Fujitsu CHAPTER, Interface

				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

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