FW82801EB Intel, FW82801EB Datasheet - Page 404

• Manufacturer Part Number: FW82801EB
• Manufacturer: Intel

Specifications of FW82801EB

• Lead Free Status / RoHS Status: Not Compliant

LPC Interface Bridge Registers (D31:F0)
9.11.2
9.11.3
9.11.4
404
TCO_TMR—TCO Timer Initial Value Register
I/O Address:
Default Value:
Lockable:
TCO_DAT_IN—TCO Data In Register
I/O Address:
Default Value:
Lockable:
TCO_DAT_OUT—TCO Data Out Register
I/O Address:
Default Value:
Lockable:
Bit
7:6
5:0
Bit
7:0
Bit
7:0
Reserved
TCO Timer Initial Value — R/W. This field provides the value that is loaded into the timer each time
the TCO_RLD register is written. Values of 0h–3h are ignored and should not be attempted. The
timer is clocked at approximately 0.6 seconds, and this allows timeouts ranging from 2.4 seconds to
38 seconds.
TCO Data In Value — R/W. This data register field is used for passing commands from the OS to
the SMI handler. Writes to this register will cause an SMI and set the SW_TCO_SMI bit in the
TCO1_STS register.
TCO Data Out Value — R/W. This data register field is used for passing commands from the SMI
handler to the OS. Writes to this register will set the TCO_INT_STS bit in the TCO_STS register. It
will also cause an interrupt, as selected by the TCO_INT_SEL bits.
TCOBASE +01h
04h
No
TCOBASE +02h
00h
No
TCOBASE +03h
00h
No
Description
Intel
Description
Description
Attribute:
Size:
Power Well:
Attribute:
Size:
Power Well:
Attribute:
Size:
Power Well:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
R/W
8-bit
Core
R/W
8-bit
Core
R/W
8-bit
Core