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2.5.4 SP/MIC Connector Specification
Pin
Signal
Pin Name
I/O
No.
Type
1
PTT/RXD
I Digital
2
MICI
I Analog External MIC input
3
NC
- -
4
OPTDET
I Digital
5
50J
O Power
6
AE
- GND
7
TXD
O Digital
8
EXTSPDET
I Digital
9
SPO
O Analog Internal Audio output
Description
PTT/RXD input
VIH
Zin=47kohm
VIL
Baud Rate
Audio Level
Zin=1.8kohm@1kHz
DC Bias
Allowable Frequency
Input impedance
-
-
External option detection
Zin=74kohm
DC 5V Output
Output Voltage
Maximum Output
Current
Ground
Maximum Input
Current
TXD output
VOH(Io=-5mA)
Zout=47kohm
VOL(Io=5mA)
Baud Rate
External speaker detection VIH
VIL
Maximum Output
Power
Standard Output
Power
Rating and Condition
Parameter
Min
Typ
2.0
0.0
-
7.7
12.5
300
-
-
4.9
-
4.1
0.0
-
2.5
0.0
-
-
500
Max
Unit
-
5.3
V
-
0.8
V
-
1.1875
Mbps
17.3
mV
2.9
V
-
3000
Hz
1.8
-
kohm
-
-
-
5
5.1
V
-
100
mA
700
mA
-
5.1
V
-
0.8
V
-
1.1875
Mbps
-
5.3
V
-
0.40
V
-
1300
mW
-
mW
(No.RA053<Rev.001>)1-25
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