Features; Power-On Configuration Options; Clock Control And Low Power States; Power-On Configuration Option Signals - Intel CORE 2 DUO E4000 - DATASHEET 3-2008 Datasheet

Features

6 Features
6.1

Power-On Configuration Options

Several configuration options can be configured by hardware. The processor samples
the 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.
Table 36.

Power-On Configuration Option Signals

Output tristate
Execute BIST
Disable dynamic bus parking
Symmetric agent arbitration ID
RESERVED
NOTES:
1. Asserting this signal during RESET# will select the corresponding option.
Address signals not identified in this table as configuration options should not
2.
be asserted during RESET#.
Disabling of any of the cores within the processor must be handled by
3.
configuring the EXT_CONFIG Model Specific Register (MSR). This MSR will allow
for the disabling of a single core.
6.2

Clock Control and Low Power States

The processor allows the use of AutoHALT and Stop Grant states to reduce power
consumption by stopping the clock to internal sections of the processor, depending on
each particular state. See
power states.
Datasheet
Configuration Option
Figure 29
Table 36.
1 2
Signal
,
SMI#
A3#
A25#
BR0#
A[8:5]#, A[24:11]#, A[35:26]#
for a visual representation of the processor low
3
,
93