82870P2P64H2 Datasheet, PDF (81/217 Pages) –

Register Description
R
3.3.1.21
MDTA—Alternate Memory Access Data Port Register (Device 31)
Offset:
54–57h
Default Value: 00000000h
Attribute:
Size:
R/W
32 bits
When the "Enable PCI Configuration Space Access to Hot Plug Registers" bit in the
Miscellaneous Hot Plug Configuration Register is set, this register becomes functional. Otherwise,
this register is reserved, read only (0s).
Bits
Description
31:0
Memory Access Port (DTA): This field contains hot plug read data from the offset in the index
register at offset 50h, and is the location for hot plug write data.
3.3.1.22
XID—PCI-X Identifiers Register (Device 31)
Offset:
64–65h
Default Value: 0007h
Attribute:
Size:
RO
16 bits
Bits
Description
15:8 Next Pointer (XNPTR): This field points to the next capabilities list pointer (empty)
7:0 Capability ID (XCID): Capabilities ID indicates PCI-X.
3.3.1.23
XCR—PCI-X Command Register (Device 31)
Offset:
66–67h
Default Value: 0000h
Attribute:
Size:
RO
16 bits
Bits
15:0 Reserved
Description
Intel^® 82870P2 P64H2 Datasheet
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