1. Manuals
  2. Brands
  3. Sony Manuals
  4. CD Player
  5. CFD-Z125 - Cd Radio Cassette-corder
  6. Service manual

Ic Pin Function Description - Sony CFD-Z125 Service Manual

Hide thumbs Also See for CFD-Z125:
Table of Contents

Advertisement

6-9. IC PIN FUNCTION DESCRIPTION

• CD DECODER BOARD IC801 LC5876-1J64
(SYSTEM CONTROL)
Pin No.
Pin Name
I/O
1
COM 2
O
Common drive signal output to the liquid crystal display (LCD801)
2
COM 1
O
Common drive signal output to the liquid crystal display (LCD801)
3
CUP 1
—
Connected to coupling capacitor for the liquid crystal display (LCD 801) of power supply
4
CUP2
—
Connected to coupling capacitor for the liquid crystal display (LCD 801) of power supply
Rest signal input from the reset signal generator (IC802) "L": reset For several hundreds msec.
5
RESET
I
after the power supply rises, "L" is input, then it changes to "H"
Remote control signal input from the remote control receiver (SEN851) "L" active Used for CFD-Z135
6
REM IN
I
only (CFD-Z125 is not used)
7
SQSO
I
Sub-code Q data signal input from the CXD2508Q (IC702)
8
DATA
O
Serial data output to the CXD2508Q (IC702)
9
SQCK, CLOCK
O
Sub-code Q data reading clock signal and serial data transfer clock signal output to the CXD2580Q (IC702)
10
COUNT
I
Track number count signal input terminal. Not used (fixed at "H")
11
SCOR
I
Sub-code sync (S0+S1) detection signal input from the CXD2508Q (IC702)
12
SENS
I
Internal status (SENSE) signal input from the CXD2508Q (IC702)
13
GFS
I
Guard frame sync signal input from the CXD2508Q (IC702) " L": NG, "H": OK
14
FOK
I
Focus OK signal input from the CXA1782BQ (IC701) "L": NG, "H": OK
15
TAPE DIRECTION
I
Detection signal input of the tape direction "L": REV, "H": FWD
16
STEREO IN
I
Stereo detection signal input from the CXA1238S (IC1) "L": stereo
17
SYNC REC IN
I
Detection signal input from the REC switch (S302) "H": REC
WP IN
18
I
Wake-up signal input terminal "H": AC input, "L": using for the dry battery
(REG CHECK)
19
XT OUT
O
Sub system clock output terminal (32.768kHz) (for clock)
20
XT IN
I
Sub system clock input terminal (32.768kHz) (for clock)
21
VDD 2
—
Power supply terminal (Connected to coupling capacitor)
22
VDD 1
—
Power supply terminal (Connected to coupling capacitor)
23
VSS
—
Ground terminal
24
VDD
—
Power supply terminal (+5V)
25
CF IN
I
Main system clock input terminal (4MHz)
26
CF OUT
O
Main system clock output terminal (4MHz)
27
KEY IN 1
I
28
KEY IN 2
I
29
KEY IN 3
I
30
KEY IN 4
I
31
KEY IN 5
I
Key return signal input terminal ("L" active) *1
32
KEY IN 6
I
33
KEY IN 7
I
34
KEY IN 8
I
35
KEY IN9
I
36
M2
I
Not used (fixed at "H")
37
M3
I
Not used (fixed at "H")
38
CD SW
I
Detection signal input from the CD lid open/close detect switch (S702). The CD lid is closed when "L"
39
CD
O
LED drive signal output to the CD indicator (LD352) "L": CD, "H": others function. Not used
40
TAPE
O
LED drive signal output to the TAPE indicator (LD351) "L": others function, "H": TAPE. Not used
Description
Not used
— 47 —
Pin No.
Pin Name
I/O
Power on/off control signal output for the tuner circuit power supply "L": others function, "H": RADIO.
41
AUDIO LED
O
Not used
42
BACK LIGHT
O
Back light on/off control signal output terminal "H": back light on. Not used
43
VSS
—
Ground terminal
44
POWER SW OUT
O
Power on/off control signal output for the main power supply "H": power on
SYSTEM MUTE
45
O
Audio mute on/off control signal output terminal "H": mute on
OUT
46
FUNCTION SW A
O
Mega bass 1 control signal output terminal "H": on Not used (open). Not used
47
FUNCTION SW B
O
Mega bass 2 control signal output terminal "H": on Not used (open). Not used
48
SURROUND
O
Surround on/off control signal output terminal "H": on. Not used
49
CLK OUT
O
Serial data transfer clock signal output to the M62429 (IC302)
50
DATA OUT
O
Serial data output to the M62429 (IC302)
51
CE OUT
O
Chip enable signal output to the M62429 (IC302) "L": address, "H": data. Not used
52
XLAT
O
Serial latch pulse signal output to the CXD2508Q (IC702) "H": active
53
XRST
O
Reset signal output to the CXA1782BQ (IC701) and CXD2508Q (IC702) "L": reset
54
MUTE
O
Mute on/off control signal output to the CXD2508Q (IC702) "H": mute on
55
—
O
Not used (open)
56
KEY SCAN OUT 1
O
57
KEY SCAN OUT 2
O
Key scan signal output terminal ("L" active) *1
58
KEY SCAN OUT 3
O
59
—
O
Not used (open)
60 to 78
SEG 17 to SEG 1
O
Segment drive signal output to the liquid crystal display (LCD801). (Pins 76, 77 are not used)
79
COM 4
O
Common drive signal output to the liquid crystal display (LCD801)
80
COM3
O
Common drive signal output to the liquid crystal display (LCD801)
*1 KEY MATRIX TABLE
KEY SCAN OUT 1
KEY SCAN OUT 2
(pin %§)
(pin %¶)
KEY IN 1 (pin @¶)
POWER
SLEEP
KEY IN 2 (pin @•)
CD
CLOCK
KEY IN 3 (pin @ª)
TAPE
TIMER
KEY IN 4 (pin #º)
RADIO
STANDBY
SURROND
MEGA BASS
(Not used)
KEY IN 5 (pin #¡)
(Not used)
MEGA BASS
(Not used)
KEY IN 6 (pin #™)
VOLUME+
VOLUME –
KEY IN 7 (pin #£)
fl
PLAY MODE
KEY IN 8 (pin #¢)
π
DISPLAY/ENTER
KEY IN 9 (pin #∞)
± TIME SET +
≠ TIME SET –
Mode No.
Function
SHORT
Mode-1
TEST MODE
TEST MODE
Mode-2
SURROND
Provided
Mode-3
AUTO REVERSE
Provided
TIME DISPLAY
Mode-4
12H
SYSTEM
Description
KEY SCAN OUT 3
(pin %•)
—
—
—
—
Mode-1
Mode-2
Mode-3
—
Mode-4
OPEN
In this set
NORMAL MODE
Open
Not provided
Open
Not provided
Open
24H
12H
— 48 —

Advertisement

Table of Contents
loading

Related Manuals for Sony CFD-Z125

Related Content for Sony CFD-Z125

This manual is also suitable for:

Cfd-z135

Table of Contents