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Detailed hardware description
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For connector details, see page
Trusted platform module
On the APOLLO V1Ix board variants, an Atmel AT97SC3201 trusted platform module
(TPM) conforming to the Trusted Computing Platform Architecture (TCPA) Rev 1.1
specification is available as a factory build option. Please contact the Eurotech sales
team for further information (see page
) for details.
The APOLLO V2Ix board has an Atmel AT97SC3203 TPM conforming to the TPM 1.2
specification fitted as standard. The BIOS on the APOLLO V2Ix board also performs
basic initialization of the TPM so that it can be used at an OS/application level.
Power supply
The APOLLO board is powered by a standard ATX power supply. Connections for the
ATX 20-way power connector are shown on page
. The board incorporates several
power supplies to provide the power requirements of the on-board functions and support
for ACPI low power sleep states.
As a minimum, the APOLLO requires the ATX power supply, 5V, 5V standby, 3.3V and
12V power rails. The –5V is not used and the –12V is only required if a PCI card used
with the APOLLO requires this power rail. The ATX power supply ‘power good’ and
‘power supply ON’ signals should also be connected.
A combination of full power and standby voltages are generated on the board. The
required voltage rails are1.05V, 1.25V, 1.35V, 1.5V, 1.8V, 2.5V and a variable CPU voltage
(IMVP-IV). A combination of linear and switch mode regulators are used to provide these
rails.
The BIOS has built-in power management, which can be enabled at the
within the PhoenixBIOS setup program (see page
). The power management software
can control various aspects of the board. You can choose maximum power savings (to
conserve system power), maximum performance (which uses more power), or to specify
custom settings.
Most small ATX supplies have a minimum load requirement. At times, the
APOLLO board does not meet this requirement and an additional load needs
to be added to the system for the supply to turn on correctly.