Lattice 7:1 LVDS User Manual

June 2007
Introduction
The Lattice 7:1 LVDS Video Demo Kit is a set of boards intended to bring RGB video data into the LatticeECP2™
FPGA where it can be processed and transmitted to an output display. It is intended to be used as a reference
design and to demonstrate the capabilities of the LatticeECP2 FPGA in video processing applications.
The complete kit consists of up to five boards. The heart of the kit is the LatticeECP2 Advanced Evaluation Board,
featuring a LatticeECP2-50 FPGA device. The kit is optionally available without this board.
The other four boards feature the required I/O interfaces to complete the demonstration. These are described in
more detail below.
About This Guide
This document includes descriptions of the design of the boards, the design of the IP for the LatticeECP2™ FPGA,
the items required to run the demonstration, and how to connect the boards and the cables for the demo.
Additional Resources
Additional resources related to the Lattice 7:1 LVDS Video Demo Kit, including updated documentation, HDL
source and bitstream programming files for the LatticeECP2 FPGA, a user's guide for the LatticeECP2 Advanced
Evaluation Board, and other related materials can be downloaded from the Lattice web site at: www.lattices-
emi.com/boards. Navigate to the page for the Lattice 7:1 LVDS Video Demo Kit, and see the "documents and
downloads" link on the left side of the page.
7:1 Video Demonstration Setup and Design
Figure 1 is an overview of the connection between the boards, the required cables, and a block diagram of the
demo design implemented in LatticeECP2-50. The video signals are color-coded to indicate the different I/O stan-
dards including TMDS (pink), LVCMOS/LVTTL (orange), and LVDS (yellow).
Figure 1. Block Diagram of the Lattice 7:1 LVDS Video Demo Kit Setup
Board #3
60-pin
connection
V
H
D
M
TMDS
Receiver
(TI TFP401A )
DVI
DVI Cable
Desktop PC MDR-26 Channel-Link Cable
DVD Player
ATSC Tuner
DVD
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Board #1 (or #4)
LatticeECP2 Advanced Evaluation Board
LatticeECP2-50 Device
V V
H H
D D
R
M M
Gain
Control
R
RGB to YCbCr Converter
Y
Contrast / Brightness / Hue /
Saturation Adjustments
Y
YCbCr to RGB Converter
R
R
Lattice 7:1 LVDS Video Demo Kit
LVDS 7:1 Rx
Deserializer
G B
Gain Gain
Control Control
G B
Cb Cr
Cb Cr
G B
OSD
G B
LVDS 7:1 Tx
Serializer
1
User's Guide
Technical Note TN1134
TMDS signals
LVCMOS/LVTTL signals
LVDS signals
MDR-26 Channel-Link Cable
DVI Cable
Board #1 Board #2
V V
H H
D D
M M
connection
LCD Display
DVI
TMDS
Driver
(TI TFP410)
V
H
D
M
60-pin
tn1134_01.2