Intel 4 620 JM80547PG0722MM Data Sheet
Product codes
JM80547PG0722MM
Datasheet
23
Electrical Specifications
2.9
FSB Frequency Select Signals (BSEL[2:0])
The BSEL[2:0] signals are used to select the frequency of the processor input clock (BCLK[1:0]).
defines the possible combinations of the signals and the frequency associated with each
combination. The required frequency is determined by the processor, chipset, and clock
synthesizer. All agents must operate at the same frequency.
synthesizer. All agents must operate at the same frequency.
Only the Pentium 4 processor Extreme Edition currently operates at a 1066 MHz FSB frequency
(selected by a 266 MHz BCLK[1:0] frequency). The Pentium 4 Processor 6xx sequence operate at
a 800 MHz FSB Frequency (selected by a 200 MHz BCLK[1:0] frequency) Individual processors
will only operate at their specified FSB frequency.
(selected by a 266 MHz BCLK[1:0] frequency). The Pentium 4 Processor 6xx sequence operate at
a 800 MHz FSB Frequency (selected by a 200 MHz BCLK[1:0] frequency) Individual processors
will only operate at their specified FSB frequency.
For more information about these signals, refer to
. Contact your Intel representative for
further details and documentation.
2.10
Absolute Maximum and Minimum Ratings
specifies absolute maximum and minimum ratings. Within functional operation limits,
functionality and long-term reliability can be expected.
At conditions outside functional operation condition limits, but within absolute maximum and
minimum ratings, neither functionality nor long-term reliability can be expected. If a device is
returned to conditions within functional operation limits after having been subjected to conditions
outside these limits, but within the absolute maximum and minimum ratings, the device may be
functional, but with its lifetime degraded depending on exposure to conditions exceeding the
functional operation condition limits.
minimum ratings, neither functionality nor long-term reliability can be expected. If a device is
returned to conditions within functional operation limits after having been subjected to conditions
outside these limits, but within the absolute maximum and minimum ratings, the device may be
functional, but with its lifetime degraded depending on exposure to conditions exceeding the
functional operation condition limits.
At conditions exceeding absolute maximum and minimum ratings, neither functionality nor long-
term reliability can be expected. Moreover, if a device is subjected to these conditions for any
length of time then, when returned to conditions within the functional operating condition limits, it
will either not function, or its reliability will be severely degraded.
term reliability can be expected. Moreover, if a device is subjected to these conditions for any
length of time then, when returned to conditions within the functional operating condition limits, it
will either not function, or its reliability will be severely degraded.
Although the processor contains protective circuitry to resist damage from static electric discharge,
precautions should always be taken to avoid high static voltages or electric fields.
precautions should always be taken to avoid high static voltages or electric fields.
Table 2-6. BSEL[2:0] Frequency Table for BCLK[1:0]
BSEL2
BSEL1
BSEL0
FSB Frequency
L
L
L
266 MHz
L
H
L
200 MHz