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The AVC 4K Decoder Core is a highly optimized, high resolution decompression engine targeted primarily at FPGAs. It is well suited for various applications ranging from broadcast and professional video to high end consumer electronics.

The decoder design is fully autonomous and does not require any external processor to aid the decode operation. The IO interface comprises of an input FIFO and an output frame buffer. Decoded data can also be provided on a serial bus with embedded sync information. The decoder requires DDR SDRAM to store reference pictures. .

The decoder solution is available either as a FPGA netlist orin source code format and can be customized to meet therequirements of end users.

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Technical Specifications




AVC 4K decoder is fully compliant with the ISO/IEC 14496-10 & ITU-T H.264 standard. The AVC 4K Decoder has been validated in hardware using conformance streams from ITU-T & other Industry standard test suites for functional and performance testing. It is a universal decoder.

This IP is filed, tested and proven in various customer applications. VYUsync’s AVC 4K decoder IP core is evaluated & purchased by leaders in Broadcasting Industry. The AVC 4K decoder supports all the features which are part of the H.264 standard with respect to the Profiles listed.



The AVC 4K Decoder is an Ultra-low latency decoder with robust error handling resilience & Concealment. It support Constrained Baseline, Main & High profiles that allows for a bit depth of 8-bits to 10-bits per sample with support for 4:0:0, 4:2:0, and 4:2:2 Chroma sampling.

The AVC 4k decoder is capable of decoding all the bit streams that are encoded for the High Tier & Level 4.1 and for all lower tiers/Levels. The AVC 4k decoder supports CABAC Bitrate of 160Mbps and CAVLC bitrate of 320 Mbps. The decoder decodes at the rate of 60 Frames per second.



The video formats supported by the AVC 4K decoder are .NTSC, PAL, 720p50, 720p59.94 720p60, 1080i50, 1080i59.94, 1080i60, 1080Psf25, 1080Psf29.97, 1080Psf30 1080p23.98, 1080p24, 1080p25, 1080p29.97, 1080p30, 1080p50, 1080p59.94, 1080p60.

All the non-standard resolutions are supported by the decoder up to a maximum resolution of 4096x2160 and a maximum frame rate of 60.For example, monitor resolution 1600x900, 1600 x 1200, 1920 x 1440, 1920 x 1200 is supported.



The IO interface comprises of an input FIFO and an output frame buffer. The AVC 4K decoder accepts Elementary stream in Annex B Byte stream format. There is also an option for accepting Transport stream input when coupled with Transport Stream Demultiplexer IP.

The decoder requires DDR SDRAM to store reference pictures. The decoded pixels are written to DDR4 memory and decoded picture properties are signaled to the external system. The decoded data can also be provided in YUV data with embedded sync information.



The AVC 4K decoder can be implemented in the Xilinx Kintex Ultrascale. FPGA resources utilization for 3840 x 2160p60, 422, 10-bit, 80 mbps CABAC, 160 mbps CAVLC decoder is LUT’s -000000, BRAM’s – 00 & DSP’s – 000. This does not include memory controller, display controller & TS demultiplexer.

The AVC 4K Decoder solution requires a total of 40-bit External memory running at 500 MHz. Typically 64-bit used instead of 40-bit. Memory bandwidth is calculated for the worst case inter prediction scenario where in all images are partitioned into 8x8 blocks which use bidirectional inter prediction.