Fujitsu MHT2040BH, MHT2060BH, MHT2080BH Download Microcode X’92’, Operation of Download Microcode

5.3 Host Commands

(11) DOWNLOAD MICROCODE (X’92’)

At command issuance (Shadow Block Registers setting contents)

CM	1	0	0	1		0		0	1	0
DH	1	x	1		x		0	0	0	0
CH						00
CL						00
SN			Sector count (15-8)
SC				Sector count (7-0)
FR			Subcommand code

At command completion (Shadow Block Registers contents to be read)

ST				Status information
DH	1	x	1		x		0	0	0	0
CH						00
CL						00
SN						xx
SC						xx
ER				Error information

This command rewrites the microcode of the device (firmware).

When this command is accepted, the device does beginning the data transfer of the microcode or the microcode rewriting according to Subcommand code (Rewriting is also possible simultaneously with the data transfer). Refer to Table 5.7.

In the data transfer of Subcommand code:01h, transfer by which data is divided into multiple times is possible. Refer to Table 5.8.

After the designation of rewriting by Subcommand code:07h, reactivates in the device for the update of the rewriting microcode of the microcode.

Table 5.7 Operation of DOWNLOAD MICROCODE

Host Command			Movement of device
Subcommand code	Sector count	Data transfer	Microcode rewriting execution
(FR Field)	(SN, SC Field)
01h	0000h	Non	Rewriting execution reservation
	xxxxh	It is.	Rewriting execution reservation
07h	0000h	Non	Execution. **
	xxxxh	It is.	Execution. **
Excluding 01h and 07h	−		Abort

C141-E203-01EN 5-41