Editing Talk:DualShock 4
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'''Speaker:''' (EAS1S181F) is a built-in [http://en.wikipedia.org/wiki/Loudspeaker#Piezoelectric_speakers Piezoelectric speaker] connected to the main PCB using some raised contacts. | '''Speaker:''' (EAS1S181F) is a built-in [http://en.wikipedia.org/wiki/Loudspeaker#Piezoelectric_speakers Piezoelectric speaker] connected to the main PCB using some raised contacts. | ||
'''Audio codecs:''' There's a {{G|QFN}} 32 pin chip marked with "WM1801G" (Wolfson Microelectronics) "36A0LM6" dead center on the bottom side of the PCB. It is near the audio stuff but it is also near where all the buttons connect. There are 5 test points near it. It appears to be communicating with {{G|SPI BUS}} with constant activity. There's also two resistors that look like {{G|I²C}} pull-up resistors, and there appears to be constant I2C traffic. | '''Audio codecs:''' There's a {{G|QFN}} 32 pin chip marked with "[[:File:WM1801G.jpg|WM1801G]]" (Wolfson Microelectronics) "36A0LM6" dead center on the bottom side of the PCB. It is near the audio stuff but it is also near where all the buttons connect. There are 5 test points near it. It appears to be communicating with {{G|SPI BUS}} with constant activity. There's also two resistors that look like {{G|I²C}} pull-up resistors, and there appears to be constant I2C traffic. | ||
There's a shiny small square chip left of the left analog stick, it is marked with "7710" "325A1", I have no idea what this is, but there's some differential signals coming out of it, it might be USB, the activity stops when I disconnect the USB cable. I think this is connected to the USB port. I suspect this is a OTG chip. | There's a shiny small square chip left of the left analog stick, it is marked with "7710" "325A1", I have no idea what this is, but there's some differential signals coming out of it, it might be USB, the activity stops when I disconnect the USB cable. I think this is connected to the USB port. I suspect this is a OTG chip. | ||
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Some buttons are active low, some are active high (maybe only the thumbstick push buttons). The sheet of flexible circuit for the buttons are active low. | Some buttons are active low, some are active high (maybe only the thumbstick push buttons). The sheet of flexible circuit for the buttons are active low. | ||
I'll keep adding to this section | |||
=== Flexible Film Pin Mapping === | === Flexible Film Pin Mapping === | ||