Fujitsu MHY2200BS, MHY2160BS, MHY2120BS manual Set Device Bits Device to Host, Set Device Bits FIS

5.2 Logical Interface

5.2.3.9 Set Device Bits - Device to Host

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Error R Status Hi R Status Lo R I R Reserved (0) FIS Type (A1h)

SActive 31:0

Figure 5.11 Set Device Bits FIS

The Set Device Bits -

Device to Host FIS is used by the device to load Shadow Command Block bits for which the device has exclusive write access. These bits are the eight bits of the Error register and six of the eight bits of the Status register. This FIS does not alter bit 7, BSY, or bit 3, DRQ, of the Shadow Status register.

FIS Type -	Set to a value of A1h. Defines the rest of the FIS fields. Defines the
	length of the FIS as two Dwords.
I -	Interrupt Bit. This bit signals the host adapter to enter an interrupt
	pending state if both the BSY bit and the DRQ bit in the shadow
	Status register are zero when the frame is received.
Error -	Contains the new value of the Error register of the Shadow Register
	Block.
Status-Hi -	Contains the new value of bits 6, 5, and 4 of the Status register of
	the Shadow Register Block.
Status-Lo -	Contains the new value of bits 2,1, and 0 of the Status register of
	the Shadow Register Block.
SActive -	The SActive field of the Set Device Bits FIS communicates
	successful completion notification for each of up to 32 queued
	commands. The field is bit-significant and the device sets bit
	positions to one for each command tag it is indicating successful
	completion notification for. The device may set more than one bit
	to one if it is explicitly aggregating successful status returns. The
	device shall only indicate completion notification for a command if
	it has completed successfully.

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