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NOIP1SE5000A-QTI Datasheet(PDF) 10 Page - ON Semiconductor |
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NOIP1SE5000A-QTI Datasheet(HTML) 10 Page - ON Semiconductor |
10 / 75 page NOIP1SN5000A www.onsemi.com 10 Analog Front End The AFE contains 16 channels, each containing a PGA and a 10−bit ADC. For each of the 16 channels, a pipelined 10−bit ADC is used to convert the analog image data into a digital signal, which is delivered to the data formatting block. A black calibration loop is implemented to ensure that the black level is mapped to match the correct ADC input level. Data Formatting The data block receives data from two ADCs and multiplexes this data to one data stream. A cyclic redundancy check (CRC) code is calculated on the passing data. A frame synchronization data block transmits synchronization codes such as frame start, line start, frame end, and line end indications. The data block calculates a CRC once per line for every channel. This CRC code can be used for error detection at the receiving end. Serializer and LVDS Interface The serializer and LVDS interface block receives the formatted (10−bit or 8−bit) data from the data formatting block. This data is serialized and transmitted by the LVDS output driver. In 10−bit mode, the maximum output data rate is 720 Mbps per channel. In 8−bit mode, the maximum output data rate is 576 Mbps per channel. In addition to the LVDS data outputs, two extra LVDS outputs are available. One of these outputs carries the output clock, which is skew aligned to the output data channels. The second LVDS output contains frame format synchronization codes to serve system−level image reconstruction. Channel Multiplexer The P1−SN/SE/FN LVDS channel multiplexer provides a 8:4, 8:2 and 8:1 feature, in addition to utilizing all 8 output channels. The P3−SN/SE/FN LVDS channel multiplexer provides a 4:2 and 4:1 feature, in addition to utilizing all 4 output channels. Sequencer The sequencer: • Controls the image core. Starts and stops integration and control pixel readout. • Operates the sensor in master or slave mode. • Applies the window settings. Organizes readouts so that only the configured windows are read. • Controls the column multiplexer and analog core. Applies gain settings and subsampling modes at the correct time, without corrupting image data. • Starts up the sensor correctly when leaving standby mode. Automatic Exposure Control The AEC block implements a control system to modulate the exposure of an image. Both integration time and gains are controlled by this block to target a predefined illumination level. |
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