w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 169
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
w83977atf-AW
Manufacturer:
Winbond
Quantity:
8
Company:
Part Number:
w83977atf-AW
Manufacturer:
MIT
Quantity:
1 000
- Current page: 169 of 207
- Download datasheet (798Kb)
9.0 ACPI REGISTERS FEATURES
The W83977ATF supports both ACPI and legacy power managements. The switch logic of the power
managment block generates an SMI interrupt in the legacy mode and an SCI interrupt in the ACPI
mode. For the legacy mode, the SMI_EN bit is used. If it is set, it routes the power management
events to the SMI interrupt logic. For the ACPI mode, the SCI_EN bit is used. If it is set, it routes
the power management events to the SCI interrupt logic.
configuration register block of logical device A and the SCI_EN bit is located in the PM1 register
block. See the following figure for illustration.
The SMI interrupt is routed to pin SMI , which is dedicated for the SMI interrupt output. Another way
to output the SMI interrupt is to route to pin IRQSER, which is the signal pin in the Serial IRQ mode.
The SCI interrupt can be routed to pin SCI , which is dedicated for the SCI function. Or it can be
routed to one interrupt request pin, which is selected through CR70 bit3-0 of logical device A.
Another way is to output the SCI interrupt to pin IRQSER if Serial IRQ mode is enabled.
Global STBY
Device Trap
Device Idle
PM Timer
Timers
Timer
IRQs
from SCI to SMI
from SMI to SCI
Bus Master SCI
IRQs
SCI_EN
0
1
SMI Logic
SCI Logic
-113 -
IRQs
SMI_EN
State machine
The SMI_EN bit is located in the
Sleep/Wake
SMI output
Publication Release Date:April 1998
SCI output
Logic
Logic
W83977ATF
PRELIMINARY
Revision 0.53
SMI
SCI
WAK_STS
Clock
Control
Related parts for w83977atf
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Winbond H/w Monitoring Ic
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Lpc I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Smbus Gpi/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 Springdale Series Chipset P4 Springdale Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel P4 845 Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Via P4/kt Series Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator For Intel 915/925 Chipsets
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Clock Generator W83195br-120/w83195bg-120 For Intel 915/945 Chipset
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond H/w Monitoring Ic
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Lpc I/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Winbond Smbus Gpi/o
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Pa-risc Embedded Controller
Manufacturer:
Winbond Electronics Corp America
Datasheet:
Part Number:
Description:
Step-less 3-dimm Clock
Manufacturer:
Winbond Electronics Corp America
Datasheet: