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參數(shù)資料
| 型號： | MPM21CUA550B |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 550 MHz, MICROPROCESSOR, XMA |
| 封裝： | MMC-2 |
| 文件頁數(shù)： | 25/64頁 |
| 文件大?。?/td> | 826K |
| 代理商： | MPM21CUA550B |
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Celeron
Processor Mobile Module MMC-2
at 700 MHz, 650 MHz, 600 MHz, 550 MHz, 500 MHz, and 450 MHz
243357-005
Datasheet
25
RESET# assertion will cause the processor to immediately initialize itself, but the processor will
stay in the Quick Start state after initialization until STPCLK# is deasserted.
4.4.1.5
HALT/Grant Snoop State
The processor will respond to snoop transactions on the PSB while in the Auto Halt, Stop Grant, or
Quick Start state. When a snoop transaction is presented on the system bus, the processor will enter
the HALT/Grant Snoop state. The processor will remain in this state until the snoop has been
serviced and the PSB is quiet. After the snoop has been serviced, the processor will return to its
previous state. If the HALT/Grant Snoop state is entered from the Quick Start state, then the input
signal restrictions of the Quick Start state still apply in the HALT/Grant Snoop state (except for
those signal transitions that are required to perform the snoop).
4.4.1.6
Sleep State
Intel mobile modules do not support the Sleep state.
The Sleep state is a very low power state in which the processor maintains its context and the phase
locked loop (PLL) maintains phase lock. The Sleep state can only be entered from the Stop Grant
state. After entering the Stop Grant state the SLP# signal can be asserted, causing the processor to
enter the Sleep state. The SLP# signal is not recognized in the Normal state or the Auto Halt state.
The processor can be reset by the RESET# signal while in the Sleep state. If RESET# is driven
active while the processor is in the Sleep state, then SLP# and STPCLK# must immediately be
driven inactive to ensure that the processor correctly initializes itself.
Input signals (other than RESET#) may not change while the processor is in or transitioning into or
out of the Sleep state. Input signal changes at these times will cause unpredictable behavior. Thus,
the processor is incapable of snooping or latching any events in the Sleep state.
While in the Sleep state the processor can enter its lowest power state, the Deep Sleep state.
Removing the processor’s input clock puts the processor in the Deep Sleep state. PICCLK may be
removed in the Sleep state.
4.4.1.7
Deep Sleep State
The Deep Sleep state is the lowest power mode that the processor can enter while maintaining its
context. Stopping the BCLK input to the processor enters the Deep Sleep state— while the
processor is in the Sleep state or the Quick Start state. For proper operation, the BCLK input should
be stopped in the low state.
The processor will return to the Sleep state or the Quick Start state from the Deep Sleep state when
the BCLK input is restarted. Due to the PLL lock latency, there is a 30.0-
s delay after the clocks
have started before this state transition happens. PICCLK may be removed in the Deep Sleep state.
PICCLK should be designed to turn on when BCLK turns on when transitioning out of the Deep
Sleep state.
The input signal restrictions for the Deep Sleep state are the same as for the Sleep state, except that
RESET# assertion will result in unpredictable behavior.
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