Fujitsu MHY2040BH, Product/Maintenance Manual

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Interface
5-20 C141-E262
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.