TERMINAL FUNCTIONNX-80069D-sub 25-pin connector specificationPin No. Pin Name I/O A/D Rating and ConditionParameter Min Typ Max Unit1 NC - - -Input Voltage Range -30 30 VThreshold Low 0.5 1.3 V2 RXD1 I Digital Threshold High 1.75 2.6 VBaud Rate 115200 bpsCL 100 pFVoltage Swing (3kΩ Load) ± 5 ± 9 V3 TXD1 O Digital Baud Rate 115200 bpsCL 100 pFVIH 4 - 5.2 V4 AUXIO9 I/O Digital VIL -0.5 - 1 VVOH (Io=-1.5mA) 4 - 5.2 VVOL (Io=1.5mA) - - 1.1 V5 DI I Analog Input Voltage range (STD Deviation) - 0.5 - Vp-pFreq Response (STD Dev.) 20-9600Hz -3 3 dBAudio Level (STD Deviation) - 5 - mVrms6 MI2 I Analog Allowable Freq 300 3000 HzInput Impedance - 600 - Ω7 GND - GNDVIH 4 - 5.2 V8 AUXIO8 I/O Digital VIL -0.5 - 1 VVOH (Io=-1.5mA) 4 - 5.2 VVOL (Io=1.5mA) - - 1.1 VVOH (Io=-1.5mA) 3.7 - 5.2 V9 TXD2 O Digital VOL (Io=1.5mA) - - 1.1 VCL 100 pFVIH 2.8 - 5.2 V10 RXD2 I Digital VIL - - 0.65 VCL 100 pF11 GND - GNDVIH 4 - 5.2 V12 AUXIO7/ I/O Digital VIL -0.5 - 1 VBER_DATA VOH (Io=-1.5mA) 3.7 - 5.2 VVOL (Io=1.5mA) - - 1.1 VVIH 4 - 5.2 V13 AUXIO6/ I/O Digital VIL -0.5 - 1 VBER_CLK VOH (Io=-1.5mA) 3.7 - 5.2 VVOL (Io=1.5mA) - - 1.1 V14 SB - Power Voltage This parameter depends on Battery VoltageSupply Current - - 2 AThe type of this port is open collector.15 AUXO2 O Digital VOL 0.4 VIOL -500 mA