Compaq W4000 Manual De Usuario

Technical Reference Guide 

 

  

These systems include power management functions designed to conserve energy. These 
functions are provided by a combination of hardware, firmware (BIOS) and software. The system 
provides the following power management features: 
 

J

 

Intel Pentium III processor with SpeedStep technology 

J

 

ACPI v1.0b compliant (ACPI modes C1, C2, S1, and S3, ) 

J

 

API 1.2 compliant 

J

 

U.S. EPA Energy Star compliant  

 
Table 6-1 shows the comparison in power states.  
 
 
Table 6-1.   System Power States 

 

Table 6-1. 

System Power States

 

G0, S0, D0 

System fully on. OS and application 
is running, all components. 

Maximum N/A  No 

G1, S1, C1, D1 

System on, CPU is executing and 
data is held in memory. Some 
peripheral subsystems may be on 
low power. Monitor is blanked.  

Low 

< 2 sec after 

keyboard or 

pointing device 

action 

No 

G1, S2/3, C2, 

by/ 

D2 (Stand
suspend) 

System on, CPU not executing, 
cache data lost. Memory is holding 
data, display and I/O subsystems on 
low power. 

Low 

< 5 sec. after 

keyboard, 

pointing device, 
or power button 

action 

No 

G1, S4, D3 
(Hibernation) 

 

d to disk for 

Low 

pow

on 

action 

Yes 

System off. CPU, memory, and
most subsystems shut down. 
Memory image save
recall on power up. 

<25 sec. after 

er butt

System off. All components either 
completely shut down or receiving 
minimum po
wake-up.   

<35 sec. after 

er butt

System off (mechanical). No power 
to any internal c
RTC circuit. [1] 

G2, S5, D3

cold

 

wer to perform system 

Minimum 

pow

on 

action 

Yes 

G3 

omponents except 

None —  — 

NOTES:  

  

 

Gn = Global state.

 

Sn = Sleep state. 

 

Cn = ACPI state. 

 

] Actual transition time dependent on OS and/or application software. 

 

 

Dn = PCI state. 
[1] Power cord is disconnected for this condition.  
[2

 

6-5