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82845GL Datasheet(PDF) 39 Page - Intel Corporation

No. de pieza 82845GL
Descripción Electrónicos  Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
PDF  193 Pages
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Fabricante Electrónico  INTEL [Intel Corporation]
Página de inicio  http://www.intel.com
Logo INTEL - Intel Corporation

82845GL Datasheet(HTML) 39 Page - Intel Corporation

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Intel® 82845G/82845GL/82845GV GMCH Datasheet
39
Signal Description
2.12
Reset States
2.12.1
Full and Warm Reset States
All register bits assume their default values during full reset. A full reset occurs when PCIRST#
(GMCH RSTIN#) is asserted and PWROK is deasserted. A warm reset occurs when PCIRST#
(GMCH RSTIN#) is asserted and PWROK is also asserted. The following table describes the reset
states.
Figure 2-3. Full and Warm Reset Waveforms
1 ms min
1 ms min
1 ms min
1 ms min
Write on CF9h
ICH4 Power
ICH4 PWROK In
ICH4 PCIRST# Out
GMCH RSTIN# In
GMCH CPURST# Out
GMCH Power
GMCH PWROK In
GMCH Reset State
Unknown
Full Reset
Warm Reset
Running
Warm Reset
Running
Reset State
RSTIN#
PWROK
Full Reset
L
L
Warm Reset
L
H
Does Not Occur
H
L
Normal Operation
H
H



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