Read Sony CDX-4180R / CDX-4180RV Service Manual online
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4-1. IC PIN DESCRIPTION
• IC801 MB90574FPV-G-110 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
LD ON
O
Laser power ON/OFF control pin
2
FOK
I
Focus signal detection input
3
XLAT25
O
CD signal process latch output
4
DATA25
O
CD signal process serial data output
5
XRSRO
O
CD signal process IC reset output
6
GFS
I
GFS signal detection input
7
NIL
—
Not used. (Contact to GND.)
8
VCC
—
Power supply (+5 V)
9
PLL SI
I
PLL data input
10
PLL SO
O
PLL data output
11
PLL CKO
O
PLL CLK output
12
NOSE
I
Front panel connect detection input
13
LCD SO
O
LCD serial data output
14
LCD CKO
O
LCD serial clock output
15
BEEP
O
Buzzer control output
16
DBMOD2
O
D-BASS mode set signal output
17
SQSI
I
SUBQ data input
18
NIL
—
Not used. (Contact to GND.)
19
SQCKO
O
SUBQ read clock output
20
UNI SI
I
BUS system serial interface input
21
UNI SO
O
BUS system serial interface output
22
UNI CKI/O
I/O
BUS system serial interface input/output
23
C OUT
I
CD track jump number count input
24
SIRCS
I
Remote commander input
25
SRDT
I
CD-TEXT data input
26
NIL
—
Not used. (Contact to GND.)
27
SCLK
O
CD TEXT data read clock output (Not used.)
28
CLOCK25
O
CD signal process serial clock output
29
SYSRST
O
System reset control output
30
DEEM
O
Emphasis control output
31
DBMOD1
O
D-BASS mode set signal output
32
MD ON
O
Machanism deck section power supply control output
33
VSS
—
GND
34
C
—
Capacitor terminal for power supply
35
CD ON
O
CD power supply control output
36
BUS ON
O
BUS ON control output (Not used.)
37
AD ON
O
Power control output for A/D conversion
38
DVCC
—
Power supply for D/A convertor
39
DVSS
—
GND for D/A convertor
40
TEST
I
Test mode direct setting input
41
VOL CE
O
Electric volume serial chip enable output
42
AVCC
—
Power supply for analog circuit
43
AVRH
—
Power supply for A/D convertor
44
AVRL
—
Power supply for A/D convertor
45
AVSS
—
GND for analog circuit
46
KEY IN0
I
Key input
47
KEY IN1
I
Key input
48
KEY IN2
I
Key input for D-BASS rotary switch
49
RC IN0
I
Rotary commander input
50, 51
NIL
—
Not used. (Contact to GND.)
52
MPDH
I
Tuner multi-path input
SECTION 4
DIAGRAMS
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