Intel D2500 DF8064101055400 Data Sheet
Product codes
DF8064101055400
18
Datasheet - Volume 1 of 2
2.1
CPU Legacy Signal
Table 2-6. CPU Legacy Signal (Sheet 1 of 2)
Signal Name
Description
Direction
Type
EXTBGREF
External Band gap Reference. SOC and Core Debug feature.
I
Core
Analog
Analog
HV_GPIO_RCOMP
RCOMP for 3.3V GPIO pins: 50 ohm 1% PD to VSS.
N/A
Analog
MV_GPIO_RCOMP
RCOMP for DFX_GPIO_GRPx pins: 50 ohm 1% PD to VSS.
N/A
Analog
PBE#
When STPCLK# is not asserted, t
he Intel Atom Processor
D2000 series and N2000 series
processor will always deassert
PBE#.
The Intel Atom Processor D2000 series and N2000 series
processor is always allowed to use PBE to request a break to C0 -
even if in C4 and in Deep Power Down Technology (code named
C6)
O
Core
Open
Open
Drain
INIT#
INIT# (Initialization), when asserted, resets integer registers
inside the processor without affecting its internal caches or
floating-point registers. CPU then restarts at the reset vector.
Snoops are handled during INIT# assertion.
I
Core
CMOS
CMOS
INTR /LINT00
Interrupt Request/Local APIC Interrupt 0: When the APIC is
disabled, the LINT0 signal becomes INTR, a maskable
asynchronous interrupt request signal.
This signal (and NMI/LINT1) must be software configured via BIOS
This signal (and NMI/LINT1) must be software configured via BIOS
programming of the APIC register space to be used either as NMI/
INTR or LINT[1:0]. Because the APIC is enabled by default after
Reset, operation of these pins as LINT[1:0] is the default
configuration.
I
Core
CMOS
CMOS
NMI/ LINT10
Non-Maskable Interrupt Request/Local APIC Interrupt 1: When the
APIC is disabled, the LINT1 signal becomes NMI, a non-maskable
asynchronous interrupt request signal.
This signal (and INTR/LINT0) must be software configured via
This signal (and INTR/LINT0) must be software configured via
BIOS programming of the APIC register space to be used either as
NMI/INTR or LINT[1:0]. Because the APIC is enabled by default
after Reset, operation of these pins as LINT[1:0] is the default
configuration.
I
Core
CMOS
CMOS
CPUPWRGOOD
CPUPWRGOOD (Power Good) is a processor input. The processor
requires this signal to be a clean indication that the clocks and
power supplies are stable and within their specifications. ‘Clean’
implies that the signal will remain low (capable of sinking leakage
current), without glitches, from the time that the power supplies
are turned on until they come within specification. The signal must
then transition monotonically to a high state. Rise time and
monotonicity requirements are shown in
Specifications. CPUPWRGOOD can be driven inactive at any time,
but clocks and power must again be stable before a subsequent
rising edge of CPUPWRGOOD. It must also meet the minimum
pulse width specification.
The CPUPWRGOOD signal must be supplied to the processor; it is
The CPUPWRGOOD signal must be supplied to the processor; it is
used to protect internal circuits against voltage sequencing issues.
It should be driven high throughout boundary scan operation.
I
Core
CMOS
CMOS