Fujitsu MHY2250BH 用户手册

Contents 

C141-E262 

xi 

4.6.3  Read circuit ........................................................................................... 4-11

 

4.6.4  Digital PLL circuit ................................................................................ 4-12

 

4.7  Servo Control ................................................................................................... 4-13

 

4.7.1  Servo control circuit.............................................................................. 4-13

 

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

 

5.1.3  Electrical specifications .......................................................................... 5-6

 

5.1.4  Connector pinouts ................................................................................... 5-7

 

5.1.5  P11 function ............................................................................................ 5-8

 

5.1.6  Hot Plug ................................................................................................ 5-10

 

5.2  Logical Interface .............................................................................................. 5-11

 

5.2.1  Communication layers .......................................................................... 5-12

 

5.2.2  Outline of the Shadow Block Register.................................................. 5-13

 

5.2.3  Outline of the frame information structure (FIS) ................................. 5-14

 

5.2.4  Shadow block registers ......................................................................... 5-22

 

5.3  Host Commands ............................................................................................... 5-27

 

5.3.1  Command code and parameters ............................................................ 5-27

 

5.3.2  Command descriptions.......................................................................... 5-30

 

(1)

 

RECALIBRATE (X '10' to X '1F')................................................ 5-31

 

(2)

 

READ SECTOR(S) (X '20' or X '21') ........................................... 5-32

 

(3)

 

WRITE SECTOR(S) (X '30' or X '31') ......................................... 5-34

 

(4)

 

WRITE VERIFY (X '3C') ............................................................. 5-36

 

(5)

 

READ VERIFY SECTOR(S) (X '40' or X '41')............................ 5-38

 

(6)

 

SEEK (X '70' to X '7F') ................................................................. 5-40

 

(7)

 

EXECUTE DEVICE DIAGNOSTIC (X '90')............................... 5-41

 

(8)

 

INITIALIZE DEVICE PARAMETERS (X '91') .......................... 5-42