S5L9284D View Datasheet(PDF) - Samsung

Part Name

Description

Manufacturer

S5L9284D

DIGITAL SIGNAL PROCESSOR

Samsung 

S5L9284D

DIGITAL SIGNAL PROCESSOR

XPHSP-Mode

The XPHSP mode is the mode used in normal operation. It samples a LKFS signal made in the frame sync block at

a cycle of PBFR/16. If the sampling is “H”, the phase mode is performed, and if “L” is sampled 8 times

consecutively, the speed mode is performed automatically. The selection of peak hold period of speed mode, and

bottom hold period and gain of speed / Hspeed mode is determined by the CNTL-W register.

VPHSP-Mode

The VPHSP-mode is the mode used for rough servo control. It uses VCO instead of X-tal in the EFM pattern test.

When the range of VCO center changes, VCO is easily locked because the rotation of a spindle motor changes in

the same direction.

STOP

Stop is the mode used to stop the spindle motor.

SMDP

L

SMSD

Hi-Z

SMEF

L

SMON

L

XTFR/4 :

(XTFR/8)

PBFR/4 :

( PBFR/8)

SMPD :

Hi-Z

Hi-Z

Hi-Z

Figure 17. Timing Chart SMDP Output

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