42 Intel
®
E7520 Memory Controller Hub (MCH) Datasheet
Register Descriptions
3.5.1 VID – Vendor Identification (D0:F0)
Address Offset: 00 – 01h
Access: RO
Size: 16 Bits
Default: 8086h
The VID register contains the vendor identification number. This 16-bit register combined with the
Device Identification register uniquely identifies any PCI device. Writes to this register have no
effect.
3.5.2 DID – Device Identification (D0:F0)
Address Offset: 02 – 03h
Access: RO
Size: 16 Bits
Default: 3590h
This 16-bit register combined with the Vendor Identification register uniquely identifies any PCI
device. Writes to this register have no effect.
C8 – C9h REMAPLIMIT Remap Limit Address Register R/W 0000h
CA – CBh REMAPOFFSET Remap Offset R/W 0000h
CC – CDh TOM Top of Memory Register R/W 0000h
CE – CFh EXPECBASE PCI Express Enhanced Config Base Address R/WO E000h
D0h CACHECTL Write Cache Control Register RO, R/WS 00h
DE – DFh SKPD Scratchpad Data R/W 0000h
F4h DEVPRES1 Device Present 1 Register RO, R/W 18h
F5 MCHTST MCH Test Register RO, R/W 01h
Table 3-2. MCH Control PCI Configuration Register Map (D0:F0) (Sheet 2 of 2)
Offset Mnemonic Register Name Access Default
Bit Field
Default &
Access
Description
15:0 8086h
RO
Vendor Identification (VID). The PCI standard identification for Intel.
Bit Field
Default &
Access
Description
15:0 3590h
RO
Device Identification Number (DID). This is a 16-bit value assigned to the MCH
Host-HI Bridge Function 0.