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Evaluation Board for Quad T1/E1 Applications — LXD386
Developer Manual 5
1.0 General Description
The LXD386 evaluation board is a versatile tool for engineers designing T1/E1 short haul
applications using the LXT386.
The evaluation board operates in one of two modes: Software (Host) mode or Hardware mode. In
Software mode, the device is controlled with the PC based configuration and monitoring software
through an i8051 microcontroller interface. In Hardware mode, the device and channel controls are
set using shorting blocks and DIP switches located on the LXD386 evaluation board.
The evaluation board provides banana jacks for each channel’s line interface to allow connection of
a T1/E1 pattern generator/analyzer. A connector is also provided for each channel’s framer or back-
end ASIC interface.
1.1 Features
• Software and Hardware controllable
• ZIF LQFP socket for easy swapping of LXT386
• Banana jacks for power and line interfaces
• 10-pin connectors for framer/ASIC interface
• 8-pin connector for IEEE 1149.1 compliant JTAG boundary scan port
• LED indicators for LOS alarm
• On-board 2.048/1.544 MHz reference clock oscillator
• Switches and shorting blocks for Hardware mode operation
• Compatible with Intel external i8051 microcontroller board
• PC-based software for ease of use
• Socketed transformer and termination components for easy experimentation
• Built-in overvoltage protection for line interface and power supply