Datasheet
81
Signal Description
6.12
Processor Power Signals
Table 6-32.Processor Power Signals (Sheet 1 of 3)
Signal Name
Description
Direction/Buffer
Type
VCC
Processor core power rail.
Ref
VTT
(VTT0 and VTT1)
Processor I/O power rail (1.05 V). VTT0 and
VTT1 should share the same VR
Ref
VDDQ
DDR3 power rail (1.5 V)
Ref
VCCPLL
Power rail for filters and PLLs (1.8 V)
Ref
ISENSE
Current Sense from an Intel® MVP6.5
Compliant Regulator to the processor core.
I
A
PROC_DPRSLPVR
Processor output signal to Intel MVP-6.5
controller to indicate that the processor is in
the package C6 state.
O
CMOS
PSI#
Processor Power Status Indicator:
This
signal is asserted when the processor core
current consumption is less than 15 A.
Assertion of this signal is an indication that
the VR controller does not currently need to
provide ICC above 15 A. The VR controller
can use this information to move to a more
efficient operating point. This signal will de-
assert at least 3.3 µs before the current
consumption will exceed 15 A. The minimum
PSI# assertion and de-assertion time is 1
BCLK.
O
Asynchronous CMOS
