Fujitsu MHY2120BH 用户手册

 

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.