The Unabridged Pentium 4 IA32 Processor Genealogy

Chapter 50. Pentium^® 4 FSB Snoop Phase

The Previous Chapter

This chapters provides a detailed description of the Request Phase of a FSB transaction. It includes:

• Introduction to the Request Phase.

• The Source Synchronous Strobes.

• The Request Phase Parity.

• Request Phase Parity Checking.

• ChipSet Request Phase Parity Checking and Reporting.

• Processor Request Phase Parity Checking and Reporting.

• The Request Phase Signal Group is Multiplexed.

• Introduction to the Transaction Types.

• The Contents of Request Packet A.

• 32-bit vs. 36-bit Addresses.

• The Contents of Request Packet B.

This Chapter

This chapter provides a detailed description of the Snoop Phase of a FSB transaction. It includes:

• Agents Involved in the Snoop Phase.

• The Snoop Phase Has Two Purposes.

• The Snoop ...