Read Panasonic KX-T7436C / KX-T7436C-B Service Manual online
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KX-T7436C/KX-T7436C-B
2. IC2
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AG1
REFDA
APMP
HO+
HO
–
A5V1
A5V2
SPO
AG2
P/
–
S
–
RESET
DG1
OP0
OP1
D5V1
OP2
OP3
OP4
OP5
OP6
OP7
RXD
TXD
–FSYNC
BCLK
MCLK
CLKO
DG2
OSCI
OSCO
A5V3
APMO
APMN
HI
VBB
MI
AG3
A5V4
AP2HO
AP2HI
AP1HO
VREFM
AG4
AP1HN
AP1HP
D5V2
–
CE/
–
DOE
ALE
–
WR/
–
STB
–
RD/SDO
D7/SFT
D6/SDI
D1/OP9
D5/WBR
D4/OPC
D3/OPB
D2/OPA
–
INT
TEST
D0/OP8
Name
NO.
I/O
Classification
Function
APMP
1
Analog
input
input
Analog
Non-inverting input terminal of microphone amplifier M1.
Connect to the microphone.
Connect to the microphone.
VREFDA
2
---
Power
supply, etc.
supply, etc.
Reference voltage terminal of DAC.
Connect the capacitor of 40
Connect the capacitor of 40
µ
F between this terminal and pin 9(AG2).
AG1
3
Ground terminal of the analog circuit.
HO+
4
Analog
output
output
Analog
Output terminal for the handset receiver.
HO+ terminal and HO– terminal are biased to Vdd/2 voltage.
HO– terminal is the inverse porality output terminal for pin 4 (HO+).
Connect the capacitor in series between the handset and these terminals to
cut the DC .
Use the nonpolar type capacitor.
HO+ terminal and HO– terminal are biased to Vdd/2 voltage.
HO– terminal is the inverse porality output terminal for pin 4 (HO+).
Connect the capacitor in series between the handset and these terminals to
cut the DC .
Use the nonpolar type capacitor.
HO–
5
A5V1
6
---
Power
supply, etc.
supply, etc.
5V power supply terminal of analog circuit.
A5V2
7
SPO
8
Analog
output
output
Analog
Output terminal for the speaker amplifier.
Connect to the external speaker amplifier input terminal.
SPO terminal is biased to Vdd/2 voltage.
Connect the capacitor of 0.1
Connect to the external speaker amplifier input terminal.
SPO terminal is biased to Vdd/2 voltage.
Connect the capacitor of 0.1
µ
F in series between the external speaker
amplifier input terminal and this terminal.
AG2
9
---
Power
supply, etc.
supply, etc.
Ground terminal of the analog circuit.
P/–S
10
CMOS
input
input
Micro-
computer
interface
computer
interface
Mode selection terminal of microcomputer interface. Inputting "0" selects
the serial mode, and "1" selects the parallel mode.
the serial mode, and "1" selects the parallel mode.
–RESET
11
DG1
12
---
Power
Supply, etc.
Supply, etc.
System reset terminal.
The system is reset when "0" is pressed.
The system is reset when "0" is pressed.
Ground terminal of the digital circuit.
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