High-Definition SMPTE Encoder with Colour-Space Converter

The HD_SMPTE_ENCODER IP Core is a digital video encoder with integrated colour-space converter. The encoder accepts 24-bit RGB pixels from sequential frames. These pixels are then mapped to the YCbCr colour-space and formatted correctly into a SMPTE video output stream.

The encoder begins operation after reset is disabled and on detection of the first valid frame. Input pixels are sampled on the rising-edge of clk when the pixin_val and pixin_rdy signals are both asserted high. The pixin_vsync flag is coinciendent with the first pixel of a frame. The pixin_hsync flag is coincident with the first pixel of a line.

The valid/ready input interface is a streaming interface with full flow control. It shares a common format with all other Zipcores video IP and allows easy connectivity between IP Cores. The interface also allows simple connectivity with an input FIFO or external frame buffer.

The output of the encoder generates an industry standard SMPTE format 20-bit video stream together with a video_val signal that is asserted with the first valid byte of the output stream.

If the encoder is starved of pixels during the generation of an active line then the underflow flag will be asserted. In the event of an underflow condition, then design must be reset by asserting the reset signal low for at least one clock cycle. Operation will then resume as normal when the next input frame is detected.

• Synthesizable, technology independent IP Core for FPGA, ASIC and SoC
• Supplied as human-readable VHDL (or Verilog) source code
• Converts 24-bit RGB digital video to an industry standard 20-bit 4:2:2 SMPTE stream
• Integrated RGB888 to 4:2:2 YCbCr colour-space converter
• All 720p and 1080p (progressive) video formats supported including SMPTE 296M and SMPTE 274M
• All signals synchronous with the pixel clock with full flow-control on the input video pixels
• Small implementation size ideal for all types of FPGA
• Full HD1080p60 video supported on most devices

• Generation of progressive SMPTE video formats
• Connectivity with a wide range of commercially available video encoder ICs, 3G-SDI, HD-SDI and HDMI transmitters
• Simple and cost-effective method for generating digital video outputs from your FPGA, ASIC or SoC