Kenwood NX-3720HG Service Manual page 28

Pin
Pin Name I/O Modification
No.
6 FNC1 I/O Yes
COM1_TXD
TXD O
(RS-232C)
7 FNC2 I/O Yes
COM1_RXD
RXD I
(RS-232C)
8 FNC3 I/O Yes
RTS(RS232C) O
9 FNC4 I/O Yes
CTS I
(RS232C)
10 FNC5 I/O No
11 FNC6 I/O No
12 50AC O No
13 HR1 I Yes
COM2_TXD O
1-28 (No.RA054<Rev.001>)
Signal
Description
Type
Digital Programmable I/O
Digital RS-232C Serial port
(TXD)
Digital Programmable I/O
Digital RS-232C Serial port
(RXD)
Digital Programmable I/O
Digital RS-232C Serial port (RTS) Voltage Swing
Digital Programmable I/O
Digital RS-232C Serial port
(CTS)
Digital Programmable I/O
Digital Programmable I/O
Power 5V DC Power supply
Analog Horn alert signal input
Digital TXD
Rating and Condition
Parameter Min
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
Voltage Swing ±5
Baud Rate
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
Input Voltage Range -30.0
Threshold Low 0.51
Threshold High -
Baud Rate -
CL -
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
±5
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
Input Voltage Range -30.0
Threshold Low 0.5
Threshold High
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
VIH 4.0
VIL -0.5
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -
Output Voltage 4.5
Output Current -
Input Voltage 5
Input Current -
VOH(Io=-1.5mA) 4.0
VOL(Io=1.5mA) -0.5
Typ Max Unit
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
±5.2 V
- 300k bps
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
- 30.00 V
1.326 - V
1.632 2.448 V
- 300k bps
100 - pF
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
±5.2 - V
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
30.00 V
1.3 V
1.75 2.6 V
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
- 5.2 V
- 1.0 V
- 5.2 V
- 1.1 V
5 5.25 V
- 100.0 mA
- 16 V
- 2.0 A
- 5.2 V
- 1.0 V