RG82855GMESL72L Datasheet, PDF (170/213 Pages) Intel Corporation – Intel® 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)

Electrical Characteristics
R
Symbol
Parameter
Min
Max
Unit Notes
VCCAHPLL,
Power supply for the Host PLL, Power Supply for the -0.3
1.65
V
VCCAGPLL,
Hub PLL, Power supply for the Display PLL A, Power
VCCADPLLA, supply for the Display PLL B, respectively
VCCADPLLB
Intel 855GME GMCH Only
VCC
1.35 V Core Supply Voltage with respect to VSS
-0.3
1.65
V
VCCHI
1.35 V Hub Interface Supply Voltage with respect to
-0.3
1.65
V
VSS
VCCASM
(DDR333
SDRAM)
1.35 V DDR SDRAM System Memory Logic Supply
-0.3
1.65
V
Voltage (not connected to Core) with respect to VSS
VCCAHPLL,
Power supply for the Host PLL, Power Supply for the -0.3
1.65
V
VCCAGPLL,
Hub PLL, Power supply for the Display PLL A, Power
VCCADPLLA, supply for the Display PLL B, respectively
VCCADPLLB
NOTES:
1.Functionality is not guaranteed for parts that exceed Tdie temperature above 105 °C. Full performance
may be affected if the on-die thermal sensor is enabled. Please refer to the Intel®
852GM/855GM/855GME Chipset Mobile Thermal Design Guide for supplementary details.
2.Possible damage to the GMCH may occur if the GMCH temperature exceeds 150 °C. Intel does not
guarantee functionality for parts that have exceeded temperatures above 150 °C due to spec
violation.
8.2
Thermal Characteristics
The Intel 855GM/855GME GMCH is designed for operation at die temperatures between 0°C and
105 °C. The thermal resistance of the package is given in Table 44.
Table 44. Intel^® 855GM/855GME GMCH Package Thermal Resistance
Parameter
Ψ_jt (°C/Watt)**
Θ_ja (°C/Watt)**
NOTE: ** Estimate
Airflow Velocity in Meters/Second
0 m/s
0.5
20.0
1 m/s
1.8
17.3
170
Datasheet