Hitachi HDS723020BLA642 manual Set Max Address F9h, Set Max Address Command F9h

7K200 SATA OEM Specification

14.35Set Max Address (F9h)

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						V	V			V		V				V		V			V		V		Error								...See Below...
Sector Count						-		-			-			-			-		-			-		B	Sector Count						-	-				-		-		-	-	-		-
LBA Low						V		V			V		V				V		V			V		V	LBA Low						V	V				V		V		V	V	V	V
LBA Mid						V		V			V		V				V		V			V		V	LBA Mid						V	V				V		V		V	V	V	V
LBA High						V		V			V		V				V		V			V		V	LBA High						V	V				V		V		V	V	V	V
Device						-		L			-			-			H		H			H		H	Device						-	-				-		-		H	H	H		H
Command					1		1			1		1				1		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	V	0		-	-			0						0			V

Table 105 Set Max Address Command (F9h)

The Set Max Address command overwrites the max LBA/CYL of HDD in a range of actual device capacities. The device receives this command, all accesses beyond that LBA/CYL are rejected with setting ABORT bit in status register. Identify device command and Identify device DMA command returns the LBA/CYL which is set via this command as a default value.

This command implement SET Max security extension commands as subcommands. But regardless of Feature register value, the case this command is immediately preceded by a Read Native Max Address command, it is interpreted as a Set Max Address command.

The Read Native Max Address command should be issued and completed immediately prior to issuing Set Max Address command. Otherwise this command is interpreted as a Set Max security extension command which is destinated by feature register. If Set Max security mode is in the Locked or Frozen, the Set Max Address command is aborted.

For more information, see “12.10.2 Set Max security extension commands” on Page 65.

In CHS mode, LBA High, LBA Mid specify the max cylinder number. The Head number of Device and LBA Low are ignored. The default value(See default CHS in Identify device information) is used for that.

In LBA mode, the Head number of Device, LBA High, LBA Mid and LBA Low specify the max LBA. This command sets this LBA as the max LBA of the device.

After a successful command completion, Identify Device response words (61:60) shall reflect the maximum address set with this command.

If the 48-bit Address feature set is supported, the value placed in Identify Device response words (103:100) shall be the same as the value placed in words (61:60). However, if the device contains greater than 268,435,455 sectors, the capacity addressable with 28-bit commands, and the address requested is 268,435,455, the max address shall be changed to the native maximum address, the value placed in words (61:60) shall be 268,435,455 and the value placed in words (103:100) shall be the native maximum address.

If a host protected area has been established by a Set Max Address Ext command, the device shall return command aborted.

Output Parameters To The Device

FeatureDestination code for this command

01h SET MAX SET PASSWORD

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