Talk:Notes on using the OLPC developer boards: Difference between revisions

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* '''Just because it doesn't say it's changing, doesn't mean that it won't change!'''
* '''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 confuse J1 with CN9! You will fry the audio!
* Do NOT populate both L36 and L37! (see CN23 PS/2 connector).

===Back of board===
===Back of board===
* CN1: JTAG Connector for Marvell wireless chip.
* CN1: JTAG Connector for Marvell wireless chip.

Revision as of 00:28, 3 July 2006

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

  • 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. Do not populate both!
  • 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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