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VD6640 데이터시트(PDF) 83 Page - STMicroelectronics

부품명 VD6640
상세설명  Automotive 1.3 megapixel high-dynamic range image sensor
PDF  126 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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VD6640 데이터시트(HTML) 83 Page - STMicroelectronics

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VG6640, VD6640
Video system
125
7.3.5
Integration and gain parameter re-timing
Due to the triple exposure architecture and various latencies the period in the frame where a
specific register can be set to be consumed before the next frame starts is as shown in
Figure 25
Figure 25. CCI parameter update window
The last moment to update registers so that they will apply to next frame integration tracks
with the start of the next frame: 113 lines to end of current frame + 46 lines inter frame = 159
lines to before the start of next frame. If you increase the inter frame, then the moment
remains defined as: 159 lines before the start of the next frame.
7.3.6
Grouped register settings
If a large number of registers are required to be set in a single frame, due to the timing of the
CCI commands some transactions may be consumed in the immediate frame, the
remainder in the next frame. To avoid this problem, bit 0 of the Grouped_Parameter_Hold
(0x0104)
register should be used to inhibit the application of new register values until the
complete set of new values have been written to the sensor. Bit 0 should be set to 1,
registers written, then the bit cleared. This will ensure that all registers are consumed at the
same time. An example of the multiple CCI grouped writes is shown in Figure 26.



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