HDMI Tx

Convert YCbCr 4:2:2 pixel stream to video frame

• Library:

• SoC Blockset Support Package for Xilinx Devices / Video

• 

Description

The HDMI Tx block converts a pixel stream in YCbCr 4:2:2 format to raw video data for display during simulation. It can return data in pixel stream mode for hardware algorithm design or in frame mode for faster simulation. When you include this block in your design, the SoC Builder tool generates all the IP blocks necessary to transmit video data to the FMC-HDMI-CAM card attached to your hardware board. None of the block parameters affect hardware behavior.

You must have Computer Vision Toolbox™ to use this block.

Ports

Input

hdmiTxData — Single YCbCr 4:2:2 pixel in pixel stream

concatenated YCbCr value

Single YCbCr 4:2:2 pixel in pixel stream, specified as a scalar in concatenated YCbCr 4:2:2 format, where

• bits [1:8] represent Y.

• bits [9:16] represent Cb or Cr, interleaved in time.

Data Types: uint16

ctrl — Control signals accompanying input pixel stream

pixelcontrol bus

Control signals accompanying input pixel stream, specified as a pixelcontrol (Vision HDL Toolbox) bus. The bus contains five Boolean signals indicating the validity of a pixel and its location within a frame.

When the Input mode parameter is Frame, the block sets all five signals in the pixelcontrol bus to true to indicate when the output data is valid.

Data Types: bus

Output

frame — Output frame data

vector

Output frame data, returned as a vector in the YCbCr 4:2:2 format.

Dependencies

To enable this port, select the Frame output parameter.

Data Types: uint8

valid — Control signal accompanying output frame data

scalar

Control signal accompanying output frame data, returned as a scalar.

This port is a control signal that indicates when the frame output port is valid. The block sets this value to 1 when the data is available on the frame output port.

Dependencies

To enable this port, select the Frame output parameter.

Data Types: Boolean

Parameters

Frame size — Video frame size

160x120p (default) | ...

Select the video frame size as one of these values:

• 480p SDTV (720x480p)

• 576p SDTV (720x576p)

• 720p HDTV (1280x720p)

• 1080p HDTV (1920x1080p)

• 160x120p

• 320x240p

• 640x480p

• 800x600p

• 1024x768p

• 1280x768p

• 1280x1024p

• 1360x768p

• 1366x768p

• 1400x1050p

• 1600x1200p

• 1680x1050p

• 1920x1200p

Input mode — Video input format

Frame (default) | Pixel

Specify whether the input is streamed one pixel per clock cycle or one frame per clock. Pixel mode better represents the hardware algorithm and is recommended for FPGA deployment. Frame mode enables faster simulation.

Visualize output frame — Display output video

on (default) | off

Select this parameter to enable a To Video Display (Computer Vision Toolbox) block to display the output frame during simulation.

Frame output — Frame output

off (default) | on

Select this parameter to enable the output ports frame and valid. Using these ports, you can access video frame data from this block and export it to any file or a workspace variable.

Extended Capabilities

HDL Code Generation

Generate Verilog and VHDL code for FPGA and ASIC designs using HDL Coder™.

To automatically generate HDL code for your design, and execute on an SoC device, use the SoC Builder tool.