Sp/Mic Connector Specification - Kenwood NX-1200 Series Service Manual

2.6.2 SP/MIC Connector Specification

Pin Pin I/O Signal
No. Name Type
1 PTT/RXD I Digital PTT/RXD input
2 MICI I Analog External MIC input
3 MICO O Analog Internal MIC output
4 OPTDET I Digital External option detection
5 50V O Power DC 5V output
6 AE - GND
7 TXD O Digital TXD output
8 NC - -
9 DET I Digital External Speaker Detection
10 SPO O Analog Internal Audio output
Description
Zin = 47kohm
Internal Pull-up (5V)
Zin = 1.8kohm@1kHz
Bias = 5.0V (Load=Open)
Frequency range = 0.3~3kHz
Before Pre-emphasis
Zin = 74kohm
Internal Pull-down (0V)
Active Low
(Controlled by MPU/DSP)
GND
Zout = 6.8kohm
Internal Pull-up (5V)
No Connection
Zin = 47kohm
Internal Pull-up (5V)
Frequency range = 0.3~3kHz
After De-emphasis
Item and Condition Min
Input Voltage (High) 4
Input Voltage (Low) 0
Baud Rate
Maximum Input
Voltage
Standard Input 9.2
Voltage
<Unable to connect>
<Unable to connect>
Output Voltage 4.9
Maximum Output
Current
Maximum Input
Current
Output Voltage (High) 4.9
Output Voltage (Low) 0
Baud Rate
<Unable to connect>
<Unable to connect>
Maximum Output
Power
Standard Output 400
Power
Typ Max Unit
5 6 V
0.5 V
0.2304 Mbps
1100 mVrms
15 20.8 mVrms AF = 1kHz
60% of system Dev
MIC sens = Normal
5 5.1 V Io = 30mA
100 mA
700 mA
5 5.1 V Load = Open
0.1 V Load = Open
0.2304 Mbps
1300 mW AF = 0.3~3kHz
FM Dev.= Maximum
Load = 8ohm
P.S. = 9.0V
500 mW AF = 1kHz
Load = 8ohm
THD = 10%
P.S. = 7.5V
(No.RA077<Rev.001>)1-15
Note