底部接口
Pin Name Direction Description
1 ATMS Audio to mobile
2 AFMS/RTS Audio from mobile/RTS
3 CTS/ONREQ CTS/Mobile Station On REQuest
4 data in Data to mobile (Rx)
5 data out Data from mobile (Tx)
6 ACC in Accessory control to mobile. Used as Rx in some models (i.e. T68) for flashing.
7 ACC out Accessory control from mobile/handsfree sense. Used as Tx in some models (i.e. T68)
for flashing.
8 AGND Audio signal ground + 0V reference
9 flash Flash memory voltage + Service
10 DGND Digital ground
11 Vcc DC + for battery charging + External accessory powering