Datasheet

SAM9G20
DS60001516A-page 706  2017 Microchip Technology Inc.
38.4.3 ISI Status Register
Name: ISI_SR
Access: Read-only
SOF: Start of Frame
0: No start of frame has been detected.
1: A start of frame has been detected.
DIS: Image Sensor Interface Disable
0: The image sensor interface is enabled.
1: The image sensor interface is disabled and stops capturing data. The DMA controller and the core can still read the FIFOs.
SOFTRST: Software Reset
0: Software reset not asserted or not completed.
1: Software reset has completed successfully.
CDC_PND: Codec Request Pending
0: No request asserted.
1: A codec request is pending. If a codec request is asserted during a frame, the CDC_PND bit rises until the start of a new frame. The
capture is completed when the flag FO_C_EMP = 1.
CRC_ERR: CRC Synchronization Error
0: No CRC error in the embedded synchronization frame (SAV/EAV)
1: The CRC_SYNC is enabled in the control register and an error has been detected and not corrected. The frame is discarded and the
ISI waits for a new one.
FO_C_OVF: FIFO Codec Overflow
0: No overflow
1: An overrun condition has occurred in input FIFO on the codec path. The overrun happens when the FIFO is full and an attempt is made
to write a new sample to the FIFO.
FO_P_OVF: FIFO Preview Overflow
0: No overflow
1: An overrun condition has occurred in input FIFO on the preview path. The overrun happens when the FIFO is full and an attempt is
made to write a new sample to the FIFO.
FO_P_EMP
0:The DMA has not finished transferring all the contents of the preview FIFO.
1:The DMA has finished transferring all the contents of the preview FIFO.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
––––––FR_OVRFO_C_EMP
76543210
FO_P_EMP FO_P_OVF FO_C_OVF CRC_ERR CDC_PND SOFTRST DIS SOF