Ic Pin Function Description - Sony Walkman D-EJ955 Service Manual

D-EJ955
Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
IC301 TA2152FN (EL)
24 23 22 21 20 19 18
C-AMP SW BEEP
BIAS
PWA PWC
1 2 3 4 5 6 7
IC404 TB2127AFN (EL) T E
L 1 3 9 4 2 2 9 6 5 1 3
SYNC 1
VC
XBRK 2 +
–
FG 3 TRIANGULAR
WAVE
GENERATING
VC 4
CONTROL
DGND 5
XRST 6
DATA 7
XLAT 8
CLK 9
VDU 10
U 11
PRE-DRIVER
PGUV 12
w w w
17 16 15 14 13
PW/MUTE SW
PWB
8 9 10 11 12
24 PWM
23 APWM
22 AGND
21 VG
20 COM
19 UI
18 VI
17 WI
16 PGW
15 W
14 VDVW
13 V
x a o
y
. i
http://www.xiaoyu163.com

5-9. IC PIN FUNCTION DESCRIPTION

8
• IC403 TB2130F (FOCUS/TRACKING COIL DRIVER, SLED MOTOR DRIVER, POWER CONTROL)
Pin No. Pin Name I/O
1 VREF I Reference voltage input terminal
2 RF41 O Power supply 4 (APC) section operational amplifier 1 output
3 PAPC I Power supply 4 (APC) section operational amplifier 1 non-invert input
4 VINDET I VIN detection signal input terminal Not used (open)
5 RF4 O Power supply 4 (APC) section operational amplifier 2 output
6 INM4 I Power supply 4 (APC) section operational amplifier 2 invert input
7 APCREF I AGC control pulse signal input from the system controller (IC801)
8 L5 —
Connected to the inductor for VG
9 VG O
VG output terminal
10 GND —
Ground terminal
11 SYNC I
176.4 kHz clock signal input from the CXD3029R (IC601)
Wakeup control signal input from the system controller (IC801) (for system standby reset)
12 WAKE I
"L": wakeup The stop status is reset with the falling edge of input signal
13 CLOK
I Serial data transfer clock signal input from the system controller (IC801)
14 DATA
I Serial data input from the system controller (IC801)
15 LATCH I Serial data latch pulse signal input from the system controller (IC801)
System reset signal output to the system controller (IC801) "L": reset
16 RSTB O
For several hundreds msec. after the power supply rises, "L" is output, then it changes to "H"
17 FI2 I Sled servo drive signal (+) input from the CXD3029R (IC601)
18 RI2 I Sled servo drive signal (–) input from the CXD3029R (IC601)
19 FI3 I Not used (fixed at "L")
Q Q
3 7 6 3
20 RI3 I Not used (fixed at "L")
21 FI4 I Tracking servo drive signal (+) input from the CXD3029R (IC601)
22 RI4 I Tracking servo drive signal (–) input from the CXD3029R (IC601)
23 VD4 I Power supply input terminal for tracking servo drive
24 RO4 O Tracking coil drive signal (–) output
25 MGND4 — Ground terminal (for tracking servo drive)
26 FO4 O Tracking coil drive signal (+) output
27 VD34 I Power supply input terminal for tracking servo drive
28 RO3 O Not used (open)
29 MGND3 — Ground terminal
30 FO3 O Not used (open)
31 VD23 I Power supply input terminal for sled servo drive
32 RO2 O Sled motor (M901) drive signal (–) output
33 MGND2 — Ground terminal (for sled servo drive)
34 FO2 O Sled motor (M901) drive signal (+) output
35 VD12 I Power supply input terminal for focus servo drive and sled servo drive
36 RO1 O Focus coil drive signal (–) output
37 MGND1 —
Ground terminal (for focus servo drive)
38 FO1 O
Focus coil drive signal (+) output
39
VD1 I Power supply input terminal for focus servo drive
40 FI2 I
Focus servo drive signal (+) input from the CXD3029R (IC601)
u 1 6 3
41 RI2 I
Focus servo drive signal (–) input from the CXD3029R (IC601)
42
CHGSW O Battery charge control transistor drive signal output
.
43
RS1 I Battery charge current detection terminal
Battery charge circuit error amplifier non-invert input terminal for rechargeable battery
44 INP1 I
Not used (open)
18 18
http://www.xiaoyu163.com
2 4
9 9 8
Description
1 5 1 5 0 8 9 2 4
m
c o
2
9 9
9 8 2 9 9