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Sony Camera LVDS Interface

The SONY_CAM_IF IP Core provides a simple way to connect the Sony® FCB-EV range of cameras to your FPGA. It serves as a direct replacement for an external LVDS receiver IC and takes advantage of the fast LVDS I/O solutions provided by modern FPGA devices.

The interface supports both single-mode and double-mode operation in which 4 x LVDS data lanes or 8 x LVDS data lanes may be connected to the IP Core. In the standard configuration, the camera input clock (TXCLKOUT_P/N) is assumed to be set to a frequency of 74.25 MHz. This permits operation at HD1080p30 resolution in single-mode (1x16-bit pixels per clock) or HD1080p60 operation in double-mode (2x16-bit pixels per clock).

The LVDS data lanes are deserialized using the high-speed SERDES input resources of the FPGA.. The resulting parallel data are then aligned and decoded to provide a standard SMPTE 274M output video stream. SMPTE data changes on the rising-clock edge of the SMPTE_TCLK (cam_clk) signal.

Other flags are also provided to indicate the presence of active video, the start of an active frame and the start of an active line. In addition, there is a stream locked flag that indicates the bit alignment has succeeded and a valid SMPTE stream has been found.