Sony CD Walkman D-EJ2000, Service Manual

Page: 21 / 32

21
D-EJ2000
• IC801 T5AJ4-4GC6 (SYSTEM CONTROLLER)
5-10. IC Pin Funvtion Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 to 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41 to 56
57 to 60
61 to 63
64, 65
66
67
68
69
70
71
72
I/O
—
I
O
I
—
O
O
I
I
O
I
I
O
O
O
I
O
O
—
I
I
I
I
I
I
I
I
—
O
I/O
–
I
I
I
I
I
I
I
I
O
O
O
O
O
O
I
O
O
I
I
Pin Name
GND
XIN
XOUT
TEST
VCPU
LINE ON
EN2
RESET
FOK
ASW
SCOR
GRSCOR
AMUTE
XSOE
XLAT
MSDTI
MSDTO
MSCK
VCPU
AD CHGMNT
AD BATMNT
AD KEY2
AD SEL
AD KEY
AD RMKEY
AD DCINMNT
CLOSE
RMCSEL
BEEP
TSB
VCPU2
EXT BATT
TEXTSKIP
DIG TU
RCHG2/1
XSTAND ON
G-PRO
AVLS
HOLD
SEG15 to 0
COM3 to 0
V3 to 1
C1, C0
XWAKE
PGMSO
PGMSI
PGMSCK
AGCPWM
IR RMC
FG I/FGSEL
Description
Ground (digital)
System clock input from CXD3039AR (IC601)
Crystal oscillator output terminal Not used (open)
Test terminal for IC Not used (open)
Power supply (+1.9V)(digital)
Circuit selection signal output during LINE ON
Not used (open)
System reset signal input from the power control (IC402)(“L” : reset)
Focus OK signal input from the digital servo processor (IC601)(“L” : NG, “H” : OK )
ASW signal output
Subcode sync S0 or S1 detection signal input from CXD3039AR (IC601)
GRSCOR signal input from CXD3039AR (IC601)
Analog muting ON/OFF control signal output (“H : muting ON )
Serial data output enable signal output
Serial data latch pulse signal output to CXD3039AR (IC601)
Serial data input from CXD3039AR (IC601)
Serial data output to the power control (IC402) and CXD3039AR (IC601)
Serial data transfer clock output to the power control (IC402) and CXD3039AR (IC601)
Power supply (+1.9V)
Battery charging voltage detection signal input from the power control (IC402)
Battery voltage detection signal input
Key input terminal Not used (fixed at “H”)
LINE OUT/OPTICAL OUT plug-in detection signal input
Key input from S805 to S807 (
x
,
> u .
, /-)
Key input (A/D) from the headphone with the remote controller
DC IN voltage detection input terminal (A/D) also using detection of DC IN existence
CD DOOR OPEN/CLOSE detection switch (S804) signal input
Not used (ground)
Beep sound output terminal to the headphone amplifier (IC301)
Communication data bus input or output to the headphone with the remote controller
Power supply
External battery detection signal input
Not used (ground)
Not used (ground)
Not used (ground)
Detection of setting on the charging stand signal input
G-PROTECTION switch (S803) signal input (“H” : G-PROTECTION 2)
AVLS (Automatic Volume Limiter System) switch (S802) signal input (“L” : normal, “H” : limit)
HOLD switch (S804) signal input (“L” : HOLD OFF, “H” : HOLD)
LCD segments drive signal output Not used (open)
LCD common drive signal output Not used (open)
LCD driver bias output
Capacitor connection terminal for LCD driver voltage step-up
WAKE-UP control signal output (signal for reset the condition of the system stand-by) “L” : Wake
Not used (open)
Not used (open)
Not used (open)
AGC control pulse output Not used (open)
Not used (ground)
FG pulse signal input from the spindle motor driver (IC402)