S5L9290X View Datasheet(PDF) - Samsung

Part Name

Description

Manufacturer

S5L9290X

DIGITAL SIGNAL PROCESSOR FOR CDP

Samsung 

DIGITAL SIGNAL PROCESSOR FOR CDP

PRELIMINARY

S5L9290X

SMDS

Hi-Z

SOFFSET

< SMDS output >

SMDS gain control

If the pickup or spindle motor is changed, the entire CLV loop transfer function changes and thus CLV gain must be

controlled. The CLV servo is changed to PI controller type; we can assume that the frequency error output SMDS

controls the P gain and the phase error output SMDP controls the I gain. SMDS gain can be set to 9B'h SGAIN[2:0]

, where gain values of SGAIN are shown below. In terms of a graph, the gain is the slope.

SGAIN[2:0]

000

001

010

011

100

101

110

111

Gain Value

1

2

4

8

16

32

64

128

< SMDS gain setting >

rise_mtval

0

144

216

252

270

279

283

285

SMDS High width (t)

288t

rise_mtval

288t

Maximum error area

< SMDS gain vs SMDS output >

WFCK High width (t)

1t = 1/8.4672MHz

45

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