Talk:Notes on using the OLPC developer boards

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Revision as of 20:39, 2 July 2006 by 24.85.139.202 (talk) (Convert back to table)
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Could somebody complete this (CN10, CN13, CN18, CN21, CN23 need info/confirmation), and move it to the main page? All questions are in italics. Pinout is wanted on a few connectors.

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

  • CN12: CRT for developer boards only
  • CON_ANT1: U.FL connector for left? antenna
  • CON_ANT2: U.FL connector for right? antenna
  • 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).
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