No. 6125-4/17

LA9251M

Continued from preceding page.

Pin No.

Pin

Function

25

In conjunction with the SPD pin, spindle phase compensation constant connection

26

SPD

Spindle control signal output

27

SLEQ

Sled phase compensation constant connection

28

SLD

Sled control signal output

29

Sled feed signal input from the microcontroller

30

Sled feed signal input from the microcontroller

31

OSC

Oscillator frequency setting

32

(NC)

No connection

33

SLOF

Sled servo off control input

34

TGRF

Tracking servo gain RF level follower function setting

35

SP8

Spindle 8 cm/12 cm mode switching control from the DSP

36

EFBAL

E/F balance adjustment signal input from the DSP

37

FSTA

Focus search control signal input from the DSP

38

LASER

Laser on/off control from the DSP

39

(NC)

No connection

40

TJP

Track jump signal input from the DSP

41

TGL

Tracking gain control signal input from the DSP

42

TOFF

Tracking off control signal input from the DSP

43

TES

TES signal output to the DSP

44

HFL

Output for the HFL signal that indicates whether the main beam is positioned over pits or mirror

45

CLV

CLV error signal input from the DSP

46

GND

GND

47

RF

RF output

48

In conjunction with the RF pin, sets the RF gain and sets the EFM 3T compensation constant

49

SLC

Output for control of the data slice level according to the DSP

50

SLI

Input for control of the data slice level according to the DSP

51

DEF

Disc defect detection output

52

DRF

RF level detection output

53

FSC

Focus search smoothing capacitor output

54

TBC

E/F balance variation range setting

55

FSS

Focus search mode setting

56

57

REFI

Reference voltage bypass capacitor connection

58

VR

Reference voltage output

59

LF2

Disc defect detection time constant setting

60

PH1

RF signal peak hold capacitor connection

61

BH1

RF signal bottom hold capacitor connection

62

LDD

APC circuit output

63

LDS

APC circuit input

64

(NC)

No connection