參數資料
型號： 845GE
廠商： Intel Corp.
英文描述： 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)
中文描述： 82845GE圖形和內存控制器中樞（GMCH）和82845PE內存控制器中樞（MCH）
文件頁數： 33/176頁
文件大小： 2661K
代理商： 845GE
Intel
82845GE/82845PE Datasheet
33
Signal Description
2.6
Analog Display (Intel
82845GE only)
Signal Name
Type
Description
HSYNC
O
3.3 V
GPIO
CRT Horizontal Synchronization:
This signal is used as the horizontal sync
(polarity is programmable) or “sync interval”.
VSYNC
O
3.3 V
GPIO
CRT Vertical Synchronization:
This signal is used as the vertical sync (polarity
is programmable).
RED
O
Analog
RED Analog Video Output:
This signal is a CRT Analog video output from the
internal color palette DAC. The DAC is designed for a 37.5
equivalent load on
each signal (e.g., 75
resistor on the board, in parallel with a 75
CRT load).
RED#
O
Analog
RED# Analog Output:
This signal is a truly differential analog video output from
the internal color palette DAC. Refer to the
Intel
Pentium
4 Processor in 478-
Pin Package and Intel
845GE/845PE Chipset Platform Design Guide
for
routing recommendations. This signal is used to provide noise immunity.
GREEN
O
Analog
GREEN Analog Video Output:
This signal is a CRT Analog video output from
the internal color palette DAC. The DAC is designed for a 37.5
equivalent
load on each signal (e.g., 75
resistor on the board, in parallel with a 75
CRT
load).
GREEN#
O
Analog
GREEN# Analog Output:
This signal is a truly differential analog video output
from the internal color palette DAC. Refer to the
Intel
Pentium
4 Processor in
478-Pin Package and Intel
845GE/845PE Chipset Platform Design Guide
for
routing recommendations. This signal is used to provide noise immunity.
BLUE
O
Analog
BLUE Analog Video Output:
This signal is a CRT Analog video output from
the internal color palette DAC. The DAC is designed for a 37.5
equivalent
load on each signal (e.g., 75
resistor on the board, in parallel with a 75
CRT
load).
BLUE#
O
Analog
BLUE# Analog Output:
This signal is a truly differential analog video output
from the internal color palette DAC. Refer to the
Intel
Pentium
4 Processor in
478-Pin Package and Intel
845GE/845PE Chipset Platform Design Guide
for
routing recommendations. This signal is used to provide noise immunity.
REFSET
I
Analog
Resistor Set:
Set point resistor for the internal color palette DAC. A 137
,
1%
resistor is required between REFSET and GND.
DDCA_CLK
I/O
3.3 V
GPIO
Analog DDC Clock:
Clock signal for the I
2
C style interface that connects to
Analog CRT Display.
NOTE:
This signal may need to be level shifted to 5 V.
DDCA_DATA
I/O
3.3 V
GPIO
Analog DDC Data:
Data signal for the I
2
C style interface that connects to
Analog CRT Display.
NOTE:
This signal may need to be level shifted to 5 V.
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PDF描述
845PE 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)
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相關代理商/技術參數
參數描述
845GE MAX-L 制造商:Micro-Star International 功能描述:845GE P4/CELERON 533FSB ATX - Bulk
845GEM-L 制造商:Micro-Star International 功能描述:845GEM-L P4 MATX HYPER-T - Bulk
845GL 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
845GLMS-L 制造商:Micro-Star International 功能描述:845GL UATX P4/CEL 400FSB - Bulk
845GR 制造商:SPC 功能描述:New
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