430 datasheet(11/71 Pages) INTEL

11 / 71 page

Datasheet

Low Power Features

2.1

Clock Control and Low Power States

The Celeron M processor supports the C1/AutoHALT, C1/MWAIT, Stop Grant, Sleep, and

Deep Sleep for power management. See Figure 1 for a visual representation of package

level low-power states for the Celeron M processor. Package low power states include

Normal, Stop Grant, Stop Grant Snoop, Sleep and Deep Sleep. Refer Figure 2 for a

visual representation of the core low-power states for the Celeron M processor.

The Celeron M processor implements two software interfaces for requesting low power

states: MWAIT instruction extensions with sub-state hints and P_LVLx reads to the

ACPI P_BLK register block mapped in the processor’s I/O address space. The P_LVLx

I/O reads are converted to equivalent MWAIT C-state requests inside the processor and

do not directly result in I/O reads on the processor FSB. The monitor address does not

need to be setup before using the P_LVLx I/O read interface. The sub-state hints used

for each P_LVLx read can be configured through the IA32_MISC_ENABLES model

specific register (MSR).

If the processor encounters a chipset break event while STPCLK# is asserted, it asserts

the PBE# output signal. Assertion of PBE# when STPCLK# is asserted indicates to

system logic that the processor should return to the Normal state.

NOTE: (1)AutoHALT or MWAIT/C1

Table 1.

Coordination of Core-Level Low Power States at the Package Level for the

Celeron M Processor

Core States

Package States

Normal

C1(1)

Normal

Stop Grant

Deep Sleep

Figure 1.

Package-Level Low Power States

Stop

Grant

Snoop

Normal

Stop

Grant

Deep

Sleep

STPCLK# asserted

Snoop

serviced

Snoop

occurs

Sleep

SLP# asserted

SLP# de-asserted

DPSLP# asserted

DPSLP# de-asserted

STPCLK# de-asserted

430 数据表(PDF) 11 Page - Intel Corporation

430 数据表(HTML) 11 Page - Intel Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

数据表下载

链接网址

430 数据表(PDF) 11 Page - Intel Corporation

430 数据表(HTML) 11 Page - Intel Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

数据表 下载

链接网址

数据表下载