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IMX27L Datasheet(PDF) 51 Page - Freescale Semiconductor, Inc |
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IMX27L Datasheet(HTML) 51 Page - Freescale Semiconductor, Inc |
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51 / 122 page  Signal Descriptions i.MX27/i.MX27L Data Sheet, Advance Information, Rev. 1 Freescale Semiconductor Preliminary—Subject to Change Without Notice 51 3.5.5 CMOS Sensor Interface (CSI) This section describes the electrical information (AC timing) of the CSI. 3.5.5.1 Gated Clock Mode Timing VSYNC, HSYNC, and PIXCLK signals are used in this mode. A frame starts with a rising/falling edge on VSYNC, then HSYNC goes high and holds for the entire line. The pixel clock is valid as long as HSYNC is high. Figure 9 and Figure 10 depict the gated clock mode timings of CSI, and Table 20 lists the timing parameters. Figure 9 shows sensor output data on the pixel clock falling edge. The CSI latches data on the pixel clock rising edge. Figure 9. CSI Timing Diagram, Gated, PIXCLK—Sensor Data at Falling Edge, Latch Data at Rising Edge VSYNC HSYNC PIXCLK DATA[7:0] Valid Data Valid Data Valid Data 1 2 34 56 7 |
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