Intel Intel Core2 Extreme QX6850 HH80562XJ0808M Data Sheet

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Datasheet

The Extended HALT Snoop State is used in conjunction with the new Extended HALT 

state. If Extended HALT state is not enabled in the BIOS, the default Snoop State 

entered will be the HALT Snoop State. Refer to the sections below for details on HALT 

Snoop State, Stop Grant Snoop State and Extended HALT Snoop State.

The processor will respond to snoop transactions on the FSB while in Stop-Grant state 

or in HALT Power Down state. During a snoop transaction, the processor enters the 

HALT Snoop State:Stop Grant Snoop state. The processor will stay in this state until the 

snoop on the FSB has been serviced (whether by the processor or another agent on the 

FSB). After the snoop is serviced, the processor will return to the Stop Grant state or 

HALT Power Down state, as appropriate.

The Extended HALT Snoop State is the default Snoop State when the Extended HALT 

state is enabled via the BIOS. The processor will remain in the lower bus ratio and VID 

operating point of the Extended HALT state.

While in the Extended HALT Snoop State, snoops are handled the same way as in the 

HALT Snoop State. After the snoop is serviced the processor will return to the Extended 

HALT state.