Ic Pin Function Description - Sony HCD-TB20 Service Manual

HCD-TB20
• WAVEFORMS
– BD SECTION –
1 3
IC101 ta IC101 el
(RFAC)(CD Play mode) (FE)(CD Play mode)
0.3 Vp-p
1.1 Vp-p
500 mV/DIV, 1 s/DIV 100 mV/DIV, 20 s/DIV
2 4
IC101 ra
IC101 wh (MDP)
(TE)(CD Play mode)
2.5 Vp-p
0.4 Vp-p
7.5 s
100 mV/DIV, 20 s/DIV 1 V/DIV, 4 s/DIV
– MAIN SECTION –
5
IC401 qa (XCOUT)
3.1 Vp-p
30.5 s
1 V/DIV, 10 s/DIV
6
IC401 qd (XOUT)
2.7 Vp-p
62 ns
1 V/DIV, 40 ns/DIV
– DECK SECTION –
7
Q642 collector
12.1 Vp-p
12.8 s
5 V/DIV, 4 s/DIV

7-21. IC Pin Function Description

• IC401 M30622MGN-A00FP MASTER CONTROL (MAIN BOARD)
Pin No. Pin Name I/O
1 NC –
2 RDS DATA I
3 LCD RS O
4 SIRCS I
5 LCD DATA O
6 LCD STB O
7 LCD SCK O
8 BYTE –
9 CNVSS –
10 XCIN I
11 XCOUT O
12 RESET I
13 XOUT O
14 VSS –
15 XIN I
16 VCC –
17 NMI I
18 RDS INT I
19 SCOR I
20 AC CUT I
21 ST MUTE O
22 ST CE O
23 ST DOUT O
24 PWM3 O
25 ST DIN I
26 PWM2 O
27 ST CLK O
28 PWM1 O
29 IIC CLK O
30 IIC DATA O
31 NC –
32 SQ DATA IN I
33 SQ CLK O
34 STEREO I
35 CD DATA O
36 XLT O
37 CD CLK O
38 TC PLAY I
39 TC MUTE O
40 TC LID I
41 REC MUTE O
42 BIAS O
43 TC RELAY O
44 ALC O
45 STB LED O
46 LED3 O
47 LED2 O
48 LED1 O
49 LED CONT O
50 HP DETECT I
50 50
Description
Not used
RDS DATA signal input
LCD reset signal output
Remote control receiver data signal input
LCD DATA signal output
LCD STB signal output
LCD clock signal output
External data bus width select input (connected to ground)
Processor mode switch (connected to ground)
Sub clock input
Sub clock output
System reset input
Main system clock output
Ground
Main system clock input
Power supply (+3.3V)
Not used (connected to Vcc)
RDS interrupt signal input
CD subcode sync detect signal input
AC detect signal input
Tuner muting control signal output
Tuner chip enable signal output
Tuner data signal output
BU PWM3 signal output
Tuner data signal input
BU PWM2 signal output
Tuner clock signal output
BU PWM1 signal output
IIC clock output
IIC data output
Not used (open)
CD SQ data input
CD SQ clock output
STEREO signal input (L=ON,H=OFF)
CD data output
CD latch signal output
CD clock output
Tape deck play switch signal input
Tape deck line muting control signal output
Tape deck lid detect signal input
REC muting control signal output (H=ON,L=OFF)
BIAS control signal output (H=ON,L=OFF)
Tape deck relay control signal output (H=ON,L=OFF)
ALC control signal output (L=ON,H=OFF)
Standby LED control signal output (H=ON,L=OFF)
LED control signal output (not used)
LED control signal output
LED control signal output
LED control signal output for LED 1 to 3
Headphone detect signal input