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TDA9983B Datasheet(PDF) 18 Page - NXP Semiconductors |
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TDA9983B Datasheet(HTML) 18 Page - NXP Semiconductors |
18 / 119 page TDA9983B_1 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 01 — 20 May 2008 18 of 119 NXP Semiconductors TDA9983B 150 MHz pixel rate HDMI transmitter 8.3 Synchronization The TDA9983B can be synchronized with Hsync/Vsync external inputs or with extraction of the sync information from embedded sync (SAV/EAV) codes inside the video stream. 8.3.1 Timing extraction generator This block can extract the synchronization signals Href, Vref and Fref from Start Active Video (SAV) and End Active Video (EAV) in case of embedded synchronization in the data stream. Synchronization signals can be embedded in RGB, YCBCR 4 : 4 : 4, YCBCR 4:2:2 semi-planar (up to 2 × 12-bit), YC BCR 4:2:2 ITU656 and ITU656-like (up to 1 × 12-bit). 8.3.2 Data enable generator The TDA9983B contains a Data Enable (DE) generator; this can generate an internal DE signal for a system which does not provide one. 8.4 Input and output video format Due to the flexible video input formatter, the TDA9983B can accept a large range of input formats. This flexibility allows the TDA9983B to be compatible with the maximum possible number of MPEG decoders. Moreover, these input formats may be changed in many ways (color space converter, upsampler, downsampler and scaler) to be transmitted across the HDMI link. Table 14 gives the possible inputs and outputs. 8.5 Upsampler The incoming YCBCR 4 : 2 : 2 (2 × 12-bit) data stream format could be upsampled into a 12-bit YCBCR 4 : 4 : 4 (3 × 12-bit) data stream by repeating or linearly interpolating the chrominance pixels. Table 14. Use of color space converter, upsampler, downsampler and scaler Input Scaler Output Color space Format Channels Color space Format Channels RGB 4:4:4 3 × 8-bit no scaling RGB 4:4:4 3 × 8-bit no scaling YCBCR 4:2:2 2 × 12-bit no scaling YCBCR 4:4:4 3 × 8-bit YCBCR 4:4:4 3 × 8-bit no scaling RGB 4:4:4 3 × 8-bit no scaling YCBCR 4:2:2 2 × 12-bit no scaling YCBCR 4:4:4 3 × 8-bit YCBCR 4 : 2 : 2 up to 1 × 12-bit scalable YCBCR 4:2:2 2 × 12-bit scalable YCBCR 4:4:4 3 × 8-bit scalable RGB 4:4:4 3 × 8-bit up to 2 × 12-bit scalable YCBCR 4:2:2 2 × 12-bit scalable YCBCR 4:4:4 3 × 8-bit scalable RGB 4:4:4 3 × 8-bit |
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