FUJITSU MHZ2250BJ User Manual
Page 15
Contents
4.6.3 Read
circuit........................................................................................ 4-11
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.................................................................. 4-14
4.7.3 Servo frame format ............................................................................ 4-16
4.7.4 Actuator motor control ...................................................................... 4-17
4.7.5 Spindle motor control ........................................................................ 4-18
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
C141-E280
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