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MCIMX6D1DYM08AC Datasheet(PDF) 97 Page - Freescale Semiconductor, Inc |
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MCIMX6D1DYM08AC Datasheet(HTML) 97 Page - Freescale Semiconductor, Inc |
97 / 165 page Electrical Characteristics i.MX 6Dual/6Quad Automotive and Infotainment Applications Processors, Rev. 2.3 Freescale Semiconductor 97 4.11.10.2 Sensor Interface Timings There are three camera timing modes supported by the IPU. 4.11.10.2.1 BT.656 and BT.1120 Video Mode Smart camera sensors, which include imaging processing, usually support video mode transfer. They use an embedded timing syntax to replace the IPU2_CSIx_VSYNC and IPU2_CSIx_HSYNC signals. The timing syntax is defined by the BT.656/BT.1120 standards. This operation mode follows the recommendations of ITU BT.656/ ITU BT.1120 specifications. The only control signal used is IPU2_CSIx_PIX_CLK. Start-of-frame and active-line signals are embedded in the data stream. An active line starts with a SAV code and ends with a EAV code. In some cases, digital blanking is inserted in between EAV and SAV code. The CSI decodes and filters out the timing-coding from the data stream, thus recovering IPU2_CSIx_VSYNC and IPU2_CSIx_HSYNC signals for internal use. On BT.656 one component per cycle is received over the IPU2_CSIx_DATA_EN bus. On BT.1120 two components per cycle are received over the IPU2_CSIx_DATA_EN bus. 4.11.10.2.2 Gated Clock Mode The IPU2_CSIx_VSYNC, IPU2_CSIx_HSYNC, and IPU2_CSIx_PIX_CLK signals are used in this mode. See Figure 65. Figure 65. Gated Clock Mode Timing Diagram 2 The MSB bits are duplicated on LSB bits implementing color extension. 3 The two MSB bits are duplicated on LSB bits implementing color extension. 4 YCbCr, 8 bits—Supported within the BT.656 protocol (sync embedded within the data stream). 5 RGB, 16 bits—Supported in two ways: (1) As a “generic data” input—with no on-the-fly processing; (2) With on-the-fly processing, but only under some restrictions on the control protocol. 6 YCbCr, 16 bits—Supported as a “generic-data” input—with no on-the-fly processing. 7 YCbCr, 16 bits—Supported as a sub-case of the YCbCr, 20 bits, under the same conditions (BT.1120 protocol). 8 YCbCr, 20 bits—Supported only within the BT.1120 protocol (syncs embedded within the data stream). |
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