MX86250 Datasheet, PDF (18/25 Pages) List of Unclassifed Manufacturers – THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR

INDEX
MX86250
Internal RAMDAC Related Interface Pins:
Pin Name
SVREF
SCOMP
SIREF
SR
SG
SB
Pin No. Type Description
4I
This pin is the Voltage Reference of 1.2V for internal DAC and Monitor Sence logic.
It must be connected with a 0.1u capacitor to AVCC of RAMDAC.
161 I
This pin is the Compensation input for internal DAC. It must be connected with a
0.1u capacitor to AVCC of RAMDAC.
2
I
This pin is the Current Reference.
206 O This pin is the analog output of the pixel color Red component to monitor. It has a
voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with 75 ohm double
loads.
207 O This pin is the analog output of the pixel color Green component to monitor. It has
a voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with 75 ohm
double loads.
208 O This pin is the analog output of the pixel color Blue component to monitor. It has a
voltage level of 0.0V(blank) to 0.7V(full scale) when terminated with 75 ohm double
loads.
Media Port and Feature Connector Related Interface Pins:
Pin Name
P0
P1
P2
P3
P4
P5
P6
P7
Pin No. Type Description
141 IO P[7:0] is the pixel or video data bus from/to external Feature Connector or Video
142
Module Interfaces.
143
144
145
For 8-bit Feature Connector or VAFC, this is a bidirectional pixel data bus.
146
When EVIDEO# is low, it functions as inputs. The pixel data from external display
147
or video card will be passed to the internal RAMDAC for display.
148
If EVIDEO# is high, the internal RAMDAC uses pixel data internally generated for
display. In this case, if PA output control for DPMS, which is defined in bit 6 of
register 3?5/26, is set to normal operation, GUI will drive out pixel data.
Otherwise, it will tristate the output.
If VMI is used, P[7:0] is the video data inputs.
This chip supports SAA7110 video decoder and CL480 MPEG decoder interfaces.
For SAA7110 interfaces, P[7:0] is the lower byte of the 16-bit video data inputs.
For CL480 interfaces, it's the 8-bit video data inputs.
P/N:PM0387
REV. 1.1, JUL 26, 1996
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