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5.2.3.7 Data - Host to Device or Device to Host (Bidirectional)
This Data FIS has the following layout:
3
3
2
2
2
2
2
1
0
9
8
7
6
5
Reserved (0)
0
...
...
n
The Data FIS is used for data transfers between the host system and device.
5.2.3.8 PIO Setup - Device to Host
Error
0
Dev / Head
1
Reserved (0)
2
E_Status
3
Reserved (0)
4
Figure 5.10 PIO Setup - Device to Host FIS layout
The PIO Setup FIS is a device to host FIS, FIS Type 5Fh. The PIO Setup FIS is
used by the device to provide the host adapter with the data transfer count and
DRQ block status during the PIO data phase. This information allows the host
adapter to control PIO data transfers. There are two command structure Response
mappings into a Response FIS in the serial transport.
a) 48-bit command structure PIO Setup mapping
b) 28-bit command structure PIO Setup mapping
C141-E261
2
2
2
2
2
1
1
1
4
3
2
1
0
9
8
7
Reserved (0)
N Dwords of data
(1 to 2048 Dwords)
Figure 5.9 Data FIS (Bidirectional) layout
Status
Cyl High
Cyl High (exp)
Reserved (0)
1
1
1
1
1
1
1
9 8 7 6 5 4 3 2 1 0
6
5
4
3
2
1
0
R R R Reserved (0)
R I D Reserved (0)
Cyl Low
Cyl Low (exp)
Sector Count (exp)
Transfer Count
5.2 Logical Interface
FIS Type (46h)
FIS Type (5Fh)
Sector Number
Sector Num (exp) (0)
Sector Count
5-19
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