The data path of raw data mode is shown in the thicker lines in Figure 12-1189 (that is A2). Data path A1 is applicable to YUV input mode only.
- The pixel clock (CCDC_PCLK) latches the data.
- Pixel clock polarity can be either rising or
falling edge and is set in VPFE clock control register (VPFE_CONFIG[0]
PCLK_INV).
- VPFE_SYNMODE[6] DATAPOL bit affects the data
representation.
- Data is right-shifted to align the data in the
least significant bits of the data bus and provide the maximum dynamic range for
the remainder of the processing (VPFE_SYNMODE[10-8] DATSIZ bitfield). This also
sets the maximum data size allowed in subsequent clipping/limiting operations
and is the output data alignment when it is written to external memory.