19.RV1126_RV1109编写并移植nvp6021驱动

NVP6124在海思芯片平台上的linux驱动程序。

nvp6158驱动，在Hi3520dv400/3531A/3521A上验证过，可以输出4x1080p 4x720p，海思其他平台移植一下应该也可以用

rv1126_rv1109 显示输出由MIPI切换到BT1120

HD_AHD_PO3100K&NVP6011原理图,专业HD_AHD摄象机参考设计原理图.

NVP6124 完整版datasheet

NVP6124B数据手册 NVP6124B数据手册 NVP6124B数据手册 NVP6124B数据手册

AD芯片驱动实现

基于CV2880和NVP6124B开发的模拟高清AHD信号转换方案，通过此方案可以将AHD信号转成VGA信号或者HDMI信号或者CVBS信号，无信号时系统自动输出彩条。

NVP6134 驱动源码，在海思平台可直接使用

该文档时NVP1918的PDF文档，有详细的寄存器介绍，对编写驱动有很重要的作用。

NVP6124B include 4-Channels AHD2.0 RX and 9-Channels Audio Codec. It is sure that compatible with AHD1.0. The 4-Channels AHD2.0 RX delivers high quality images. It accepts separate 4 CVBS/COMET/AHD1.0/AHD2.0 inputs from Camera and the other video signal sources. It digitizes and decodes NTSC/PAL/COMET/AHD1.0/AHD2.0 video signal into digital video components which represents 8-bit BT.656/1120(like) 4:2:2 byte interleave format with 27/36/37.125/54/72/74.25/108/144/148.5/297MHz multiplexed. The NVP6124B includes Clock PLL, so 27/36/37.125/54/72/74.25/108/144/148.5/297MHz byte- interleave function available. Especially, It is able to use same transmission cable with conventional one for COMET(SD level), AHD1.0 (HD level) and AHD 2.0 (Full HD level), and they provide the superior image quality by minimizing the interference when separating Y and C. The 9-Channels Audio Codec is 8-Channels Voice/1-Channel Mic PCM Codec which handles voice band signals(300Hz~3400Hz) with 8bit/16bit linear PCM, 8bit G.711(u-law, a-law) PCM. Built-in audio controller can generate digital outputs for recording/mixing and accepts digital input for playback. The 4-Channels Coaxial Communication Protocol communicates between controller(DVR) and camera on the video signal through coaxial cable. It was includes Tx for transfer especially signals thought coaxial cable and Rx for receives especially signals to keep informed a user by control registers.

rv1126linux环境配置和PC端仿真yolov3，板端运行yolov5.