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MAX4397 Datasheet(PDF) 18 Page - Maxim Integrated Products |
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MAX4397 Datasheet(HTML) 18 Page - Maxim Integrated Products |
18 / 30 page ![]() Power Supplies and Bypassing The MAX4397 features single 5V and 12V supply opera- tion and requires no negative supply. The +12V supply V12 is for the SCART switching function. For pin V12, place all bypass capacitors as close as possible with a 10µF capacitor in parallel with a 0.1µF ceramic capacitor. Connect all VAUD pins together to +5V and bypass with a 10µF electrolytic capacitor in parallel with a 0.47µF low- ESR ceramic capacitor to audio ground. Bypass VAUD pins with a 0.1µF capacitor to audio ground. Bypass AUD_BIAS to audio ground with a 10µF electrolytic in parallel with a 0.1µF ceramic capacitor. Bypass VDIG with a 0.1µF ceramic capacitor to digital ground. Bypass each VVID to video ground with a 0.1µF ceramic capacitor. Connect VVID in series with a 200nH ferrite bead to the +5V supply. Layout and Grounding For optimal performance, use controlled-impedance traces for video signal paths and place input termina- tion resistors and output back-termination resistors close to the MAX4397. Avoid routing video traces par- allel to high-speed data lines. The MAX4397 provides separate ground connections for video, audio, and digital supplies. For best perfor- mance, use separate ground planes for each of the ground returns and connect all three ground planes together at a single point. Refer to the MAX4397 evalu- ation kit for a proven circuit board layout example. Audio/Video Switch for Dual SCART Connectors 18 ______________________________________________________________________________________ REGISTER ADDRESS (HEXADECIMAL) BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 00h TV volume bypass ZCD TV volume control TV audio output mute 01h VCR volume control Not used Not used VCR audio selection TV audio selection 02h Not used 03h Not used 04h Not used 05h Not used 06h TV_R/C_IN clamp RGB gain TV G and B video switch TV video switch 07h Not used RF_CVBS_ OUT switch TV_Y/ CVBS_OUT switch TV fast blank (fast switching) TV_R/C_OUT ground Set function TV 08h VCR_R/ C_IN clamp Not used Not used Not used ENC_R/ C_IN clamp VCR video switch 09h Not used Not used Not used Not used Not used VCR_R/C_OUT ground Set function VCR 0Ah Not used 0Bh Not used 0Ch Not used 0Dh VCR_Y/ CVBS_OUT enable VCR_R/ C_OUT enable TV_R/C_OUT enable TV_G_OUT enable TV_B_OUT enable TV_Y/ CVBS_OUT enable TVOUT _FS enable RF_CVBS_ OUT enable Table 3. Data Format for Write Mode |
Similar Part No. - MAX4397_V01 |
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Similar Description - MAX4397_V01 |
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