Datasheet

Electrical Specifications
42 Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
Table 2-17. FMB 155W/185W Current Specifications for the Intel
®
Itanium
®
Processor
9300 Series
Symbol Parameter Max Units Notes
I
CC_CORE
I
CC
for core 180 A
I
CC_CORE_TDC
Thermal Design Current for Core 131 A 1
Notes:
1. ICC_CORE_TDC is the sustained (DC equivalent) current that the processor core is capable of drawing indefinitely and should be
used for the Ararat voltage regulator temperature assessment. The Ararat voltage regulator is responsible for monitoring its
temperature and asserting the VR_FAN_N, VR_THERMALERT_N, VR_THERMTRIP_N signals sequentially to inform the processor
and platform of a thermal excursion. Of the three signals, only VR_THERMALTERT_N is monitored by the processor. Please see
the Ararat Voltage Regulator Module Design Guide for further details. The processor is capable of drawing ICC_CORE_TDC
indefinitely. Refer to Figure 2-9 for further details on the average processor current draw over various time durations. This
parameter is based on design characterization and is not tested.
I
CC_CORE_STEP
Max Load step for core 95 A 2
2. During system power on, the pulse inrush (ICC_CORE_STEP) can be as high as 130A peak-to-peak.
d
ICC_CORE/dt
Slew rate for core at Ararat output 154 A/us
I
CC_UNCORE
I
CC
for uncore 50 A
I
CC_UNCORE_TDC
Thermal Design Current for Uncore 43 A 3
3. ICC_UNCORE_TDC is the sustained (DC equivalent) current that the processor uncore is capable of drawing indefinitely and
should be used for the Ararat voltage regulator temperature assessment. The Ararat voltage regulator is responsible for
monitoring its temperature and asserting the VR_FAN_N, VR_THERMALERT_N, VR_THERMTRIP_N signals sequentially to inform
the processor and platform of a thermal excursion. Of the three signals, only VR_THERMALTERT_N is monitored by the processor.
Please see the Ararat Voltage Regulator Module Design Guide for further details. The processor is capable of drawing
ICC_UNCORE_TDC indefinitely. This parameter is based on design characterization and is not tested.
I
CC_UNCORE_STEP
Max Load step for uncore 22 A 4
4. During system power on, the pulse inrush (ICC_UNCORE_STEP) can be as high as 40A peak-to-peak.
dI
CC_UNCORE/dt
Slew rate for uncore at Ararat output 75 A/us
I
CC_IO
I
CC
for processor I/O 22 A 5
5. The ICC_IO current specification applies to the total current from VCCIO pins.
I
CC_Analog
I
CC
for processor Analog 4 A
I
CC33_SM
I
CC33
for main supply 200 mA
Figure 2-9. Processor I
CC_CORE
Load Current versus Time
0.01 100 10001010.1
ITDC
IMax
Time Duration (us)
Sustained Current (A)