Hitachi HTS541640J9SA00, HTS541680J9SA00 manual Write DMA CAh/CBh, an unrecoverable error occurs

LBA Low LBA High/Mid

Travelstar 5K160 (SATA) Hard Disk Drive Specification

14.44Write DMA (CAh/CBh)

	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					V	V			V V V				V		V	V
	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			0		0			1 0				1		R	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
	V	0	0	V	0					V			0				0				0	V	V	V	-				0				0			V
Figure		99 Write DMA Command (CAh/CBh)

The Write DMA 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 CountThe number of continuous sectors to be transferred. If zero is specified, then 256 sectors will be transferred.

The sector number of the first sector to be transferred. (L=0) In LBA mode, this register contains LBA bits 0 - 7. (L=1) The cylinder number of the first sector to be transferred. (L=0)

	In LBA mode, this register contains LBA bits 8 - 15 (Mid), 16 - 23 (High).
	(L=1)
H	The head number of the first sector to be transferred. (L=0)
R	In LBA mode, this register contains LBA bits 24 - 27. (L=1)
	The retry bit, but this bit is ignored.
Input Parameters From The Device
Sector Count	The number of requested sectors not transferred. This will be zero, unless
	an unrecoverable error occurs.
LBA Low	The sector number of the last transferred sector. (L=0)
	In LBA mode, this register contains current LBA bits 0 - 7. (L=1)
LBA High/Mid	The cylinder number of the last transferred sector. (L=0)
	In LBA mode, this register contains current LBA bits 8 - 15 (Mid), 16 - 23 (High).
H	(L=1)
	The head number of the last transferred sector. (L=0) In LBA mode, this register
	contains current LBA bits 24 - 27. (L=1)

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