Intel ICH9 User Manual

25
ICH8/ICH9—NVM Information Guide
1.5 ICH9 Extended Configuration
Ta b l e 21 lists the contents of the extended configuration area. The base address for this
area is contained in the Extended Configuration Pointer. Each entry is defined as a
Dword, where the LSBs [15:0] occupy the lower-address word.
Table 21. NVM Map - Extended Configuration
Note: The extended configuration space in the NVM must not set the PHY reset bit in PHY
Control register (bit 15). If set, the PHY enters an internal initialization loop.
Word Address
(relative to base address)
Used
By
15:8 7:0
00h
01h
HW PHY Extended Configuration Dword 0
…HW…
(2(N-1))h
(2N-1)h
HW PHY Extended Configuration Dword (N-1)
1
1. N = number of PCIe* Dwords as determined in the Extended PCIe* Length field.
(2N)h
(2N+1)h
HW Dock Extended Configuration Dword 0
…HW…
(2N+2L-2)h
(2N+2L-1)h
HW Dock Extended Configuration Dword (L-1)
2
2. M = number of PHY Dwords as determined in the Extended PHY Length field.
(2N+2L)h
(2N+2L+1)h
HW Undock Extended Configuration Dword 0
…HW…
(2N+4L-2)h
(2N+4L-1)h
HW Undock Extended Configuration Dword (L-1)
3
3. L = number of Dock/Undock Dwords as determined in the Extended Dock Length field.

Intel ICH9 Specifications

General

Brand	Intel
Model	ICH9
Category	Switch
Language	English