Read Sony CX-LFA660 / CX-LFA770 / XR-FA660 / XR-FA770 Service Manual online
39
CX-LFA660/LFA770
• FRONT BOARD IC801 LC876980B-53L3-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
MI-ACK
I
MIACK signal input to the CD unit
2
MP3-RST
O
Reset signal output to the CD unit
3
MP3-REQ
I
Request signal input to the CD unit
4
O-MI-CS
O
MICS signal output to the CD unit
5
O-MI-LP
O
MILP signal output to the CD unit
6
O-MP3-STB
O
Standby signal output to the CD unit
7
O-CD-XTCN
O
XTCN signal output
8
O-CD-XRST
O
System reset signal output
9
O-CD-XLT
O
Latch signal output to the CD unit
10
O-CD-SCOR
I
SCOR (SUBQ request) signal output to the CD unit
11
RESET
I
Reset terminal
12
32.768kHz
I
Input for 32.768kHz crystal oscillation
13
32.768kHz
O
Output for 32.768kHz crystal oscillation
14
GND
—
Ground terminal
15
10MHz
I
Input terminal for ceramic oscillator (10MHz)
16
10MHz-EXTAL
O
Output terminal for ceramic oscillator (10MHz)
17
VDD1
—
Power supply terminal
18
I-POWER-MONITOR
I
Power Voltage and Protect Detect
19
MODEL DETECT
I
Model detect
20
I-KEY1
I
Key AD input 1
21
AREA
I
AREA signal input
22
VOL.ENC
I
Encoder signal input from the volume encoder
23
I-POWER-DOWN
I
Power down signal input
24
TA-SW
I
Tape switch status signal input from the tape deck
25
RDS-DATA
I
RDS data input from the tuner
26
RDS-CLK
I
RDS clock input from the tuner
27
I-KEY0
I
Key AD input 0
28
FUNC-DATA
O
Function coutrol signal output
29
I-RMC
I
Remote sensor signal input
30
NC/VREF
—
Not used
31 to 42
G1 to G12
O
Grid signal output to the fluorescent indicator tube
43 to 45
SEG1 to SEG3
O
Segment signal output to the fluorescent indicator tube
46
VDD3
—
Power supply terminal
47 to 50
SEG4 to SEG7
O
Segment signal output to the fluorescent indicator tube
51
FL-29V
—
VFD Power supply (-)
52 to 60
SEG8 to SEG16
O
Segment signal output to the fluorescent indicator tube
61
NC
—
Not used
62
NC
—
Not used
63
NC
—
Not used
64
NC
—
Connected ground
65
I-SW-TROPN
I
CD tray close detect
66
I-SW-TRCLS
I
CD tray open detect
67
TA- END SW
I
Tape deck reel switch signal input
68
TA-PLAY SW
I
Play switch signal input from the tape deck
69
NC
—
Connected ground
70
TU-STEREO
I
Tuner stereo signal input
71
TU-TUNED
I
Tuner tuning signal input
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