The Unabridged Pentium 4 IA32 Processor Genealogy

Chapter 51. Pentium^® 4 FSB Response and Data Phases

The Previous Chapter

This chapter provided a detailed description of the Snoop Phase of a FSB transaction. It included:

• Agents Involved in the Snoop Phase.

• The Snoop Phase Has Two Purposes.

• The Snoop Result Signals are Shared, DEFER# Isn't.

• The Snoop Phase Duration Is Variable.

• There Is No Snoop Stall Duration Limit.

• Memory Transaction Snooping.

• The Snoop's Effects on Processor Caches.

• Self-Snooping.

• Non-Memory Transactions Have a Snoop Phase.

This Chapter

This chapter provides a detailed description of the Response and Data Phases of a FSB transaction. It includes:

• The Purpose of the Response Phase.

• The Response Phase Signal Group.

• The Response Phase Start Point.

• The Response Phase End Point.

• The Response ...