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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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VPC3232D Scheda tecnica(PDF) 72 Page - Micronas |
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VPC3232D Scheda tecnica(HTML) 72 Page - Micronas |
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72 / 78 page  VPC 323xD, VPC 324xD ADVANCE INFORMATION 72 Micronas 5.1. Application Note: VGA mode with VPC 3215C In 100 Hz TV applications it can be desirable to display a VGA-signal on the TV. In this case a VGA-graphic card delivers the H, V and RGB signals. These signals can be feed "directly" to the backend signal process- ing. The VPC can generate a stable line locked clock for the 100 Hz system in relation to the VGA sync sig- nals. While the V-sync is connected to the VGAV pin directly, the H-sync has to be pulse-shaped and amplitude adjusted until it is connected to one of the video input pins of the VPC. The recommended circuitry to filter the H sync is given in the figure below. Fig. 5–1: Application circuit for horizontal VGA-input 680 nF Video Input VPC H 31kHz 270 Ω 47pF 540 Ω 1N4148 BC848B 100 Ω 1k Ω +5V analog 1N4148 2k Ω GND analog GND analog |
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