W83877TF Datasheet, PDF (145/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
765
43
21
0
SCI_EN
BM_RLD
GBL_RLD
Reserved
Reserved
Reserved
Reserved
Reserved
Bit
Name
0
SCI_EN
1
BM_RLD
2
GBL_RLS
3-7 Reserved
Description
Selects the power management event to be either an SCI or an SMI interrupt.
When this bit is set, then the power management events will generate an SCI
interrupt. When this bit is reset and SMI_EN bit is set, then the power
management events will generate an SMI interrupt.
This is the bus master reload enable bit. If this bit is set and BM_CNTRL is
set, an SCI interrupt is raised.
The global release bit. This bit is used by the ACPI software to raise an event
to the BIOS software. The BIOS software has a corresponding enable and
status bit to control its ability to receive the ACPI event. Setting GBL_RLS
sets BIOS_STS, and it generates an SMI interrupt if BIOS_EN is also set.
Reserved. These bits always return a value of zero.
8.4.6 Power Management 1 Control Register 2 (PM1CTL2)
Register Location:
<CR33>+5H System I/O Space
Default Value:
00h
Attribute:
Read/write
Size:
8 bits
765
43
21
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Bit
Name
Description
0-7 Reserved Reserved. These bits always return a value of zero.
- 119 -
Publication Release Date: March 1998
Version 0.61