Teknor Industrial Computers TEK-CPCI-1000, Техническое справочное руководство

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Onboard Subsystems
2-3
2.2 ONBOARD CONNECTORS
Two connectors are used to drive various signals to the front plate:
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Parallel Port (J3)
- A flat cable is required to output the parallel signals from the
onboard connector to a standard 25-pin DSUB connector mounted on the front plate.
The Parallel Port is compliant with Standard, EPP and ECP modes.
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Multi-function connector (J2)
- Speaker, keyboard inhibit, download, reset, and
hard disk activity functions are available through the J2 connector.
Features are described as follows:
Speaker
An 8ohm speaker can be directly connected. The power
stage is integrated onboard.
Keyboard inhibit Keyboard inhibit function is used to enable or disable the
keyboard.
Download Download function is used to transfer information from a
remote computer to the Flash disk through a serial link.
Reset
A normally open push button can be used to reset the board.
Reset interface is open drain, thus external logic is not
required.
Hard disk activity LED can be used to indicate read and write operations on
the hard disk.
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System Memory - The TEK-CPCI-1000 provides four 72-pin vertical SIMM sockets
to support from 8MB to 512MB of DRAM system memory. The memory is divided
into two banks referred as Bank 0 and Bank 1.
Each bank can be populated separately, but must be populated with the same memory
capacity.