Hitachi HTS543216L9SA00, HTS543232L9A300, HTS543280L9SA00 14.12Initialize Device Parameters 91h

5K320 SATA OEM Specification

14.12Initialize Device Parameters (91h)

Command Block Output Registers																						Command Block Input Registers
Register					7		6				5	4			3		2			1	0	Register						7	6			5	4		3	2	1	0
Data					-		-				-	-			-		-			-	-	Data						-	-			-	-		-	-	-	-
Feature					-		-				-	-			-		-			-	-	Error									...See Below...
Sector Count					V		V				V	V			V		V			V	V	Sector Count						-	-			-	-		-	-	-	-
LBA Low					-		-				-	-			-		-			-	-	LBA Low						-	-			-	-		-	-	-	-
LBA Mid					-		-				-	-			-		-			-	-	LBA Mid						-	-			-	-		-	-	-	-
LBA High					-		-				-	-			-		-			-	-	LBA High						-	-			-	-		-	-	-	-
Device					-		-				-	-			H		H			H	H	Device						-	-			-	-		-	-	-	-
Command				1		0				0		1		0		0			0		1	Status									...See Below...
			Error Register																						Status Register
7	6	5	4	3					2				1					0				7	6	5		4	3			2				1			0
CRC	UNC	0	IDN	0				ABT					T0N							AM		BSY	RDY	DF		DSC	DRQ			COR					IDX		ERR
																				N
0	0	0	0	0							V		0					0				0	0	0		-	-			0				0			V

Table 67 Initialize Device Parameters Command (91h)

The Initialize Device Parameters command enables the host to set the number of sectors per track and the number of heads minus 1, per cylinder. Words 54-58 in Identify Device Information reflects these parameters.

The parameters remain in effect until the following events:

Another Initialize Device Parameters command is received.

The device is powered off.

Soft reset occurs and the Set Feature option of CCh is set

Output Parameters To The Device

Sector Count The number of sectors per track. 0 does not mean there are 256 sectors per track, but there is no sector per track.

H The number of heads minus 1 per cylinder. The minimum is 0 and the maximum is 15.

105