L7200 데이터 시트보기 (PDF) - STMicroelectronics

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L7200

MOZART, 12V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO”

STMicroelectronics 

L7200

INTERNAL REGISTERS DEFINITION (continued)

BIT

LABEL

DESCRIPTION

6 FLLCOARSE<10>

Bit 10 of Spindle FLL Coarse Counter.

7 FLLCOARSE<11>

MSB of Spindle FLL Coarse Counter.

Reg:

5

Name: Spindle FLL Fine Register

Type: Write only

Address: 5Eh

BIT

LABEL

0 FLLFINE<0>

1 FLLFINE<1>

2 FLLFINE<2>

3 FLLFINE<3>

4 FLLFINE<4>

5 FLLFINE<5>

6 FLLFINE<6>

7 FLLFINE<7>

DESCRIPTION

LSB of Spindle FLL Fine Counter.

Bit 1 of Spindle FLL Fine Counter.

Bit 2 of Spindle FLL Fine Counter.

Bit 3 of Spindle FLL Fine Counter.

Bit 4 of Spindle FLL Fine Counter.

Bit 5 of Spindle FLL Fine Counter.

Bit 6 of Spindle FLL Fine Counter.

Bit 7 of Spindle FLL Fine Counter.

Reg:

6

Name: Spindle Set-Up 3 Register

Type: Write only

Address: 6Eh

BIT

LABEL

0 FLLFINE<8>

1 FLLFINE<9>

2 FLLFINE<10>

3 COEFF_B0<8>

4 COEFF_B1<8>

5 STUCKSET

6 CLAMP0

7 CLAMP1

DESCRIPTION

Bit 8 of Spindle FLL Fine Counter.

Bit 9 of Spindle FLL Fine Counter.

MSB of Spindle FLL Fine Counter.

MSB of Spindle FLL filter coefficient B0.

MSB of Spindle FLL filter coefficient B1.

Spindle Stuck Rotor Time. “0” 400mS. “1” 100mS.

KFLL clamp. First Bit.

Bit 7

Bit 6

KFLL clamp. Second Bit.

0

0

0

1

1

0

1

1

Clamp

0.50

0.55

0.60

0.65

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