82G33 datasheet(358/437 Pages) INTEL

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Functional Description

358

Datasheet

10.4.3

PCI Express* and Internal Graphics Simultaneous

Operation

10.4.3.1

Standard PCI Express* Cards and Internal Graphics

BIOS control of simultaneous operation is needed to ensure the PCI Express is

configured appropriately.

10.4.3.2

Media Expansion Cards (Concurrent SDVO and PCI Express*)

SDVO lane reversal is supported in the (G)MCH. This functionality allows current

SDVO ADD2 cards to work in current ATX and BTX systems instead of requiring a

separate card. The GMCH allows SDVO and PCI Express to operate concurrently on the

PCI Express Port. The card, which plugs into the x16 connector in this case, is called a

Media Expansion card. It uses 4 or 8 lanes for SDVO and up to 8 lanes of standard PCI

Express.

For the GMCH, the only supported PCI Express width when SDVO is present is x1.

This concurrency is supported in reversed and non-reversed configurations. Mirroring /

Reversing is always about the axis.

Table 10-4. Concurrent SDVO / PCI Express* Configuration Strap Controls

Configuration

Description

Slot

Reversed

Strap

SDVO

Present

Strap

SDVO/PCI

Express*

Concurrent

Strap

PCI Express* not reversed

—

PCI Express* Reversed

Yes

—

SDVO (ADD2) not reversed

—

Yes

—

SDVO (ADD2) Reversed

Yes

—

SDVO & PCI Express*

(MEDIA EXPANSION) not

reversed

—

Yes

SDVO & PCI Express*

(MEDIA EXPANSION)

Reversed

Yes

Notes:

The Configuration #s refer to the following figures (no intentional relation to validation

configurations).

Configurations 4, 5, and 6 (required addition of SDVO/PCI Express* Concurrent Strap).

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