Editing Talk:Pinout
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=== Multi-connector assumptions === | === Multi-connector assumptions === | ||
During the collecting of pinout data, some concerns has been raised regarding the actual connections and roles of some pins. In no particular order: | During the collecting of pinout data, some concerns has been raised regarding the actual connections and roles of some pins. In no particular order: | ||
* Pins 1-2 - they're obviously on the same net, that much was already known, but they differentiate from pins 17-18 in that they're connected to different IC. In this case, to a (supposedly) SN99057. But here's the catch - I can't see the label because the component is under RF shield on retail boards, and therefore verify that it does indeed connect there. I have a location of where the trace ends, and the footprint of IC - it's 40-pin QFN. | * Pins 1-2 - they're obviously on the same net, that much was already known, but they differentiate from pins 17-18 in that they're connected to different IC. In this case, to a (supposedly) SN99057. But here's the catch - I can't see the label because the component is under RF shield on retail boards, and therefore verify that it does indeed connect there. I have a location of where the trace ends, and the footprint of IC - it's 40-pin QFN. | ||
* Pins 11-12 connect to SCEI 1148KM458 (as seen on [https://ifixit.com/Teardown/PlayStation+Vita+Teardown/7872 iFixit's tear-down] page) or SCEI 1141KM40L (as seen in [[Components]] table), or even SCEI 1206KM450 (our very own [https:// | * Pins 11-12 connect to SCEI 1148KM458 (as seen on [https://ifixit.com/Teardown/PlayStation+Vita+Teardown/7872 iFixit's tear-down] page) or SCEI 1141KM40L (as seen in [[Components]] table), or even SCEI 1206KM450 (our very own [https://vitadevwiki.com/vita/File:Scei_hadron_pack_shots_01.jpg File:Scei_hadron_pack_shots_01.jpg]), but pin 13 is connected to audio DAC WM1803E instead. This raises question as to why audio DAC controls one unused pin, but the audio pins are handled by whole another chip? | ||
* Pin 10 is either connected to WM1803E, or floating/grounded, can't say for certain. Trace ends right beneath RF shield, and I can see solder pads near DAC, but they look like they're joined with ground plane, judging by colour of the mask. I've left it unchanged until further analysis by a more skilled person. | * Pin 10 is either connected to WM1803E, or floating/grounded, can't say for certain. Trace ends right beneath RF shield, and I can see solder pads near DAC, but they look like they're joined with ground plane, judging by colour of the mask. I've left it unchanged until further analysis by a more skilled person. | ||
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--[[User:Ivdok|Ivdok]] ([[User talk:Ivdok|talk]]) 21:34, 20 August 2018 (UTC) | --[[User:Ivdok|Ivdok]] ([[User talk:Ivdok|talk]]) 21:34, 20 August 2018 (UTC) | ||