FW82801EB Intel, FW82801EB Datasheet - Page 140

no-image

FW82801EB

Manufacturer Part Number
FW82801EB
Description
Manufacturer
Intel
Datasheet

Specifications of FW82801EB

Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FW82801EB
Manufacturer:
INTEL
Quantity:
20 000
Part Number:
FW82801EB SL73Z
Manufacturer:
INTEL
Quantity:
238
Part Number:
FW82801EB(SL73Z)
Manufacturer:
INTEL
Quantity:
20 000
Functional Description
140
Table 53. Configuration Bits Reset by RTCRST# Assertion
Note: Both the GPI and SAFEMODE strap techniques to clear CMOS require multiple steps to
Note: Clearing CMOS, using a jumper on VccRTC, must not be implemented.
Using a GPI to Clear CMOS
A jumper on a GPI can also be used to clear CMOS values. BIOS would detect the setting of this
GPI on system boot-up, and manually clear the CMOS array.
Using the SAFEMODE Strap to Clear CMOS
A jumper on AC_SDOUT (SAFEMODE strap) can also be used to clear CMOS values. BIOS
would detect the setting of the SAFE_MODE status bit (D31:F0: Offset D4h bit 2) on system
boot-up, and manually clear the CMOS array.
implement. The system is booted with the jumper in new position, then powered back down. The
jumper is replaced back to the normal position, then the system is rebooted again. The RTCRST#
jumper technique allows the jumper to be moved and then replaced, all while the system is
powered off. Then, once booted, the RTC_PWR_STS can be detected in the set state.
FREQ_STRAP[3:0]
AIE
AF
PWR_FLR
AFTERG3_EN
RTC_PWR_STS
PRBTNOR_STS
PME_EN
RI_EN
NEW_CENTURY_STS
INTRD_DET
TOP_SWAP
RTC_EN
BATLOW_EN
Bit Name
GEN_STS
RTC Reg B
RTC Reg C
GEN_PMCON_3
GEN_PMCON_3
GEN_PMCON_3
PM1_STS
GPE0_EN
GPE0_EN
TCO1_STS
TCO2_STS
GEN_STS
PM1_EN
GPE0_EN
Default State
Intel
I/O space
I/O space
PMBase + 00h
PMBase + 2Ah
PMBase + 2Ah
TCOBase + 04h
D31:F0:D4h
D31:F0:A4h
D31:F0:A4h
D31:F0:A4h
TCOBase + 06h
D31:F0:D4h
PMBase + 02h
PMBase + 2Ah
®
82801EB ICH5 / 82801ER ICH5R Datasheet
Register
Location
11:8
13
10
10
11
11
5
5
1
0
2
8
7
0
Bit(s)
1111b
0
0
0
0
1
0
0
0
0
0
0
0
0

Related parts for FW82801EB