5K320 SATA OEM Specification
DOWNLOAD MICROCODE command buffer offset and the previous sector count. The first DOWNLOAD MICROCODE command shall have a buffer offset of zero.
The new firmware becomes effective immediately after the transfer of the last data segment has completed.
When the device detects the last download microcode command for the firmware download the device will perform any device required verification and save the complete set of downloaded microcode.
If the device receives a command other than download microcode prior to the receipt of the last segment the new command is executed and all previously downloaded microcode is discarded.
If a software or hardware Reset is issued to the device before all of the microcode segments have been transferred to the device the device shall abandon all of the microcode segments received and process the Reset.
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