CDX-C4750, CDX-C6600 - Sony Car Audio Service Manual (repair manual). Page 33

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4-11. IC PIN DESCRIPTION
• IC801 MB90574PFV-G-193-BND (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
LD ON
O
Laser ON/OFF control output
2
FOK
I
Focus OK signal detection input
3
XLAT25
O
CD signal processing latch output
4
DATA25
O
CD signal serial data output
5
XRST
O
Reset output to CD signal processor IC.
6
GFS
I
GFS signal detection input
7
NIL
Not used. (Connect to ground in this set.)
8
VCC
Power supply pin (+5 V)
9 – 11
NIL
Not used. (Open)
12
FLS SI/NOSE1
I
Front panel attachment detection input
13
LCD SO/FLS SO
O
LCD serial data output
14
LCD CKO
O
LCD serial clock output
15
BEEP
O
BEEP output
16
NIL
Not used. (Open)
17
SQ SI
I
Sub Q data input
18
NIL
Not used. (Connect to ground in this set.)
19
SQ CKO
O
Sub Q read clock output
20
UNI SI
I
BUS system serial interface input
21
UNI SO
O
BUS system serial interface output
22
UNI CK
I/O
BUS system serial clock input/output
23
C IN
I
Track jump No. count input
24
SIRCS
I
Remote commander input
25
TXT SI
I
CD-TEXT data input
26
NIL
Not used. (Connect to ground in this set.)
27
TXT CKO
O
CD-TEXT data read clock output
28
CLOK25
O
CD signal processing serial clock output
29
SYSRST
O
System reset output
30
DEEMPH
O
De-emphasis output
31
AMP ATT
O
Power amplifier attenuator control output
32
MD ON
O
CD mechanism power control output
33
VSS
Ground
34
C
Power stabilization capacitor pin
35
CD ON
O
CD power control output
36
BUS ON
O
BUS ON control output
37
AD ON
O
Power control output of A/D conversion.
38
DVCC
VREF input of D/A converter.
39
DVSS
Ground of D/A converter.
40
NIL
Not used. (Open)
41
ANGLE
O
LCD view angle alignment output (Not used in this set.)
42
AVCC
Analog power supply pin (+5 V)
43
AVRH
VREF + input of A/D converter.
44
AVRL
VREF – input of A/D converter.
45
AVSS
Analog ground
46 – 48
KEY IN0 – 2
I
Key input 0 – 2
49
RC IN0
I
Rotary commander input 0
50
QUALITY
I
Not used in this set.
51
NIL
Not used. (Connect to ground in this set.)
52
MPDH
I
Tuner multi path input (Not used in this set.)
53
S-METER
I
S-meter voltage detection input
54
VCC
Power supply pin (+5 V)
55
NS MASK
O
Not used in this set.
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