Fujitsu MHZ2250BJ Manuel d'utilisateur télécharger pdf (Page 94)

Interface

FIS Type - Set to a value of 5Fh. Defines the rest of the FIS fields.

Defines the length of the FIS as five Dwords.

Cyl Low - Holds the contents of the cylinder low register of the

Command Block.

Cyl Low (exp) - Contains the contents of the expanded address field of the

Shadow Register Block.

Cyl High - Holds the contents of the cylinder high register of the

Command Block.

Cyl High (exp) - Contains the contents of the expanded address field of the

Shadow Register Block.

D - Indicates whether host memory is being written or read by

the device.

1 = write (device to host), 0 = read (host to device).

Dev / Head - Holds the contents of the device / head register of the

Command Block.

Dev / Head (exp) - Contains the contents of the expanded address field of the

Shadow Register Block.

E_Status - Contains the new value of the status register of the task file

block for correct synchronization of data transfers to host.

Error - Contains the new value of the Error register of the Command

Block at the conclusion of all subsequent Data to Device

frames.

I - Interrupt bit. This bit reflects the interrupt bit line of the device.

R - Reserved (0)

Sector Count - Holds the contents of the sector count register of the

Command Block.

Sector Count (exp) - Contains the contents of the expanded address field of the

Shadow Register Block.

Sector Number - Holds the contents of the sector number register of the

Command Block.

Sector Num (exp) - Contains the contents of the expanded address field of the

Shadow Register Block.

Status - Contains the new value of the status register of the Command

Block at the conclusion of all subsequent PIO Data to Device

frames.

Transfer Count - Holds the number of bytes to be transferred in the subsequent

data FIS.

5-20 C141-E280

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 319 320

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Fujitsu MHZ2250BJ Manuel d'utilisateur Page 94