Intel 4 2.26 GHz BX80532PE2260D User Manual

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Several configuration options can be configured by hardware. The Pentium 4 processor on 
0.13 micron process samples hardware configuration at reset, on the active-to-inactive transition of 

RESET#. For specifications on these options, refer to 

The sampled information configures the processor for subsequent operation. These configuration 
options cannot be changed except by another reset. All resets reconfigure the processor; for reset 
purposes, the processor does not distinguish between a “warm” reset and a “power-on” reset.

1. Asserting this signal during RESET# will select the corresponding option.

The use of AutoHALT, Stop-Grant, and Sleep states is allowed in Pentium 4 processor on 
0.13 micron process-based systems to reduce power consumption by stopping the clock to internal 
sections of the processor, depending on each particular state. See 

 for a visual 

representation of the processor low power states.

This is the normal operating state for the processor.

Output tristate

SMI#

Execute BIST

INIT#

In Order Queue pipelining (set IOQ depth to 1)

A7#

Disable MCERR# observation

A9#

Disable BINIT# observation

A10#

APIC Cluster ID (0-3)

A[12:11]#

Disable bus parking

A15#

Disable Hyper-Threading Technology

A31#

Symmetric agent arbitration ID

BR0#