521 Supporting Hyper-ThreadingTechnology* Datasheet

Datasheet 7

Contents

Revision History

Revision No. Description Date of Release

-001 • Initial release June 2004

-002

• Added specifications for processor number 550 with PRB = 0

• Added support for Execute Disable Bit capability

• Added Icc Enhanced Auto Halt specifications

• Added support for Thermal Monitor 2

September 2004

-003 • Added specifications for processor number 570 with PRB = 1 November 2004

-004

• Added specifications for processor numbers 571, 561, 551, 541,

531, and 521.

• Modified Table 2-3, “FSB Signal Groups“.

• Added Note 5 to Table 2-18.

• Updated Figure 3-5 Top SIde Marking Example and added

Figure 3-6.

• Minor edits throughout for clarity.

May 2005