Advanced Configuration and Power Interface Specification

Eject Device List (_EDL) object 332
Ejection Dependent Device (_EJD) object 333
ejection mechanisms 331
Else (Alternate Execution) 829
ElseIf (Alternate/Conditional Execution) 829
embedded controller
boot resources table 156
burst mode 641
device ID 256
device object 507
event control example 94
multiple 635
operations 99
queuing events 245
region control method 383
embedded controller interface
ACPI Namespace objects 656
algorithms 644
ASL code, device 657
bi-directional communications 636
Burst flag 640
command interrupt model 644
command register (EC_SC (W)) 640
command set 640
commands, restricted 656
configurations, additional 638
data register (EC_DATA) 640
definition 19
firmware requirements 642
Input Buffer Full (IBF) flag 640, 645
objects 656
OEM-definable values 645
Output Buffer Full (OBF) flag 639, 645
registers 639
shared 636, 638
SMBus host controller 645
SMBus notification header (OS_SM-
B_EVT) 642
SMBus protocol descriptions 650
SMBus registers 646
specifications 635
emergency shutdown 49
enable bits
corresponding status bits 96
resetting 96
symbol 61
enable register 45
Enable/Disable Output Switch (_DOS) 970
encoding
AML 908
Definition Blocks 215
object names, ASL 785
tables 105
End Dependent Functions resource descriptor
format 346
end tag resource descriptor format 349
EndDependentFn End Dependent Functions
Descriptor Macro) 830
energy conservation See power management
Enumerate All Devices Attached to the Display
Adapter (_DOD) 971
enumeration, enabling 664
errors, fatal 837
Ethernet adapters See network devices
Event (Declare Event Synchronization Object)
831
Event data type, ASL 790, 794
events
alarm 82
AML code handler 60
battery 569
button 76
enable register 45
fixed feature 20
fixed handling 243
general model 45
general-purpose registers 20, 94
hardware 64
interrupt 64, 84
link status 959
OS-transparent 65
power button 77
power button override 78
programming model 241
query 95
shared 66
Version 6.0 April, 2015 993