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2.3 USB Board Ass'y
J1 (Logic board I/F)
No.
Signal name
1 GND
2 Vbus
3 D-
4 D+
J2 (USB I/F: USB connector B)
No.
Signal name
1 Vbus
2 D-
3 D+
4 GND
J3 (USB/DC board I/F)
No.
Signal name
1 GND
2 VIN
3 CNT
J4 (AC adapter I/F: DC jack)
No.
Signal name
1 VIN
2 GND
3 CNT
J3
J4
Cable GND
Cable power supply
Data signal line
Data signal line
Cable power supply
Data signal line
Data signal line
Cable GND
AC adapter GND
AC adapter output
Power supply FET switch control
AC adapter GND
AC adapter output
Power supply FET switch control
Function
Function
Function
Function
3 - 8
J1
J2
Input/Output
IN
I/O
I/O
Input/Output
IN
I/O
I/O
Input/Output
IN
OUT
Input/Output
IN
IN
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