S5L1454A 查看數據表（PDF） - Samsung

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S5L1454A

DVD PLAYER DIGITAL SERVO & DSP IC

Samsung 

S5L1454A

DVD PLAYER DIGITAL SERVO & DSP IC

15

[DH]

87

FE PEAK LEVEL

DBL

FEpk

POS

[DL]

0

0

0

0

DIN

0

FPS2-0 search speed

bit

Description

0

1

000

3.46 Hz

DBL

Number of S_CURVE

SINGLE(1)

DUAL(2)

001

1.73 Hz

Fpk

S_CURVE size

CD,DVDD(small) DVDS(large)

011

0.87 Hz

POS S_CURVE detection position

DVD(low)

CD(high)

111

0.43 Hz

DIN

S_CURVE detection

Empty

Present

 You can also set an S-curve detecting and search method using the command set CDScmd (A6xxxx)'s

constants, FSOS and FSHF. When FSOS = "L", S-curve is detected in both directions without regard to

DDTcmd's UPDN bit. When it is "H", S-curve is detected when UPDN = "L"(actuator up) and actuator is

down. When UPDN = "H"(actuator down), S-curve is detected when actuator is up. This is because the

actuator and the system can be initially unstable, and the S-curve must be detected when they are stable.

Also, you can decide on a full search or half search during DDT using FSHF, to choose the search time.

DDT detection waveform

FODbias(CD)

FODbias(DVD)

FE(CD)

FE(DVD)

FODbias = FSpk * FSval

POS_J

0000

NZlvl

DVD

SINGLE

DVD

DUAL

CD

Fpk_J

DDT_J

0000

LYdt

LYdt

18

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