RG82855GMESL72L Datasheet, PDF (112/213 Pages) Intel Corporation – Intel® 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)

Register Description
R
Table 30. For Intel^® 855GME GMCH Configurations and Some Resolution Examples
Straps Read
Through
HPLLCC[2:0]:
D0:F3:Register
Offset C0-C1h,
bits[2:0]
000
001
010
111
FSB
Rate
System
Memory
Frequency
400
MHz
266 MHz
400
MHz
200 MHz
400
MHz
200 MHz
400
MHz
333 MHz
GFX Core
Clock(Low)
GFX Core
Clock (High)
LVDS Port
DVO Port
VGA Port
133 MHz
200 MHz
100 MHz
200 MHz
100 MHz
133 MHz
166 MHz
250 MHz
N/A
1600x1200@6
0 Hz
DCLK = 162
MHz
N/A
1600x1200
@60 Hz
DCLK = 162
MHz
N/A
1400x1050@6
0Hz
DCLK = 108
MHz
N/A
1600x1200@6
0Hz
DCLK = 162
MHz
N/A
1600x1200@ 85
Hz
DCLK = 229 MHz
2048x1536@ 72
Hz
DCLK = 324 MHz
N/A
N/A
1600x1200@85
Hz
DCLK = 229 MHz
2048x1536 @ 75
Hz
DCLK = 340 MHz
N/A
1600x1200@85H
z
DCLK = 229 MHz
2048x1536 @ 72
Hz
DCLK = 324 MHz
N/A
1400x1050 @ 75
Hz
DCLK = 155 MHz
1600x1200 @ 60
Hz
DCLK = 162 MHz
N/A
1600x1200 @ 85
Hz
DCLK = 229 MHz
2048x1536@ 72
Hz
DCLK = 324 MHz
1600x1200 @ 85
Hz
DCLK = 229 MHz
2048x1536
@75Hz
DCLK = 340 MHz
N/A
1400x1050@ 85
Hz
DCLK = 177 MHz
1600x1200 @ 85
Hz
DCLK = 229 MHz
N/A
1600x1200 @ 85
Hz
DCLK = 229 MHz
2048x1536@ 75
Hz
DCLK = 340 MHz
Note:
The maximum calculated display pipe dot clocks were used to select supporting
resolutions/refresh rates from the VESA table. Memory bandwidth, simultaneous functions, and
VGA mode support were not accounted for in determining the resolutions supported. In all cases,
only single pipe was used to determine the resolution supported – LVDS is only supported on a
Single Wide Pipe B, and DVO and VGA resolution.
112
Datasheet