1 BASIC FUNCTION2 Function Reference Version: 1.11PF keysPress any key to activate a function assigned to eachfunction key.Table 1-1 Assigning Signals to the 25-pin ExternalConnectorTable 1-2 Assigning Signals to the 8-pin ExternalConnectorTable 1-3 Assigning Signals to the 26-pin InternalConnectorPinNumber Pin Name Input/Output Description1 NC - No connection2 RXD 1 Input Serial data input 13 TXD 1 Output Serial data input 14 AUX I/O 9 Input/Output Auxiliary I/O 95 DI Input Data signal input6 MI2 Input External Mic Input7 GND - Ground8 AUX I/O 8 Input/Output AUX I/O 89 TXD 2 Output Serial data input 210 RXD 2 Input Serial data input 211 GND - Ground12 AUX I/O 7 Input/Output Auxiliary I/O 713 AUX I/O 6 Input/Output Auxiliary I/O 614 SB -Power output inconjunction with thePower switch15 AUX OUT 2 Output Auxiliary OUT 216 AUX OUT 1 Output Auxiliary OUT 117 AFO Output RX Filtered AudioOutput18 GND - Ground19 DEO Output Detected Signal Output20 AUX I/O 5 Input/Output Auxiliary I/O 521 AUX I/O 4 Input/Output Auxiliary I/O 422 AUX I/O 3 Input/Output Auxiliary I/O 323 AUX I/O 2 Input/Output Auxiliary I/O 224 AUX I/O 1 Input/Output Auxiliary I/O 125 ME - Mic GroundPinNumber Pin Name Input/Output Description1 BLC Output- MIC Backlight Control2 PSB Input DC 13.6 V3 E - Ground4 PTT/TXD Input/OutputPTT: PTT INTXD: Serial Output5 ME - Mic Ground6 MIC Input MIC Signal Input7 HOOK/RXD Input HOOK: HOOK DetectionRXD: Serial DATA IN8 DM Input/Output MIC DATA DetectionNo. Name Option Input/Output Description1 OPT1Scrambler Output CODE 1ANI Output CH BUSYVGS-1 Input BUSY2 OPT3Scrambler Output CODE 2ANI Input KEYVGS-1 Input PLAY3 RXD1Scrambler - -ANI - -VGS-1 Input SO4 TXD1Scrambler - -ANI - -VGS-1 Output SI5 CKScrambler - -ANI - -VGS-1 Output CLK6 OPT4Scrambler Output PTTANI Output PTTVGS-1 Output ENABLE7 USELScrambler - -ANI - -VGS-1 - USEL8 OPT5Scrambler Output CODE 4ANI Output EMERVGS-1 Output RESET9 DGNDScrambler - -ANI - -VGS-1 - D-GND
