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Distributor of VersaLogic Corporation: Excellent Integrated System Limited
Datasheet of VL-CBR-2012 - 20" 24-BIT LVDS CABLE
Contact us: sales@integrated-circuit.com Website: www.integrated-circuit.com
P
R
OWER
EQUIREMENTS
The VL-EPMs-21 requires only +5V (±5%) for proper operation. The voltage required for the
RS-232 ports is generated with an on-board DC/DC converter. Variable low-voltage supply
circuits provide power to the CPU and other on-board devices.
The exact power requirement of the VL-EPMs-21 depends on several factors, including memory
configuration, CPU speed, peripheral connections, and the type and number of expansion
modules and attached devices. For example, driving long RS-232 lines at high speed can increase
power demand.
P
C
OWER
YCLING
To ensure reliable power up when cycling power, you must allow the power to remain off for a
minimum of three seconds. This ensures that all internal clocks and phased-lock loop (PLL)
circuitry have settled before powering back on. The three second minimum is a requirement of
the Intel chipset architecture and not the design of the VL-EPMs-21.
In order to reduce boot failures when power is cycled in less than three seconds, the system's
watchdog timer is enabled by default during the power-on self-test (POST) pre-boot sequence.
With the
POST Watchdog
will cause the watchdog to timeout and reboot the board. If disabled, a hang caused by quick
power cycling will cause a boot failure.
SUMIT +5V S
TANDBY
The +5V power inputs to the VL-EPMs-21 are common to one another; for example, +5Vsb is
connected to the J11 input +5V pins.
L
B
ITHIUM
ATTERY
Warning!
To prevent shorting, premature failure, or damage to the lithium battery, do not
place the board on a conductive surface such as metal, black conductive foam, or
the outside surface of a metalized ESD protective pouch. The lithium battery may
explode if mistreated. Do not recharge, disassemble or dispose of in fire. Dispose
of used batteries promptly.
Normal battery voltage should be at least +3V. If the voltage drops below +2V, contact the
factory for a replacement (part number HB3/0-1). The life expectancy under normal use is
approximately 10 years.
CPU
The Intel Z5xx Atom is a low power, single core processor with Hyperthreading
clock rates of 1.6 GHz (VL-EPMs-21g) and 1.33 GHz (VL-EPMs-21h), with a 533 MT/s FSB
and 512 KB cache. The CPU has a typical power consumption of 2.2W. The Intel System
Controller Hub (SCH) chipset features DDR2 SDRAM support, integrated LVDS and display
control, USB 2.0/1.1, PATA/ IDE, and PCI Express, among other interfaces.
VL-EPMs-21 Reference Manual
parameter enabled in CMOS Setup, a hang condition during POST
P
OWER
System Features
TM
support and
21
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