Fujitsu MJA2500BH Maintenance Manual - Page 93

Data - Host to Device or Device to Host Bidirectional, PIO Setup - Device to Host FIS layout

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5.2 Logical Interface 5.2.3.7 Data - Host to Device or Device to Host (Bidirectional) This Data FIS has the following layout: 33222222222211111111119876543210 1098765432109876543210 Reserved (0) 0 Reserved (0) R R R Reserved (0) FIS Type (46h) ... N Dwords of data ... (1 to 2048 Dwords) n Figure 5.9 Data FIS (Bidirectional) layout The Data FIS is used for data transfers between the host system and device. 5.2.3.8 PIO Setup - Device to Host 0 Error Status R I D Reserved (0) FIS Type (5Fh) 1 Dev / Head Cyl High Cyl Low Sector Number Reserved (0) 2 Cyl High (exp) Cyl Low (exp) Sector Num (exp) (0) 3 E_Status Reserved (0) Sector Count (exp) Sector Count 4 Reserved (0) Transfer Count 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-E293 5-19

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5.2
Logical Interface
C141-E293
5-19
5.2.3.7 Data - Host to Device or Device to Host (Bidirectional)
This Data FIS has the following layout:
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
8 7 6 5 4 3
2
1
0
Reserved (0)
Reserved (0)
RRR
Reserved (0)
FIS Type (46h)
0
...
...
N Dwords of data
(1 to 2048 Dwords)
n
Figure 5.9
Data FIS (Bidirectional) layout
The Data FIS is used for data transfers between the host system and device.
5.2.3.8 PIO Setup - Device to Host
Error
Status
R
I
D
Reserved (0)
FIS Type (5Fh)
0
Dev / Head
Cyl High
Cyl Low
Sector Number
1
Reserved (0)
Cyl High (exp)
Cyl Low (exp)
Sector Num (exp) (0)
2
E_Status
Reserved (0)
Sector Count (exp)
Sector Count
3
Reserved (0)
Transfer Count
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