INTERFACES AND TEST POINTSMMCD020801C8 Section 7 Issue 1Service Manual – 29 – Revision 07 INTERFACES AND TEST POINTS7.1. Interfaces7.1.1 External I/OFigure 7.1: External I/O ConnectorNo. Name HH <==>EXT Function H/H Circuit1 AGND - Audio Ground2 AUDIO_UP <== not used3 AUDIO_DN ==> not used4 DATA MODE0 / <== Accessory Recognition 0 /VBAT IN Battery Voltage Supply input5 nACC_SENSE <== Data Accessory detection6 nAUDIO-ON / ==> Audio Path ControlPAON (L: On = un mute, Hi-Z: Off = mute)PA control signal for test trigger(L :off H 2.8 V:on)7 SERIAL_UP <== Upward serial(9600 bps: SMS cable)(33.8 kbps: Data adaptor I/F Card)(up to 38.4 kbps: Soft Modem cable)(115.2 kbps: Test Command)8 SERIAL_DN ==> Downward serial(Baud rate is the same as SERIAL-UP)9 ACC_PWR ==> Peripheral power supply(on: less than 50 mA)10 DTR / <== RS232C: Data Terminal Ready /DATA_MODE1 Data Accessory recognition 11 14CASE FRONT10570-110095-210095-210095-210582-12.8 V10k33010582-12.8 V10k33010583-11k5330p33022k10582-12.8 V10k33010584-133047kVBAT2.2k10582-12.8 V10k330