Fujitsu MHV2120BH 用户手册

Contents

C141-E224

4.6 Read/write Circuit .............................................................................................. 4-9

4.6.1 Read/write preamplifier (PreAMP)......................................................... 4-9

4.6.2 Write circuit ............................................................................................ 4-9

4.6.3 Read circuit ........................................................................................... 4-10

4.6.4 Digital PLL circuit ................................................................................ 4-11

4.7 Servo Control ................................................................................................... 4-12

4.7.1 Servo control circuit.............................................................................. 4-12

4.7.2 Data-surface servo format..................................................................... 4-15

4.7.3 Servo frame format ............................................................................... 4-17

4.7.4 Actuator motor control.......................................................................... 4-18

4.7.5 Spindle motor control ........................................................................... 4-19

CHAPTER 5

Interface..................................................................................... 5-1

5.1 Physical Interface.............................................................................................. 5-2

5.1.1

Interface signals .................................................................................... 5-2

5.1.2

Signal interface regulation.................................................................... 5-4

5.1.2.1

Out of band signaling................................................................. 5-4

5.1.2.2

Primitives descriptions............................................................. 5-5

5.1.3

Electrical specifications........................................................................ 5-7

5.1.4

Connector pinouts ............................................................................... 5-10

5.1.5

P11 function........................................................................................ 5-11

5.1.5.1

Staggered Spin-up .................................................................... 5-11

5.1.5.2

Driving Ready LED ................................................................. 5-11

5.1.6

Hot Plug .............................................................................................. 5-13

5.2 Logical Interface ............................................................................................. 5-14

5.2.1

Communication layers ........................................................................ 5-15

5.2.2

Outline of the Shadow Block Register ............................................... 5-16

5.2.3

Outline of the frame information structure (FIS) ............................... 5-17

5.2.3.1

FIS types .................................................................................. 5-17

5.2.3.2

5.2.3.3

5.2.3.4

DMA Active - Device to Host ................................................. 5-18

5.2.3.5

DMA Setup - Device to Host or Host to Device
(Bidirectional) .......................................................................... 5-19