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