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| 型号： | BXM80536GC2100F |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 2100 MHz, MICROPROCESSOR, CPGA478 |
| 封装： | FLIP CHIP, PGA-478 |
| 文件页数： | 7/84页 |
| 文件大小： | 1488K |
| 代理商： | BXM80536GC2100F |
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Datasheet
15
Low Power Features
2.3
Front Side Bus Low Power Enhancements
The Pentium M processor incorporates the following front side bus (processor system bus) low
power enhancements:
Dynamic FSB Power Down
BPRI# control for address and control input buffers
Dynamic On Die Termination disabling
Low VCCP (I/O termination voltage)
The Pentium 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.
2.4
Processor Power Status Indicator (PSI#) Signal
The Pentium M processor incorporates the PSI# signal that is asserted when the processor is in a
low power (Deep Sleep or Deeper 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. PSI# can also be used to simplify
voltage regulator designs since it removes the need for integrated 100
μs timers required to mask
the PWRGOOD signal during Deeper Sleep transitions. It also helps loosen PWRGOOD
monitoring requirements in the Deeper Sleep state.
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