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XIO2000 데이터시트(PDF) 71 Page - Texas Instruments

부품명 XIO2000
상세설명  XIO2000 PCI Express to PCI Bus Translation Bridge
PDF  150 Pages
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XIO2000 데이터시트(HTML) 71 Page - Texas Instruments

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Classic PCI Configuration Space
59
November 2005
SCPS097B
4.40 MSI Message Upper Address Register
This register contains the upper 32 bits of the address that a MSI message writes to when a serial IRQ is
detected. If this register contains 0000 0000h, then 32-bit addressing is used; otherwise, 64-bit addressing
is used.
PCI register offset:
68h
Register type:
Read/Write
Default value:
0000 0000h
BIT NUMBER
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RESET STATE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BIT NUMBER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET STATE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.41 MSI Message Data Register
This register contains the data that software programmed the bridge to send when it send a MSI message.
See Table 4−23 for a complete description of the register contents.
PCI register offset:
6Ch
Register type:
Read/Write
Default value:
0000h
BIT NUMBER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET STATE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 4−23. MSI Message Data Register Description
BIT
FIELD NAME
ACCESS
DESCRIPTION
15:4
MSG
RW
System specific message. This field contains the portion of the message that the bridge forwards
unmodified.
3:0
MSG_NUM
RW
Message number. This portion of the message field may be modified to contain the message
number is multiple messages are enable. The number of bits that are modifiable depends on the
number of messages enabled in the message control register.
1 message = No message data bits can be modified (default)
2 messages = Bit 0 can be modified
4 messages = Bits 1:0 can be modified
8 messages = Bits 2:0 can be modified
16 messages = Bits 3:0 can be modified
4.42 Capability ID Register
This read-only register identifies the linked list item as the register for subsystem ID and subsystem vendor
ID capabilities. The register returns 0Dh when read.
PCI register offset:
80h
Register type:
Read-only
Default value:
0Dh
BIT NUMBER
7
6
5
4
3
2
1
0
RESET STATE
0
0
0
0
1
1
0
1



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