82845G Datasheet, PDF (34/193 Pages) Intel Corporation – Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

Signal Description
2.5.1
Intel^® DVO Signal Name to AGP Signal Name Pin Mapping
The 82845G GMCH multiplexes an ADD_Detect signal with the G_PAR signal on the AGP bus.
This signal acts as a strap and indicates whether the interface is in AGP or DVO mode (See
ADD_DETECT signal description for further information). GSBA(7:0) act as straps for an
ADD_ID. When an ADD card is present, ADD_DETECT=0 (DVO mode).
DVO Signal Name
DVOB_D0
DVOB_D1
DVOB_D2
DVOB_D3
DVOB_D4
DVOB_D5
DVOB_D6
DVOB_D7
DVOB_D8
DVOB_D9
DVOB_D10
DVOB_D11
DVOB_CLK
DVOB_CLK#
DVOB_HSYNC
DVOB_VSYNC
DVOB_BLANK#
DVOB_CCLKINT#
DVOB_FLDSTL
DVOBC_RCOMP
MI2CCLK
MI2CDATA
MDVI CLK
AGP Signal Name
GAD_3
GAD_2
GAD_5
GAD_4
GAD_7
GAD_6
GAD_8
GC/BE_0#
GAD_10
GAD_9
GAD_12
GAD_11
GADSTB_0
GADSTB_0#
GAD_0
GAD_1
GC/BE_1#
GAD_13
GAD_14
AGP RCOMP
GIRDY#
GDEVSEL#
GTRDY#
DVO Signal Name
DVOC_D0
DVOC_D1
DVOC_D2
DVOC_D3
DVOC_D4
DVOC_D5
DVOC_D6
DVOC_D7
DVOC_D8
DVOC_D9
DVOC_D10
DVOC_D11
DVOC_CLK
DVOC_CLK#
DVOC_HSYNC
DVOC_VSYNC
DVOC_BLANK#
DVOBC_INTR#
DVOC_FLDSTL
ADDID[7:0]
MDVI DATA
MDDC CLK
MDDC DATA
AGP Signal Name
GAD_19
GAD_20
GAD_21
GAD_22
GAD_23
GC/BE_3#
GAD_25
GAD_24
GAD_27
GAD_26
GAD_29
GAD_28
GADSTB_1
GADSTB_1#
GAD_17
GAD_16
GAD_18
GAD_30
GAD_31
GSBA_[7:0]
GFRAME#
GAD_15
GSTOP#
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Intel^® 82845G/82845GL/82845GV GMCH Datasheet