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