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Techwell |
mTechwell,Inc.
TW9906/TW9909 Evaluation Board User’s Manual
www.DataSheet4U.cTEoWvUa9sl9ue0ar6’tsi/oTMnWa9nB9uo0aat9l4rdU.com(Rev 1.0)
w.DataSheeTechwell, Inc.
w 408 Plumeria Drive
w omSan Jose, CA 95134
.cURL http://www.techwellinc.com
t4UDisclaimer
eThis document provides technical information for the user. Techwell, Inc. reserves the right to modify the
einformation in this document as necessary. The customer should make sure that they have the most recent data
hsheet version. Techwell Inc. holds no responsibility for any errors that may appear in this document. Customers
Sshould take appropriate action to ensure their use of the products does not infringe upon any patents. Techwell
taInc. respects valid patent rights of third parties and does not infringe upon or assist others to infringe upon such
arights.
www.D1 Version 1.00 3/8/2005
Techwell,Inc.
TW9906/TW9909 Evaluation Board User’s Manual
1. Overview
TW9906 and TW9909 are high quality NTSC, PAL, and SECAM multi-standard video decoder plus
RGB mixing for multimedia applications. The TW9906/TW9909 evaluation board can demonstrate
most of the decoder’s features and allows easy evaluation of the TW9906, TW9909 performance.
Features such as Scaling and Cropping can be easily examined by modifying a few register setting,
switching input and output path can also be changed by a single click of the mouse. The
evaluation board is controlled via a RS-232 serial interface cable from a PC, and an application
software namely SerCon. User can also use a terminal emulator such as Hyper-terminal, all
registers can be manually modified. With TW9909, an OSD menu is also available, together with
on-board push buttons, changing register settings and other features without the need of a PC.
In order to truly explore the capability and performance of the TW9906/TW9909, user is strongly
recommended to use component output (from DAC, default setting).
The main signal flow of the evaluation board is depicted below.
Input
connectors
Decoder
TW9906 or
TW9909
FPGA and
SDRAM
DAC or
Encoder
Output
connectors
2. TW9906_9 Evaluation Board Features
2.1. Input/output
On the board there are CVBS/S-video/Component/SCART input connectors connected to decoder
inputs and CVBS/S-Video/Component output connectors connected to the signals from DAC or
the encoder. Use JP3, JP4, JP5 to select the component outputs between DAC and the encoder.
Default output is from the DAC. CVBS/S-video output is always from the encoder.
INPUTS:
CVBS
S-VIDEO
Components (YPbPr)
SCART
OUTPUTS:
CVBS
S-VIDEO
*Components (YPbPr or RGB)
CSYNC
*Recommended feature for evaluation
CONNECTORS
CON1
CON4
Y/G:CON1, Pb/B:CON2, Pr/R:CON3
CON5
CONNECTORS
CON13
CON12
Y/G: CON9, Pb/B: CON10, Pr/R:CON11
CON8
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