Diagrams; Ic Pin Description - Sony STR DE197 - AV Receiver Service Manual

4-1. IC PIN DESCRIPTION

• IC201 µPD78045FGF-134-3B9 (SYSTEM CONTROLLER, FL DISPLAY DRIVER)
Pin No. Pin Name
1 to 7 DIG7 to DIG1
8 +5V
9 CL
10 DO
11 DI
12 CE
13 VOL DATA
14 VOL CL
15 RDS DATA
16 PROTECTOR
17 RESET
18 TUNED
19 STEREO
20 AVSS
21 VERSION
22 FM SIGNAL OUT
23 to 28 AD6 to AD1
29 AVDD
30 AV.REF
31 —
32 OPEN
33 GND
34 X1
35 X2
36 REC SW1
37 REC SW2
38, 39 VOL A, VOL B
40 FUNC.MUTE
41 CK
42 DATA
43 STB
44 SYS.POWER
45 AC MUTE
46 RDS INT
47 STOP
48 VSS
49 SIRCS
50 TUNER MUTE
51 —
52 +5V
53 BASS B. LED
54 SPK A LED
55 SPK B LED
SECTION 4

DIAGRAMS

I/O
O Digit drive signal output to the vacuum fluorescent display (FL201).
— Power supply pin (+5 V)
O Serial clock signal output to FM/AM tuner pack.
O Serial data signal output to FM/AM tuner pack.
I Serial data signal input from FM/AM tuner pack.
O Serial chip enable signal output to FM/AM tuner pack.
O Serial data signal output to sound control IC.
O Serial clock signal output to sound control IC.
I RDS data signal input from FM/AM tuner pack. (AEP model only)
I Overload detection signal input
I Reset signal input
I TUNED indicator detection signal input from FM/AM tuner pack.
I STEREO indicator detection signal input from FM/AM tuner pack.
— Analog ground
I Destination select signal input (Fixed at H: US, Canadian model, L: AEP model)
FM/AM signal meter voltage detection signal input from FM/AM tuner pack.
I
(AEP model only)
I Function keys signal input
— A/D converter power supply pin (+5 V)
— A/D converter reference voltage input (+5 V)
— Not used. (Connect to AV.REF pin in this set)
— Not used. (Open)
— Ground
I Master clock input (4.19 MHz)
O Master clock output (4.19 MHz)
O VIDEO 1 ON/OFF signal output
O MD/TAPE ON/OFF signal output
I Master volume JOG data input A, B
O Not used. (Fixed at L in this set)
O Serial clock signal output to electronic volume IC.
O Serial data signal output to electronic volume IC.
O Serial data strobe signal output to electronic volume IC.
I System power signal input
O A-Class mute signal output
I RDS clock signal input from FM/AM tuner pack. (AEP model only)
I Stop signal input from reset/+5.6V regulator IC.
— Ground
I Sircs signal input from remote control receiver IC.
O Muting control signal output to FM/AM tuner pack.
— Not used. (Open)
— Power supply pin (+5 V)
O BASS BOOST LED drive signal output
O SPEAKER A LED drive signal output
O SPEAKER B LED drive signal output
Pin Description
STR-DE197
11