我在SPRU629A第89页发现“If
the SSE bit is set, then when the VCEN bit is set to 1, the video port will not
start capturing data until after detecting two vertical blanking intervals. If the
SSE bit is cleared to 0, capture begins immediately when the VCEN bit is set.”
是不是采集数据是在VCEN设置为1时，经过俩个vertical blanking之后 ，才开始在行有效时采集的，这样再通过VCCASTOP1设置
所需采集的大小，就可以采集到一副图像。不知理解正确与否？