Talk:Notes on using the OLPC developer boards: Difference between revisions
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JordanCrouse (talk | contribs) (Fixed) |
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Connector/LED documentation moved to main article. |
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Could somebody complete this (CN10, CN13, CN18 |
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---- |
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'''Connectors/LEDs''' |
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''''Back of board'''' |
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Start top left corner, allocated in scanline fashion. |
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* CN1: JTAG Connector for Marvell wireless chip. |
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* CN2: Old LCD Connector. Definition changing. |
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* CN3: External stereo audio line output (switched) |
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* CN4: USB |
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* CN5: External mono microphone connector (switched) |
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* CN6: USB |
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* CN7: USB |
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* CN8: Mono right side speaker connector |
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* CN9: Internal stereo speaker connector |
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* CN10: ?where is it? does it even exist? |
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* CN11: DC input jack (10V-24V; nominal 12V) |
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* CON1: Unused large solder pads (was mini-PCI on pre-A-Test boards) |
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* D2: LED. Definition changing. Same output as D22 (front/back view). |
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* D3: LED. Definition changing. Same output as D21 (front/back view). |
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* D4: LED. Definition changing. Same output as D23 (front/back view). |
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Excuse my ignorance, but what exactly <em>is</em> "canning" in the context of wireless hardware? I'm not completely foreign to electronics and associated jargons, but being involved with OLCP is the first time I've heard the term used in such a context. |
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''''Front of board'''' |
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--[[User:Yangman|Yangman]] 14:56, 5 July 2006 (EDT) |
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* CN12: CRT |
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* CON_ANT1: U.FL connector for left? antenna |
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* CON_ANT2: U.FL connector for right? antenna |
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* CN13: (opposite side of CN14?) |
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* CN14: Used for DCON Debugging. Definition changing. |
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* CN15: Internal microphone connector |
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* CN16: AMD Geode JTAG Connector |
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* CN17: Used for DCON Debugging. Definition changing. |
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* CN18: CRT/LCD Jumper - (1/3=CRT 2/4=LCD confirmation needed) |
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* CN19: Unused |
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* CN20: Used for manufacturing (serial Flash programming) |
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* CN21: Battery connector (Pin 1: Gnd, 2: VBat) |
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* CN22: Battery sensor. Definition changing. |
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* 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 [3.3V or 5V]) |
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* D21: LED. Definition changing. Same output as D3 (front/back view). |
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* D22: LED. Definition changing. Same output as D2 (front/back view). |
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* D23: LED. Definition changing. Same output as D4 (front/back view). |
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* J1: Serial port connector. 3.3V levels. (Pin 1: 3.3V Power, 2: TxD, 3: RxD, 4: Gnd) Located between the wireless and the ENE chip. WARNING! Do not confuse with CN9! |
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Canning is RF encapsulation. It means putting a shield around the RF (radio frequency) components. You'll see on the board a copper border around the wireless space. A metal shield, in the form of a box with one side missing, is placed over this area, and soldered down. An RF shield decreases noise received, decreases noise emitted, and therefore increases range of the wireless circuit and antenna. It also helps the device to meet electromagnetic compatibility regulations, or other regulations concerning radios. |
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'''NOTE: Just because it doesn't say it's changing above, doesn't mean that it won't change!''' |
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--[[User:Quozl|Quozl]] 19:33, 5 July 2006 (EDT) |
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Ah, so it literally is canning, like I suspected, and not some jargon. Thanks. |
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--[[User:Yangman|Yangman]] 01:58, 6 July 2006 (EDT) |
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== Please fix the LinuxBIOS discussion in this page == |
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Please fix the LinuxBIOS discussion which is out of date. |
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: Done - thanks. - [[User:JordanCrouse|JordanCrouse]] ([[User talk:JordanCrouse|Talk to me!]]) 12:32, 14 September 2006 (EDT) |
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Latest revision as of 16:32, 14 September 2006
Connector/LED documentation moved to main article.
Excuse my ignorance, but what exactly is "canning" in the context of wireless hardware? I'm not completely foreign to electronics and associated jargons, but being involved with OLCP is the first time I've heard the term used in such a context. --Yangman 14:56, 5 July 2006 (EDT)
Canning is RF encapsulation. It means putting a shield around the RF (radio frequency) components. You'll see on the board a copper border around the wireless space. A metal shield, in the form of a box with one side missing, is placed over this area, and soldered down. An RF shield decreases noise received, decreases noise emitted, and therefore increases range of the wireless circuit and antenna. It also helps the device to meet electromagnetic compatibility regulations, or other regulations concerning radios. --Quozl 19:33, 5 July 2006 (EDT)
Ah, so it literally is canning, like I suspected, and not some jargon. Thanks. --Yangman 01:58, 6 July 2006 (EDT)
Please fix the LinuxBIOS discussion in this page
Please fix the LinuxBIOS discussion which is out of date.
- Done - thanks. - JordanCrouse (Talk to me!) 12:32, 14 September 2006 (EDT)