
Coppertail Product Specification
MT8LLN22NCNE.fm – Rev. 1, Pub. 2/02
92
2002, Micron Technology Inc.
PRELIMINARY
MT8LLN22NCNE
COPPERTAIL
NOTE: 1. Field is standby powered and unaffected by SB_POWEROK or P_RST#. Reset only with RSMRST#.
Power Management 1 Control Register
NOTE: 1. Field is standby powered and unaffected by SB_POWEROK or P_RST#. Reset only with RSMRST#.
4:1
Reserved.
R/O
000b
0
TMR_EN. Timer carry interrupt enable bit. When set an SCI or
SMI event is generated anytime TMR_STS is set.
R/W
0
1
ADDRESS: ACPI_BASE + 04h
SYMBOL: PM1_CNT
BITS
DESCRIPTION
PROPERTIES
RESET
NOTES
15:14
Reserved.
R/O
00b
13
SLP_EN. Sleep Enable. Setting this bit causes the system the
sequence into the sleeping state associated with the SLP_TYP
field.
W/O
0
1
12:10
SLP_TYP - Defines the type of hardware sleeping state the
system enters when the SLP_EN bit is set. This field may also
be used by BIOS and OS to determine the type of sleep state
the system is resuming from.
000: S0
001: S1
011: S3
100: S4
101: S5
R/W
000b
1
9:3
Reserved.
R/O
000000b
2
GBL_RLS. Global Release. This bit is used by ACPI software to
raise event to BIOS software by generating SMI# and passing
execution control to the BIOS. BIOS software has correspond-
ing enable and status bits to control its ability to receive ACPI
events. The GBL_RLS bit is set by ACPI driver to indicate a
release of the global lock and the setting of the pending bit
in the FACS memory structure.
W/O
0
1
BM_RLD. Bus Master Reload Enable. When Set, this bit allows
generation of a bus master request to cause any processor in
the C3 state to transition to C0 state. When clear, bus master
request has no effect on processors in C3 state.
R/W
0
SCI_EN. SCI Enable. Selects whether power management
events in the PM1 Fixed Feature register and General Purpose
0 register generate an SCI or SMI#. When set, SCI is selected.
When clear, SMI# is selected.
R/W
0
Power Management 1 Enable Register
ADDRESS: ACPI_BASE + 02h
SYMBOL: PM1_EN
BITS
DESCRIPTION
PROPERTIES
RESET
NOTES