原标题：ST STEVAL-CCH002V2 HDMI和视频开关解决方案

　　ST公司的STEVAL-CCH002V2是HDMI和视频开关演示板,支持STHDMI002A, STDVE103A, STDVE001A, STMAV340和STHDMI002A数字开关/均衡器,以及STMAV335和TMAV340模拟开关,包括有16字符x2线数字背光LCD,VGA输入和输出连接器,S视频输入和输出连接器, Y Pb Pr输入和输出连接器以及CVBS输入和输出连接器.本文介绍了演示板主要特性和详细的电路图.

　　STEVAL-CCH002V2: HDMI and video switches demonstration board This user manual explains the functions and operation of a demonstration board which supports STHDMI002A, STDVE103A, STDVE001A, STMAV340, and STHDMI002A digital switches/equalizers, and STMAV335 and STMAV340 analog switches, and also different analog buffers and protection devices for analog and digital lines.

　　The objective of this demonstration board is to display the capabilities of ST’s video switches and buffers and also the appropriate use of signal line protection devices, which have been exhaustively used in this demonstration board at all I/O lines, analog video lines, and high speed transition minimized differential signaling (TMDS) digital signals. The board consists of different input/output connectors and supports various signal formats - VGA (RGB), Y Pb Pr (component video), DVI-I Analog, CVBS (composite video), and S-video in the analog domain and HDMI, DVI-I digital in the digital domain. Demonstration of the various devices is done through appropriate jumper settings on the demonstration board. A 16 character x 2 line backlit alphanumeric LCD, driven by a pre-programmed microcontroller, is also present, which senses the selection lines and displays the active device/signals, switched on, on the LCD.

　　图1.STEVAL-CCH002V2外形图

　　STEVAL-CCH002V2主要特性:

　　■ 16-character x 2-line alphanumeric backlit LCD

　　■ VGA input and output connectors

　　■ S-video input and output connectors

　　■ Y Pb Pr input and output connector sets

　　■ CVBS input and output connectors

　　■ DVI-I input connector

　　■ Analog and digital switch selection jumper sets

　　■ Power supply section

　　■ Reset switch

　　■ RoHS compliant