SC9638EP

(Continued)

Pin No.

Symbol

I/O

Description

39

FILTCL

--

DAC left channel filter capacitor.

40

VOL

--

DAC left channel filter capacitor.

41

RAD

--

Tracking drive output

42

FOC

--

Focus drive output

43

SLED

--

Sled drive output

44

MOTO

--

Spindle drive output

45

VDD

--

Servo Supply Voltage

46

GND

--

Servo Ground

47

V2/SLED_SW

--

Sled motor position monitor signal input

48

LDON

--

Laser control signal output with built-in pull up resistor

49

VSSA1

--

Analog Ground of Servo Module ADC.

50

VDDA1

--

Analog Supply Voltage of Servo Module ADC.

51

B

--

Central diode current signal input B

52

A

--

Central diode current signal input A

53

C

--

Central diode current signal input C

54

D

--

Central diode current signal input D

55

F

--

Satellite diode current signal input F

56

E

--

Satellite diode current signal input E

57

VCOM

--

DC Voltage Input

58

ISLICE

--

Data Slice feed-back current output

59

HFIN

--

EFM signal input

60

HFREF

--

Reference signal

61

VSSA2

--

Servo module HF and the analog ground of PLL

62

VDDA2

--

Servo module HF and the analog source supply of PLL

63

CRIN

I

8.4672MHz crystal oscillator input

64

CROUT

O

8.4672MHz crystal oscillator output

FUNCTION DESCRIPTION

1. LCD illustration

The circuit adopts LCD of 4×16, 5V, 1/4duty, and 1/3bias, and the panel is as follows:

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.0

2008.03.24

Http: www.silan.com.cn

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