Sony HCD-EP414, Service Manual

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HCD-EP414
6-11. IC Pin Function Description
• IC801 LC877356A-51E1 (SYSTEM CONTROLLER)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45 to 53
54
55
56 to 79
80 to 82
83 to 86
I/O
O
O
O
I
O
O
I
I
O
O
I
I
O
—
I
O
—
I
I
I
I
I
I
I
O
I
I
O
I
O
O
O
O
O
O
I
I
I
I
O
O
O
O
—
O
—
—
O
—
O
Pin Name
TU MUTE
MD LED
TU DO
TU DI
TU CLK
TU CE
RDS DATA
TA ENDSW
CD PWM1
CD PWM2
RESET
XT1
XT2
VSS1
CF1
CF2
VDD1
I POWER MONITOR
KEY0
KEY1
AREA
VOL ENCODER
I POWER DOWN
TA-SW
CLK SHIFT
RDS CLOCK
CD SCOR
TA SOL
RMC
TA R/P
CD DATA
CD XLT
CD CLK
CD ON
CD SQCK
CD SENS
CD SQSO
TU STEREO
TA PLAYSW
ST/BY
TA LED
TU LED
CD LED
NC
SEG
VDD2
VSS2
SEG
LCD BIAS3 to 1
LCD COM0 to 3
Description
Muting signal output to the tuner
MD LED control signal output (not used)
Data output to the tuner
Data input from the tuner
Clock signal output to the tuner
Tuner chip enable signal output to the tuner
RDS data input from the tuner
Tape deck reel switch signal input
PWM1 signal output to the CD unit
PWM2 signal output to the CD unit
Reset signal input from the reset IC (IC803)
Resonator terminal (32.768kHz)
Resonator terminal (32.768kHz)
Ground terminal
Resonator terminal (8.64MHz)
Resonator terminal (8.64MHz)
Power supply terminal
AC power detection signal input
Key AD input 0
Key AD input1
Destination setting terminal
Encoder signal input from the volume encoder
Power down detection signal input
Tape switch status signal input from the tape deck
Clock shift control signal output
RDS clock input from the tuner
SCOR (SUBQ request) signal input from the CD unit
Solenoid control signal output to the tape deck
Remote sensor signal input
REC/PLAY control signal output to the REC/PLAY switch circuit
Data output to the CD unit
Latch signal output to the CD unit
Clock output to the CD unit
CD power supply control signal output
SUBQ clock output to the CD unit
SENS signal input from the CD unit
SUB-Q data input from the CD unit
Stereo/mono detection signal input from the tuner
Play switch signal input from the tape deck
STANDBY LED control signal output
TAPE LED control signal output (not used)
TUNER LED control signal output (not used)
CD LED control signal output (not used)
Not used (open)
Segment signal output to the liquid crystal display module
Power supply terminal
Ground terminal
Segment signal output to the liquid crystal display module
Output bias power supply terminal for the liquid crystal display module
Common signal output to the liquid crystal display module
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