Hitachi HTS541680J9SA00, HTS541640J9SA00, HTS541616J9SA00, HTS541660J9SA00 manual Write DMA Ext 35h

Travelstar 5K160 (SATA) Hard Disk Drive Specification

14.45Write DMA Ext (35h)

	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 Low				-	-			-		-				-	-		-	-		Data Low					-		-		-		-	-		-		-		-
	Data High				-		-			-		-			-	-		-	-		Data High					-			-	-		-	-			-	-		-
	Feature		Current		-		-			-		-			-	-		-	-		Error									...See Below...
			Previous		-	-			-		-				-	-		-	-
	Sector Count		Current		V			V		V			V		V		V	V	V		Sector Count			HOB=0		- - - -							-	-			-	-
			Previous		V			V		V			V		V		V	V	V					HOB=1		-			-	-		-	-			-	-		-
	LBA Low		Current		V			V		V			V		V		V	V	V		LBA Low			HOB=0		V		V		V		V	V		V		V		V
			Previous		V			V		V			V		V		V	V	V					HOB=1		V		V		V		V	V		V		V		V
	LBA Mid		Current		V			V		V			V		V		V	V	V		LBA Mid			HOB=0		V		V		V		V	V		V		V		V
			Previous		V			V		V			V		V		V	V	V					HOB=1		V			V	V V V					V V V
	LBA High		Current		V			V		V			V		V		V	V	V		LBA High			HOB=0		V			V	V		V	V			V	V		V
			Previous		V			V		V			V		V		V	V	V					HOB=1		V			V	V		V	V			V	V		V
	Device				-		1			-		-			-	-		-	-		Device					-			-	-		-	-			-	-		-
	Command				0	0			1		1				0	1		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				AMN			BSY		RDY	DF		DSC	DRQ				COR			IDX				ERR
	V	0	0	V	0				V					0				0		0		V	0		V		-				0			0				V

Figure 100 Write DMA Ext Command (35h)

The Write DMA Ext command transfers one or more sectors of data from the host to the device, then the data is written to the disk media.

The sectors of data are transferred through the Data Register 16 bits at a time.

The host initializes a slave-DMA channel prior to issuing the command. Data transfers are qualified by DMARQ and are performed by the slave-DMA channel. The device issues only one interrupt per command to indicate that data transfer has terminated and status is available.

If an uncorrectable error occurs, the write will be terminated at the failing sector

Output Parameters To The Device

Sector Count Current	The number of continuous sectors to be transferred low order, bits (7:0).
Sector Count Previous	The number of continuous sectors to be transferred high order bits (15:8). If zero is
LBA Low Current	specified in the Sector Count register, then 65,536 sectors will be transferred.
	LBA (7:0).
LBA Low Previous	LBA (31:24).
LBA Mid Current	LBA (15:8).
LBA Mid Previous	LBA (39:32).
LBA High Current	LBA (23:16).
LBA High Previous	LBA (47:40).
Input Parameters From The Device
LBA Low (HOB=0)	LBA (7:0) of the address of the first unrecoverable error.
LBA Low (HOB=1)	LBA (31:24) of the address of the first unrecoverable error.
LBA Mid (HOB=0)	LBA (15:8) of the address of the first unrecoverable error.
LBA Mid (HOB=1)	LBA (39:32) of the address of the first unrecoverable error.
LBA High (HOB=0)	LBA (23:16) of the address of the first unrecoverable error.
LBA High (HOB=1)	LBA (47:40) of the address of the first unrecoverable error.

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