DMA
Activate - Device to Host FIS(39h):
31
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30
|
29
|
28
|
27
|
26
|
25
|
24
|
23
|
22
|
21
|
20
|
19
|
18
|
17
|
16
|
15
|
14
|
13
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12
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11
|
10
|
9
|
8
|
7
|
6
|
5
|
4
|
3
|
2
|
1
|
0
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0
|
Reserved
|
Reserved
|
R
|
R
|
R
|
R
|
PM
Port
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FIS
Type (39h)
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FIS
Type - Set to a value of 39h. Defines the rest of
the FIS fields. Defines the length of the FIS as one Dword.
PM
Port –When an endpoint device is attached via a Port
Multiplier, specifies the device port address that the FIS is received from. This
field is set by the Port Multiplier. Endpoint devices shall set this field to
0h.
R – Reserved – shall be cleared to zero.
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