Hitachi HTS543232L9A300, HTS543280L9SA00 manual Download Microcode 92h, Download Command 92h

Sector Count LBA Low LBA High/Mid

5K320 SATA OEM Specification

14.3 Download Microcode (92h)

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						V		V			V		V				V		V				V	V		Sector Count						-	-			-	-		-	-	-	-
LBA Low						V		V			V		V				V		V				V	V		LBA Low						-	-			-	-		-	-	-	-
LBA Mid						V		V			V		V				V		V				V	V		LBA Mid						-	-			-	-		-	-	-	-
LBA High						V		V			V		V				V		V				V	V		LBA High						-	-			-	-		-	-	-	-
Device						-		-			-			-			-			-			-		-	Device						-	-			-	-		-	-	-	-
Command					1		0			0		1				0		0				1			0	Status									...See Below...
				Error Register																									Status Register
7		8	9	10	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		V	0	0	0						V				0						0					0	1	0		1	-			0				0			V
Table	48 Download Command (92h)
Output Parameters To The Device
Feature				Subcommand code.
				03h : Download and save microcode with offsets.

07h : Download and save microcode. Other values are reserved.

Lower byte of 16-bit sector count value to transfer from the host. Higher byte of 16-bit sector count value to transfer from the host. Buffer offset (only used for Feature = 03h)

This command enables the host to alter the device's microcode. The data transferred using the DOWNLOAD MICROCODE commands is vendor specific.

All transfers shall be an integer multiple of the sector size. The size of the data transfer is determined by the contents of the LBA Low and Sector Count registers. The LBA Low register is used to extend the Sector Count register to create a 16-bit sector count value. The LBA Low register is the most significant eight bits and the Sector Count register is the least significant eight bits.

ABT will be set to 1 in the Error Register if the value in the Feature register is neither 03h nor 07h, or the device is in Security Locked mode. When the reload of new microcode is requested in the data sent by the host for this Download command, UNC error will be set to 1 in the Error Register if the device fails to reload new microcode.

In reloading new microcode, when the spin-up of the device is disabled, the device spins down after reloading new microcode.

A Features register value of 03h indicates that the microcode will be transferred in one or more Download Microcode commands using the offset transfer method. The buffer offset value is starting location in the microcode file, which varies in 512 byte increments. It is defined by the LBA High and LBA Mid registers. The LBA High register is the most significant eight bits and the LBA Mid register is the least significant eight bits of the buffer offset value.

All microcode segments shall be sent to the device in sequence.

The device will abort the DOWNLOAD MICROCODE command and discard all previously downloaded microcode, if the current buffer offset is not equal to the sum of the previous

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