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AVPRO5002C-CGT Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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AVPRO5002C-CGT Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers |
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2 / 23 page  AVPro ® 5002C Dual SCART A/V Switch 2 FUNCTIONAL DESCRIPTION The 5002C is an audio/video switching device. The device integrates both audio and video drivers so that it can directly drive the SCART interface. The use of a -5 volt supply eliminates the need for AC coupling capacitors on the audio outputs and the SCART audio inputs. All programmable functions of the device are controlled through a standard I 2 C serial interface and a set of internal registers. The device will interface to an external video encoder that provides six video outputs. In addition, the 5002C includes two programmable digital outputs and provides inputs for the TV SCART audio/video. SCART VIDEO SWITCHING The device is designed to accept video signals from an auxiliary SCART connector, TV SCART connector, and an external video encoder/DAC device. The devices include a set of analog multiplexers that receive video signals from these sources and allow routing of the signals to the various video outputs. The video output drivers have a nominal gain of 2.0 V/V to allow for a series resistance of 62 ohms prior to the 75 ohm termination. A block diagram of the video switching function is provided in Figure 1. Details of the register settings are provided in the section titled “Serial Port Register Tables”. Figure 1: 5002C Video switching block diagram Enc_B Enc_G Enc_R Aux_YCout Aux_B Aux_G Aux_YC TV_B TV_G TV_R TV_YCout EBLANK ABLANK BLANK Enc_YC Aux_Cout Aux_R Mod_YC Enc_C Enc_Y TV_Fnc Mux VGen Aux_Fnc Comparator 0V 2V Mux Mux Mux Mux Mux Mux Mux Aux_Cin TV_YCin Gain Mux Enc2_Y Enc2_C |
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