Datasheet

Datasheet 27
Electrical Specifications
8. Minimum V
CC
and maximum I
CC
are specified at the maximum processor case temperature
(TCASE) shown in Figure 5-1.
9. This specification refers to the total reduction of the load line due to VID transitions below
the specified VID.
10. Individual processor VID values may be calibrated during manufacturing such that two
devices at the same frequency may have different VID settings.
11. This specification applies to the VCCPLL land.
12. Baseboard bandwidth is limited to 20 MHz.
13. I
CC_TDC
is the sustained (DC equivalent) current that the processor is capable of drawing
indefinitely and should be used for the voltage regulator temperature assessment. The
voltage regulator is responsible for monitoring its temperature and asserting the necessary
signal to inform the processor of a thermal excursion. The processor is capable of drawing
I
CC_TDC
indefinitely. Refer to Figure 2-1 for further details on the average processor current
draw over various time durations. This parameter is based on design characterization and
is not tested.
14. This is the maximum total current drawn from the V
TT
plane by only one processor with R
TT
enabled. This specification does not include the current coming from on-board termination
(R
TT
), through the signal line. Refer to the Voltage Regulator Design Guidelines to
determine the total I
TT
drawn by the system. This parameter is based on design
characterization and is not tested.
15. I
CC_VTT_OUT
is specified at 1.1 V.
16. I
CC_RESET
is specified while PWRGOOD and RESET# are asserted.
17. The processor is intended for dual processor workstations only.
.
NOTES:
1. Processor or Voltage Regulator thermal protection circuitry should not trip for load currents
greater than I
CC_TDC
.
2. Not 100% tested. Specified by design characterization.
Figure 2-2. Processor Load Current versus Time
12 0
12 5
13 0
13 5
14 0
14 5
150
155
16 0
0.01 0.1 1 10 100 1000
Time Duration (s)
Sustained Current (A)