Intel BXM80536NC1500E Ficha de datos Pagina 14

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14 Intel
®
Celeron
®
M Processor Datasheet
Low Power Features
BPRI# control for address and control input buffers
Dynamic on-die termination disabling
Low VCCP (I/O termination voltage)
The Intel Celeron M processor incorporates the DPWR# signal that controls the data bus input
buffers on the processor. The DPWR# signal disables the buffers when not used and activates
them only when data bus activity occurs, resulting in significant power savings with no
performance impact. BPRI# control also allows the processor address and control input buffers to
be turned off when the BPRI# signal is inactive. The On-Die termination on the processor FSB
buffers is disabled when the signals are driven low, resulting in additional power savings. The low
I/O termination voltage is on a dedicated voltage plane independent of the core voltage, enabling
low I/O switching power at all times.
2.3 Processor Power Status Indicator (PSI#) Signal
The Intel Celeron M processor incorporates the PSI# signal that is asserted when the processor is in
a low power (Deep Sleep ) state. This signal is asserted upon Deep Sleep entry and deasserted upon
exit. PSI# can be used to improve the light load efficiency of the voltage regulator, resulting in
platform power savings and extended battery life.
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