Intel CONTROLLERS 413808 - Manual (Page 487)

Intel ® 413808 and 413812 I/O Controllers in TPER Mode
October 2007 Developer’s Manual
Order Number: 317805-001US 487
System Controller (SC) and Internal Bus Bridge—Intel
®
413808 and 413812
7.2.2 Internal Bus Requester IDs
Each of the initiator/requester on the 4138xx has an assigned unique ID, which helps
identify an initiator when returning read data and for the purpose of logging transaction
errors. Table 329 lists the encoded initiator IDs.
Table 329. Intel
®
413808 and 413812 I/O Controllers in TPER Mode Initiator IDs
Internal Bus Initiator Initiator ID
Reserved 0000
2
Intel XScale ® processor 0 (coreID = 0) 0001
2
Intel XScale ® processor 1 (coreID = 1) 0010
2
ATU-X 0011
2
ATU-E 0100
2
Revered 0101
2
Revered 0110
2
Messaging Unit a
a. The Messaging Unit acts as internal bus initiator only for issuing MSI or MSI-X writes to the ATUE or ATUX.
0111
2
Revered 1000
2
SMBus 1001
2
Revered 1010
2
Reserved 1011
2
through 1111
2