DocID027496 Rev 1

19/24

AN4658

Peripheral migration guide

23

2.14

Digital camera interface (DCMI)

The STM32F429xx/439xx and STM32F446xx products have similar DCMI peripherals, as

can be seen in Table 18, where a gray cell indicates that the feature is not available.

– DCMI_CR [BSM] and DCMI_CR

[OEBS]: allows configuring the byte

selection for capture

– DCMI_CR [LSM] and DCMI_CR

[OELS]: allows configuring the line

selection for capture

The added bits in DCMI registers are shown in Table 19, the new features are highlighted in

red, and reserved bits are in light gray.

Table 19. DCMI_CR register for STM32F446xx products

Table 18. DCMI comparison

DCMI

STM32F429xx/439xx

STM32F446xx

Parallel interface

8-, 10-, 12- and 14-bits

Embedded synchronization

Yes

Yes

External line and frame

synchronization

Yes

Yes

Crop feature

Yes

Yes

Supported data formats

8/10, 12, 14 bits progressive video (monochrome or raw bayer)

RGB565 progressive video

YCbCr4:2:2

8/10, 12, 14 bits progressive video (monochrome or raw bayer)

NA

YCbCr – Y only (Black and White)

NA

Half resolution image extraction

Compressed JPEG

NA

Added bits:

1. See Table 19

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

OELS

LSM

OEBS

BSM

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

ENABLE

EDM

FCRC

VSPOL HSPOL PCKPOL

ESS

JPEG

CROP

CM

CAPTURE