Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 284
Schematics Checklist—Intel
®
EP80579 Integrated Processor Product Line
28.2 Schematic Checklist
s
Table 100. Schematic Checklist (Sheet 1 of 26)
Checklist Items
I/O Type
(Default)
Recommendations Comments
IA-32 core Interface
Global Clock Unit (CRU)
CLKP100 I
Differential positive 100 MHz IA-32
core clock input.
• Connect from CK410 Clock
Generator CPU_0 output
through a 33 Ω ±5% series
resistor.
• Terminate to GND through a 49.9 Ω
±1%
resistor.
Differential (Positive) System Bus Clock
Signal
CLKN100 I
Differential negative 100 MHz IA-32
core clock input.
• Connect from CK410 Clock
Generator CPU_0# output
through a 33 Ω ±5% series
resistor.
• Terminate to GND through a
49.9Ω ±1% resistor
Differential (Negative) System Bus
Clock Signal
Thermal Diode
THERMDA I
• Connect to Anode of Thermal
Diode of temperature
monitoring circuitry if used.
• The Development Board monitors
the temperature of the EP80579
device via the SuperIO chip.
• Couple THERMDA and THERMDC
signals together using 100 pF
5%
50V capacitor.
• Route signals as differential pairs.
Note:
• These signals are used to monitor
and control the EP80579 CPU
temperature. It is used to control
the fan speeds of the EP80579 heat
sink. If this feature is not used, the
heat sink fan can be connected to
operate at a constant speed, and
these signals can be left as no
connect (NC)
THERMDC O
• Connect to Cathode of Thermal
Diode of temperature
monitoring circuitry if used.
Sideband Miscellaneous Signals
CPUSLP_OUT# O
• Can monitor signal using an
LED
• Pull up signal to Platform 3.3V
(VCC3) power supply using
4.7KΩ ± 5% resistor if used.
Note:
• This signal can be left as a no
connect (NC) if not used.
• This signal can be exposed via a
testpoint for debug purposes if not
used.
INIT33V_OUT# O
• Connect to FWH INT# pin.
• Pull up signal to Platform 3.3V
(VCC3) power supply using
4.7KΩ ± 5% resistor if used.
• This signal can be monitored
via an LED
Note:
• This signal can be left as a no
connect (NC) if not used.
• This signal can be exposed via a
testpoint for debug purposes if not
used.

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English