Ic Pin Functions - Sony CDP-CX50 Service Manual

QQ
3 7 63 1515 0

7-8. IC PIN FUNCTIONS

• IC101 FOCUS/TRACKING/SLED SERVO (LA9240M)
Pin No. Pin Name
1 FIN2
2
FIN1
3 E
4 F
5
TB
6 TE–
7 TE
8
TESI
9 SCI
10 TH
11 TA
12 TD–
13 TD
14 JP
15 TO
16 FD
17 FD–
18 FA
19 FA–
20 FE
TE
L 13942296513
21 FE–
22
AGND
23 SP
24 SPI
25 SPG
26 SP–
27 SPD
28 SLEQ
29 SLD
30 SL–
31 SL+
32 JP–
33 JP+
34 TGL
35 TOFF
36 TES
37 HFL
www
.
http://www.xiaoyu163.com
I/O
Connected to the pick-up photodiode
I
Added with FIN1 to create RF signal, subtracted with FIN1 to create FE signal
Connected to the pick-up photodiode
I
I Connected to the pick-up photodiode Subtracted with F to create TE signal
I Connected to the pick-up photodiode
DC component of the TE signal is input
I
I Connects the TE signal gain setting resistor between TE pins
O TE signal output
TES (Track Error Sense) comparator input. The TE signal is band-passed and input
I
I Shock detection input
I Tracking gain time constant setting
TA amplifier output
O
I Creates a tracking phase compensation constant between TD and VR pins
O Tracking phase compensation setting
Tracking jump signal (kick pulse) amplitude setting
I
O Tracking control signal output
O Focusing control signal output
Creates a focusing phase compensation constant between FD and FA pins
I
O Creates a focusing phase compensation constant between FD- and FA- pins
Creates a focusing phase compensation constant between FA and FE pins
I
O FE signal output
I Connects the FE signal gain setting resistor between TE pins
Analog signal Ground
–
O Single end output of CV+ and CV- pin signal
I Spindle amplifier input
Gain setting resistor is connected when the spindle 12cm mode
I
I Works together with the SPD pin to connect to the spindle phase compensation constant
O Spindle control signal output
Sled phase compensation constant is connected
I
O Sled control signal output
I Sled feeding signal is input from the microprocessor
Sled feeding signal is input from the microprocessor
I
I Tracking jump signal is input from the DSP
Tracking jump signal is input from the DSP
I
I Tracking gain control signal is input from the DSP Gain becomes low when TGL is "H"
Tracking off control signal is input from the DSP
I
Tracking becomes off when TOFF is "H"
O Outputs TES signal to the DSP
HFL (High Frequency Level) is used to determine whether the main beam is positioned
O
on a pit or a mirror
x ao u163
y
i
— 38 —
http://www.xiaoyu163.com
2 9
8
Function
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9