
REF: BB_SRM_xM BeagleBoard-xM System
Reference Manual
Revision A2
Page 98 of 164
Table 19. Camera Interface Signals
Signal Function Description I/O Processor
cam_hs HS Camera Horizontal Synchronization I/O A24
cam_vs VS Camera Vertical Synchronization I/O C25
cam_xclka Clock Camera Clock Output O
cam_d0 Camera Data Camera image data bit 0 I AG17
cam_d1 Camera Data Camera image data bit 1 I AH17
cam_d2 Camera Data Camera image data bit 2 I B24
cam_d3 Camera Data Camera image data bit 3 I C24
cam_d4 Camera Data Camera image data bit 4 I D24
cam_d5 Camera Data Camera image data bit 5 I A25
cam_d6 Camera Data Camera image data bit 6 I K28
cam_d7 Camera Data Camera image data bit 7 I L28
cam_d8 Camera Data Camera image data bit 8 I K27
cam_d9 Camera Data Camera image data bit 9 I L27
cam_d10 Camera Data Camera image data bit 10 I B25
cam_d11 Camera Data Camera image data bit 11 I C26
cam_fld RESET Camera field identification I/O C23
cam_pclk Pixel Clock Camera pixel clock I C27
cam_wen Camera Write Enable I B23
The cam_fld signal is used as a RESET signal to the camera board. When used as a reset,
the pin should be set up as a GPIO pin.
Table 20 shows the mapping of the pins on the camera sensors to the pins on the
processor. In order to work with the different modules, you must take into account the
order of the bits. The table covers the currently available camera modules that are
compatible with the Beagle –xM. You will notice some of the lettering in red. These are
signals that are not used by the camera module. In order for the data to be correct, these
signals need to be tied low by enabling the internal pulldown resistors.
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