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Contents
C141-E218 xi
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 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 ...............................................................................................5-14
5.3.1 Command code and parameters ............................................................5-14
5.3.2 Command descriptions..........................................................................5-18
(1) RECALIBRATE (X’10’ to X’1F’).................................................5-20
(2) READ SECTOR(S) (X’20’ or X’21’) ............................................5-21
(3) WRITE SECTOR(S) (X’30’ or X’31’)...........................................5-23
(4) WRITE VERIFY (X’3C’)...............................................................5-25
(5) READ VERIFY SECTOR(S) (X’40’ or X’41’).............................5-26
(6) SEEK (X’70’ to X’7F’) ..................................................................5-27
(7) EXECUTE DEVICE DIAGNOSTIC (X’90’) ................................5-28
(8) INITIALIZE DEVICE PARAMETERS (X’91’) ...........................5-30
(9) DOWNLOAD MICROCODE (X’92’)...........................................5-31
(10) STANDBY IMMEDIATE (X’94’ or X’E0’) ...............................5-33
(11) IDLE IMMEDIATE (X’95’ or X’E1’) / UNLOAD
IMMEDIATE (X’E1’)..................................................................5-34