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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 xi