今天开始,读一本新的赛灵思IP手册,HDMI 1.4/2.0 Receiver Subsystem v2.0 Product Guide,即HDMI接受器系统的手册。从概述开始。
Figure 2-3 shows the internal structure of the HDMI RX Subsystem when Native Video Interface is selected as video interface. In this illustration, both HDCP 1.4 and HDCP 2.2 are selected.
图2-3显示了选择本机视频接口作为视频接口时HDMI RX子系统的内部结构。在本图中,选择了HDCP 1.4和HDCP 2.2。
The data width of the video interface is configured in the Vivado IDE by setting the Number of Pixels Per Clock on Video Interface and the Max Bits Per Component parameters.
视频接口的数据宽度在Vivado IDE中通过设置视频接口上每个时钟的像素数和每个组件的最大位数参数进行配置。
The audio interface is a 32-bit AXI4-Stream master bus. The subsystem converts the captured audio to a multiple channel AXI audio stream and outputs the audio data on this interface.
音频接口是32位AXI4流主总线。子系统将捕获的音频转换为多通道AXI音频流,并在此接口上输出音频数据。
The CPU interface is an AXI4-Lite bus interface, which is connected to a MicroBlaze™ or Zynq®-7000 SoC processor. Multiple submodules are used to construct the HDMI RX Subsystem and all the submodules which require software access are connected through an AXI crossbar. Therefore, the MicroBlaze or Zynq-7000 SoC processor is able to access and control each individual submodules inside the HDMI RX Subsystem.
CPU接口是一个AXI4 Lite总线接口,连接到MicroBlaze™ 或Zynq®-7000 SoC处理器。多个子模块用于构建HDMI RX子系统,所有需要软件访问的子模块通过AXI交叉杆连接。因此,MicroBlaze或Zynq-7000 SoC处理器能够访问和控制HDMI RX子系统内的每个子模块。
IMPORTANT: The direct register level access to any of the submodules is not supported.
The HDMI RX Subsystem device driver has an abstract layer of API to allow you to implement certain functions. This AXI4-Lite slave interface supports single beat read and write data transfers (no burst transfers).
HDMI RX子系统设备驱动程序有一个抽象的API层,允许您实现某些功能。此AXI4 Lite从机接口支持单拍读写数据传输(无突发传输)。
The HDMI RX subsystem is connected to a Xilinx Video PHY Controller, which takes electronic signals from a HDMI cable and translates it into HDMI stream. Then, the HDMI RX subsystem converts the HDMI stream into native video stream and audio stream. Based on the configuration selected, the HDMI RX Subsystem sends the video stream in either Native Video format or AXI4-Stream format together with the AXI4-Stream Audio to other processing modules.
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