CPTREQ=B_0x0, CPTMODE=B_0x0, FRATE=B_0x0
DCMIPP Pipe0 flow control configuration register
| FRATE | Frame capture rate control These bits define the frequency of frame capture. They are meaningful only in Continuous grab mode, ignored in Snapshot mode. 0 (B_0x0): All frames are captured 1 (B_0x1): One out of two frames captured (50% bandwidth reduction) 2 (B_0x2): One out of four frames captured (75% bandwidth reduction) 3 (B_0x3): One out of eight frames captured (87% bandwidth reduction) |
| CPTMODE | Capture mode 0 (B_0x0): Continuous grab mode - The received data are transferred into the destination memory through the AXI master. 1 (B_0x1): Snapshot mode (single frame) - Once activated, the interface waits for the start of frame, and then transfers a single frame through the AXI master. At the end of the frame, the CPTACT bit is automatically reset. |
| CPTREQ | Capture requested When PIPEN = 1 and when the CPTREQ is set to 1 the pipe waits for the first VSync, and automatically starts a capture and sets CPTACT = 1 to mention it. In Snapshot mode the CPTREQ bit is automatically cleared at the start of the first received frame. In Continuous grab mode, the capture remains active and CPTREQ = 1 until the software clears CPTREQ: the capture stops and CPTACT is reset at the end of the ongoing frame. The DCMI and pipe configuration registers must be correctly programmed before enabling this bit. 0 (B_0x0): Capture not requested for next frame 1 (B_0x1): Capture requested for next frame |