Read Sony STR-DE185 Service Manual online
10
STR-DE185
SECTION 4
DIAGRAMS
1 to 7
DIG7 to 1
O
Digit drive signal output to the fluorescent indicator tube (FL201).
8
+5V
—
Power supply pin (+5 V)
9
CL
O
Serial clock signal output to FM/AM tuner pack.
10
DO
O
Serial data signal output to FM/AM tuner pack.
11
DI
I
Serial data signal input from FM/AM tuner pack.
12
CE
O
Serial chip enable signal output to FM/AM tuner pack.
13
VOL DATA
O
Serial data signal output to sound control IC.
14
VOL CE
O
Serial clock signal output to sound control IC.
15
RDS DATA
I
RDS data signal input from FM/AM tuner pack. (AEP, UK model only)
16
PROTECTOR
I
Overload detection signal input
17
RESET
I
Reset signal input
18
TUNED
I
TUNED indicator detection signal input from FM/AM tuner pack.
19
STEREO
I
STEREO indicator detection signal input from FM/AM tuner pack.
20
AVSS
—
Analog ground
21
VERSION
I
Destination select signal input (Fixed at H: US model, L: AEP, UK model)
22
FM SIGNAL OUT
I
FM/AM signal meter voltage detection signal input from FM/AM tuner pack.
(AEP, UK model only)
23 to 28
AD6 to 1
I
Function keys signal input
29
AVDD
—
A/D converter power supply pin (+5 V)
30
AVREF
—
A/D converter reference voltage input (+5 V)
31
NC
—
Not used. (Connect to AVREF pin in this set)
32
OPEN
—
Not used. (Open)
33
GND
—
Ground
34
X1
I
Master clock input (4.19 MHz)
35
X2
O
Master clock output (4.19 MHz)
36
REC SW1
O
VIDEO 1 ON/OFF signal output
37
REC SW2
O
MD/TAPE ON/OFF signal output
38, 39
VOL A, B
I
Master volume JOG data input A, B
40
FUNC.MUTE
O
Not used. (Fixed at L in this set)
41
CK
O
Serial clock signal output to electoric volume IC.
42
DATA
O
Serial data signal output to electoric volume IC.
43
STB
O
Serial data strobe signal output to electoric volume IC.
44
SYS.POWER
I
System power signal input
45
AC MUTE
O
A-Class mute signal output
46
RDS INT
I
RDS clock signal input from FM/AM tuner pack. (AEP, UK model only)
47
STOP
I
Stop signal input from reset signal generator IC.
48
VSS
—
Ground
49
SIRCS
I
Sircs signal input from remote control receiver IC.
50
TUNER MUTE
O
Muting control signal output to FM/AM tuner pack.
51
NC
—
Not used. (Open)
52
+5V
—
Power supply pin (+5 V)
53
BASS B. LED
O
BASS BOOST LED drive signal output
54
SPK A LED
O
SPEAKERS A LED drive signal output
55
SPK B LED
O
SPEAKERS B LED drive signal output
4-1. IC PIN DESCRIPTION
• IC201 µPD78044FGF-200-3B9 (SYSTEM CONTROLLER, FL DRIVER)
Pin No.
Pin Name
I/O
Pin Description
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