Service manual

3.14 TP0332/2
Figure 3.11 Smart Interface Block Diagram
Table 3.4 Ancillary Connector Signal Names and Usage
Connection Signal Name Use Signal Type Direction
2,5mm Ring EXT_LS1 A Balanced speaker drive Nominal mid-supply To ancillary
2,5mm Sleeve EXT_LS1 B Balanced speaker drive Nominal mid-supply To ancillary
2,5mm Tip MIC1 Multi-function, audio in,
ancillary type voltage
and key press voltage
0V to 5V To radio
3,5mm Ring TXD1_OUT RS232 TxD or IIC SCL or
5V supply output (50mA
maximum.)
0V to 5V To ancillary
3,5mm Tip RXD1_IN RS232 RxD or IIC SDA
or trickle charge input
0V to 5V
0V or –12V Space
5V or +12V Mark
) RS232
)
Bi-directional
3,5mm Sleeve 0VA Ground 0V To ancillary
Louds
p
eaker
Am
p
lifier
IC1
Baseband
IC701
Mic In
p
ut
5V
MIC1
EXT_LSA
EXT_LSB
KEY_DET1
IC600
H8/3002
Processor
ADC
5V
0V
Interru
p
t
PTT1
IC801_A
RxD/SDA
RXD1
IC801_B
TR804
0V
TxD/SCL
TXD1
TR806-808
TR801-803
GND
RXD1_OUT
TXD1_OUT
+5V Mic Supply
‘Type’
Resistor
PTT
Key
Mic
Mic Audio