VersaLogic VL-EBX-37, Справочное руководство

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Introduction
EBX-37 Reference Manual
4
Thermal Considerations
CPU D
IE
T
EMPERATURE
The CPU die temperature is affected by numerous conditions, such as CPU utilization, CPU
speed, ambient air temperature, air flow, thermal effects of adjacent circuit boards, external heat
sources, and many others.
The CPU is protected from over-temperature conditions by several mechanisms.
The CPU will automatically slow down by 50% whenever its die temperature e105°C.
When the temperature falls back below +105°C, the CPU resumes full-speed operation.
As a failsafe, if the CPU die temperature climbs above +115°C, the CPU will turn itself off to
prevent damage to the chip. Note that Intel does not warrant their CPUs in the event of this
occurrence.
M
ODEL
D
IFFERENCES
VersaLogic offers both commercial and industrial temperature models of the VL-EBX-37. The
basic operating temperature specification for both models is shown below.

VL-EBX-37S, A: 0°C to +60°C free air, no airflow

VL- EBX-37E, F: -40°C to +85°C free air
To reliably function at extreme temperatures the extended temperature model specifications
deviate from the standard model in the following ways:

The DRAM interface is slowed. PC3-6400 memory runs at 600 MHz. PC3-8500 memory
runs at 800 MHz.

The DRAM refresh rates are doubled.

The Front Side Bus speed is reduced to 800 MHz.

Maximum processor speed is limited to 1200 MHz.

The graphics core is limited to 400 MHz.
RoHS-Compliance
The VL-EBX-37 is RoHS compliant.
A
BOUT
R
O
HS
In 2003, the European Union issued Directive 2002/95/EC regarding the Restriction of the use of
certain Hazardous Substances (RoHS) in electrical and electronic equipment.
The RoHS directive requires producers of electrical and electronic equipment to reduce to
acceptable levels the presence of six environmentally sensitive substances: lead, mercury,
cadmium, hexavalent chromium, and the presence of polybrominated biphenyls (PBB) and
polybrominated diphenyl ethers (PBDE) flame retardants, in certain electrical and electronic
products sold in the European Union (EU) beginning July 1, 2006.
VersaLogic Corp. is committed to supporting customers with high-quality products and services
meeting the European Union’s RoHS directive.