Panasonic EB-X700 Service Manual page 52

7. INTERFACES
7.1.1 External I/O (J300 on main board)
External I/O connector is a 14-pin user interface connector that provides external UART, USB, charger and other interface to
the X700 handset.
Pin No.
1 GND
2 SERIAL-UP
3 SERIAL-
DOWN
4 DTR/
PA-ON
5 RTS
6 CTS
7 nACC-
SENSE
8 ACC-
PWR/VBAT-
IN
9 DATAMODE
/ACCY ID
10 USB D-
11 USB D+
12 USB-VBUS
13 EXT-PWR
14 GND
PROVISIONAL ISSUE
Signal HH EXT
Name
N/A
Function
Ground
TXD, UART data transfer to OMAP, or
UARTS0-TXD, UART data transfer to S-GOLD
RXD, OMAP UART data transfer to EXT, or
UARTS0-RXD, S-GOLD UART data transfer to EXT
UART: Data Terminal ready/Accessory
Recognition
Or: PA control signal for test trigger
UART: Request to send to either OMAP or S-GOLD
UART: Clear to send from either OMAP or S-GOLD
Not used
Peripheral power supply up to 100mA
Accessory identification (to M7 of S-GOLD ADC)
USB IO data -
USB IO data +
Power supply from USB host controller
Power supply for battery charge
Ground
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