Intel CONTROLLERS 413808 - Manual (Page 194)

Intel
®
413808 and 413812—Address Translation Unit (PCI-X)
Intel ® 413808 and 413812 I/O Controllers in TPER Mode
Developer’s Manual October 2007
194 Order Number: 317805-001US
15:8 FFH
Bus Number - This register is read for diagnostic purposes only. It indicates the number of the bus
segment for the device containing this function. The function uses this number as part of its Requester
ID and Completer ID. For all devices other than the source bridge, each time the function is addressed
by a Configuration Write transaction, the function must update this register with the contents of AD[7:0]
of the attribute phase of the Configuration Write, regardless of which register in the function is
addressed by the transaction. The function is addressed by a Configuration Write transaction when all of
the following are true:
1. The transaction uses a Configuration Write command.
2. IDSEL is asserted during the address phase.
3. AD[1:0] are 00b (Type 0 configuration transaction).
4. AD[10:08] of the configuration address contain the appropriate function number.
7:3 1FH
Device Number - This register is read for diagnostic purposes only. It indicates the number of the device
containing this function, i.e., the number in the Device Number field (AD[15:11]) of the address of a
Type 0 configuration transaction that is assigned to the device containing this function by the connection
of the system hardware. The system must assign a device number other than 00h (00h is reserved for
the source bridge). The function uses this number as part of its Requester ID and Completer ID. Each
time the function is addressed by a Configuration Write transaction, the device must update this register
with the contents of AD[15:11] of the address phase of the Configuration Write, regardless of which
register in the function is addressed by the transaction. The function is addressed by a Configuration
Write transaction when all of the following are true:
1. The transaction uses a Configuration Write command.
2. IDSEL is asserted during the address phase.
3. AD[1:0] are 00b (Type 0 configuration transaction).
4. AD[10:08] of the configuration address contain the appropriate function number.
2:0 000
2
Function Number - This register is read for diagnostic purposes only. It indicates the number of this
function; i.e., the number in the Function Number field (AD[10:08]) of the address of a Type 0
configuration transaction to which this function responds. The function uses this number as part of its
Requester ID and Completer ID.
Table 83. PCI-X Status Register - PCIXSR (Sheet 2 of 2)
Bit Default Description
PCI
IOP
Attributes
Attributes
28 24 20 16 12 8 4 0 31
rv
rv
rv
rv
rc
rc
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
ro
rc
rc
ro
ro
ro
ro
ro
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
rw
ro
ro
ro
ro
ro
ro
ro
Attribute Legend:
RV = Reserved
PR = Preserved
RS = Read/Set
RW = Read/Write
RC = Read Clear
RO = Read Only
NA = Not Accessible
Register Offset
+0D4H