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5.1 Intel 915PM North Bridge(6)
CRT DAC Signals
Signal Name
Type
Description
RED
O
RED Analog Video Outpu t:
A
This signal is a CRT Analog video output from the internal color
palette DAC.
RED#
O
RED# Analog Outpu t:
A
This signal is an analog video output from the internal color palette
DAC. This signal is used to provide noise immunity.
GREEN
O
GREEN Analog Video Output:
A
This signal is a CRT Analog video output from the internal color
palette DAC.
GREEN#
O
GREEN# Analog Outpu t:
A
This signal is an analog video output from the internal color palette
DAC. This signal is used to provide noise immunity.
BLUE
O
BLUE Analog Video Output:
A
This signal is a CRT Analog video output from the internal color
palette DAC.
BLUE#
O
BLUE# Analog Output:
A
This signal is an analog video output from the internal color palette
DAC. This signal is used to provide noise immunity.
REFSET
O
Resistor Se t:
A
Set point resistor for the internal color palette DAC. A 256- Ω ± 1%
resistor is required between REFSET and motherboard ground.
HSYNC
O
CRT Horizontal Synchronization:
HVCMOS
This signal is used as the horizontal sync (polarity is programmable)
or "sync interval".
VSYNC
O
CRT Vertical Synchronizatio n:
HVCMOS
This signal is used as the vertical sync (polarity is programmable).
80
50QMA
N/B Maintenance
80
50QMA
N/B Maintenance
Analog TV-out Signals
Signal Name
Type
Description
TVDAC_A
O
TVDAC Channel A Output:
A
TVDAC_A supports the following:
Composite: CVBS signal
Component: Chrominance (Pb) analog signal
TVDAC_B
O
TVDAC Channel B Output:
A
TVDAC_B supports the following:
S-Video: Luminance analog signal
Component: Luminance (Y) analog signal
TVDAC_C
O
TVDAC Channel C Output:
A
TVDAC_C supports the following:
S-Video: Chrominance analog signal
Component: Chrominance (Pr) analog signal
TV_IRTNA
O
Current Return for TVDAC Channel A:
A
Connect to ground on board
TV_IRTNB
O
Current Return for TVDAC Channel B:
A
Connect to ground on board
TV_IRTNC
O
Current Return for TVDAC Channel C:
A
Connect to ground on board
TV_REFSET
O
TV Resistor set:
A
TV Reference Current uses an external resistor to set internal
reference voltage levels. A 5-k §Ù ± 0.5% resistor is required
between REFSET and motherboard ground.
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