Contents

4.6.2

Write circuit

 

4-10

 

 

 

 

4.6.3

Read circuit

4-13

 

 

 

 

4.6.4

Digital PLL circuit

4-14

 

 

4.7

Servo Control

 

4-15

 

 

 

 

4.7.1

Servo control circuit

4-15

 

 

4.7.2

Data-surface servo format

4-18

 

4.7.3

Servo frame format

4-20

 

 

4.7.4

Actuator motor control

 

4-21

 

 

4.7.5

Spindle motor control

4-22

 

 

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

5.1

Physical Interface

5-2

 

 

 

 

5.1.1

Interface signals

5-2

 

 

 

 

5.1.2

Signal assignment on the connector 5-3

 

5.2

Logical Interface

5-6

 

 

 

 

5.2.1

I/O registers

5-7

 

 

 

 

 

5.2.2

Command block registers

5-8

 

 

5.2.3

Control block registers

 

5-13

 

 

5.3

Host Commands

5-13

 

 

 

 

5.3.1

Command code and parameters

5-14

 

5.3.2

Command descriptions

 

5-16

 

 

5.3.3

Error posting

 

5-88

 

 

 

 

5.4

Command Protocol

5-90

 

 

 

5.4.1

PIO Data transferring commands from device to host

5-90

5.4.2

PIO Data transferring commands from host to device

5-92

5.4.3

Commands without data transfer

5-94

 

5.4.4

Other commands

5-96

 

 

 

5.4.5

DMA data transfer commands

5-96

 

5.5

Ultra DMA Feature Set

5-99

 

 

5.5.1Overview 5-99

5.5.2

Phases of operation 5-100

5.5.3

Ultra DMA data in commands 5-100

C141-E120-02EN

xi

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Image 15
Fujitsu MHN2200AT, MHN2150AT, MHN2100AT, MHN2300AT manual Interface