AMD ADA3400AEP4AX Datasheet download pdf (Page 48)

PID: 30430 Rev 3.51 March 2006 AMD Athlon™ 64 Processor Power and Thermal Data Sheet

48AMD Athlon™ 64 Processor

1. Tcase max is the maximum case temp erature specification which is a phy sical value in degrees Celsius. This value

is programmed into Rev D and later processors. Refer to the appropriate functional data sheet, and the

THERMTRIP Status Register in the BIOS and Kernel Developer’s Guide for AMD Athlon™ 64 and

AM D Opteron™ Processors, order# 26094.

2. Tcontrol max (maximum control temperature) is a non physical temperature on an arbitrary scale that can be used

for sy stem thermal management policies. Tcontrol max rep resents the value at which the p rocessor has reached

Tcase max when measuring the thermal diode with a dual sourcing current temperature sensor. Refer to the

appropriate functional data sheet, and the THERMTRIP Status Register in the BIOS and Kernel Developer’s

Guide for AMD Athlon™ 64 and AMD Opteron™ Processors, order# 26094.

3. The VID_VDD voltage is the VID[4:0] requested VDD supply level. Refer to the appropriate functional data

sheet for details.

4. Thermal Design Power (TDP) is measured under the conditions of Tcase Max, IDD Max, and VDD=VID_VDD,

and include all power dissipated on-die from VDD, VDDIO, VLDT, VTT, and VDDA.

5. Assumes Tcase max, max P-state VID_VDD, clock divider set to 32.

6. Assumes 50°C, min P-state VID_VDD, clock divider set to 32.

7. Assumes 35°C, VDD, VDDA, and VLDT supplies are off, VDDIO and VTT are powered, memory in self-

refresh mode and DDR SDRAM interface tri-stated except CKE pins. Refer to the appropriate functional data

sheet for comp lete VDDIO and VTT p ower supply sp ecifications.

8. Thermal Design Power dissipated by the processor VDDIO, VTT, VLDT, and VDDA power planes only.

9. Thermal Design Power dissipated by the processor VDDIO and VTT power planes only.

10. Refer to the AM D Athlon™ 64 Processor Desktop Power Roadmap, order #26882, for IDD M ax and Thermal

Design Power requirements for future processor revisions.

11. Imp lementation of this P-state is op tional in BIOS.

12. Assumes VDDIO = 2.6 V and VTT = VDDIO / 2. Refer to the appropriate functional data sheet for complete

VDDIO and VTT p ower sup p ly sp ecifications.

13. Tcase max is programmed during device manufacturing with part-specific values for Rev E and later processors,

and can be any valid Tcase max value in the range specified for the corresponding OPN.

14 Thermal Design Power (TDP) and IDD max for Rev E and later p rocessors are the limits at the highest Tcase max

in the specified range for the corresponding OPN. Products will conform to the TDP and IDD Max limits at all

valid voltages. The relationship of Tcase max and Thermal Profile to TDP for a specific device is defined in

Notes:

Table 8.

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AMD ADA3400AEP4AX Datasheet Page 48