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Purpose
1.1 Purpose
The TFP201 EVM can be used to evaluate the TFP201 performance and de-
vice parameters, while acting as a guide for high-speed board layout. The
board allows the designer the ease of connecting directly from the output of
an existing system to the input of the flat panel display through a DVI connec-
tor. The board receives encoded serial data sent over three differential pairs
and one clock signal over a fourth differential pair that deserializes the data.
Parallel data and a clock signal are provided to an onboard transmitter, which
reserializes the data and the outputs to the connector, and then sends to the
digital connector of the display.
1.2 EVM Basic Function
The Texas Instruments TFP201 EVM kit is used to evaluate the performance
and design of the TFP201 using an existing system with a DVI interface. The
board allows the designer to connect to a video card where the data and clock
are serialized and transmitted along four differential pairs. The receiver then
deserializes the data, providing 24 bits (48 bits in 2 pix/clk) of data and a clock.
The receiver than sends the data to an onboard transmitter that reserializes
the data and outputs the four differential pairs through the DVI connector to the
display. The TFP201EVM will support up to SXGA resolutions.
Overall, the board is designed and optimized to support high-speed operation.
In general, the board impedance should be controlled to 50 Ω and impedance
mismatches should be kept to a minimum by designing the component pad
size to be as close as possible to the width of the connecting transmission line.
In addition, to reduce board skew, trace lengths should be matched as closely
as possible.
Some features offered by this board include:
1-2
PCB and DVI cable are designed for high-speed signal integrity.
The PCB can be configured for additional power supply options.
All input/output signals are accessible.
PC Tx
3.3 V
Supply
TFP201
EVM
Digital CRT / FPD
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