LCD Jumper | 1/3 = CRT, Removed = LCD |
| CN19 | Unused and unsoldered jumper. | |
| CN20 | Used for manufacturing | Serial Flash programming. Requires special fixture. |
| CN21 | Battery connector | (Pin 1: Gnd, 2: VBat). Battery is 5-cell NiMH, nominal ~6.0V. |
| CN22 | Battery sensor. | Definition changing. |
| CN23 | Internal PS/2 Connector to keyboard & input module |
(Pin 1: TP Data, 2: TP Clk, 3: Gnd, 4: KB Data, 5: KB Clk, 6: Power). Power is 5V if L36 populated, 3.3V if L37. L36/L37 located above pin 6. |
| D21 | LED. | Definition changing. Same output as D3 (front/back view). |
| D22 | LED. | Definition changing. Same output as D2 (front/back view). |
| D23 | LED. | Definition changing. Same output as D4 (front/back view). |