RM0390 Rev 4 447/1328
RM0390 Digital camera interface (DCMI)
448
15.7.11 DCMI data register (DCMI_DR)
Address offset: 0x28
Reset value: 0x0000 0000
The digital camera Interface packages all the received data in 32-bit format before
requesting a DMA transfer. A 4-word deep FIFO is available to leave enough time for DMA
transfers and avoid DMA overrun conditions.
Bits 15:14 Reserved, must be kept at reset value.
Bits 13:0 CAPCNT[13:0]: Capture count
This value gives the number of pixel clocks to be captured from the starting
point on the same line. It value should corresponds to word-aligned data for
different widths of parallel interfaces.
0x0000 => 1 pixel
0x0001 => 2 pixels
0x0002 => 3 pixels
....
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Byte3 Byte2
rrrrrrrrrrrrrrrr
1514131211109876543210
Byte1 Byte0
rrrrrrrrrrrrrrrr
Bits 31:24 Byte3: Data byte 3
Bits 23:16 Byte2: Data byte 2
Bits 15:8 Byte1: Data byte 1
Bits 7:0 Byte0: Data byte 0
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