Device to Host FIS - FIS Type (34h)

Device to Host FIS:

		31		30	29	28	27	26	25	24		23	22	21	20	19	18	17	16	15	14		13		12		11	10	9	8	7	6	5	4	3	2	1	0
	0		Error								Status									R		I		R		R	PM Port				FIS Type (34h)
	1		Device								LBA(23:16)									LBA(15:8)											LBA(7:0)
	2		Reserved)								LBA(47:40)									LBA(39:32)											LBA(31:24)
	3		Reserved								Reserved									Count(15:8)											Count(7:0)

FIS Type - Set to a value of 34h. Defines the rest of the FIS fields. Defines the length of the FIS as five Dwords.

LBA(7:0) - Contains the contents of the LBA Low register of the Shadow Register Block.

LBA(15:8) - Contains the contents of the LBA Mid register of the Shadow Register Block.

LBA(39:32) – Contains the contents of the expanded address field of the Shadow Register Block

LBA(23:16) - Contains the contents of the LBA High register of the Shadow Register Block.

LBA(47:40) – Contains the contents of the expanded address field of the Shadow Register Block

Device - Contains the contents of the Device register of the Shadow Register Block.

PM Port –When an endpoint device is attached via a Port Multiplier , specifies the device port address that the FIS is received from. This field is set by the Port Multiplier. Endpoint devices shall set this field to 0h.

R – Reserved – shall be cleared to zero.

Count(7:0) - Contains the contents of the Sector Count register of the Shadow Register Block.

Count(15:8) – Contains the contents of the expanded address field of the Shadow Register Block

LBA(7:0) - Contains the contents of the LBA Low register of the Shadow Register Block.

LBA(31:24) – Contains the contents of the expanded address field of the Shadow Register Block.

Error - Contains the new value of the Error register of the Shadow Register Block.

I - Interrupt bit. This bit reflects the interrupt bit line of the device. Devices shall not

modify the behavior of this bit based on the state of the nIEN bit received in Register Host to Device FISes.