什么会导致VDMA（AXI视频直接存储器访问）的S2MM中的帧计数器中断？

我使用VDMA，AXI互连器和DDR3进行了设计，以实现视频帧缓冲。
我遇到了一个问题，即在完成第一帧之后，VDMA卡在第二帧的开头。
我通过AXI lite读取了VDMA的寄存器来检查状态：
34h S2MM_DMASR.FrmCnt_Irq成为“1”并保持“1”。
我检查了VDMA PG020，它指出：“帧计数中断。当设置为1时，表示生成了帧计数中断事件。这是在传输DMACR.FrameCount帧时发生的。”
这非常令人困惑。
什么意思是“DMACR.FrameCount框架已被转移”？
生成此事件后，我应该怎么做才能清除它以使VDMA继续工作？
谢谢。



以下为原文

I made a design with VDMA, AXI interconnector, and DDR3 to achieve a video frame buffer.

I confronted a problem that after completed the first frame, the VDMA is stuck at the beginning of 2nd frame.

I read of the registers of VDMA through AXI lite read to check the states:

34h S2MM_DMASR.FrmCnt_Irq becomes "1" and keeps "1". I checked the VDMA PG020, it states: "Frame Count Interrupt. When set to 1, indicates a Frame Count interrupt event was generated. This occurs when DMACR.FrameCount frames have been transferred."

This is very confusing. What does mean " DMACR.FrameCount frames have been transferred"? After this event generated, what should I do to clear it to make VDMA continuing work?

Thanks.