INTERNAL REGISTER DEFINITION

Reg:

Name:

Type:

Address:

9

System Control Register

Write only

9Eh

BIT

LABEL

DESCRIPTION

0

PKV_1

VCM Parking Voltage

1

PKV_2

VCM Parking Voltage

2

VR

1 = connects internal VR reference (2V) to level shift Opamp (for

Vcm calibration).

3

RT0 (*)

VCM Retract Time

4

DOUBLE

1 = Spindle Internal Start-Up Align and Energization time doubled.

5

VCM_EN

Enable VCM section. 1 = Enable, 0 = Disable.

6

RT1 (*)

VCM Retract Time

7

RETRACT

1= VCM retract

”PKV_1”

”PKV_2”

”PARKING VOLTAGE”

0

0

0.725V

0

1

0.531V

1

0

0.398V

1

1

1.080V

”RT0”

”RT1”

”RETRACT TIME”

0

0

320ms

0

1

640ms

1

0

160ms

1

1

320ms

(*) When program Retract Time (RT0 and RT1), Bit 2 REG#8Eh must be always written to 0.

L6254

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