データシートサーチシステム |
|
PYTHON480 データシート(PDF) 13 Page - ON Semiconductor |
|
PYTHON480 データシート(HTML) 13 Page - ON Semiconductor |
13 / 69 page PYTHON 480 www.onsemi.com 13 LVDS Clock Receiver The LVDS clock receiver receives an LVDS clock signal and distributes the required clocks to the sensor. Input clock frequency is 340 MHz. The clock input needs to be terminated with a 100 W resistor. Column Multiplexer All pixels of one image row are stored in the column sample−and−hold (S/H) stages. These stages store both the reset and integrated signal levels. The data stored in the column S/H stages is read out through 2 parallel differential outputs operating at a frequency of 34 MHz. At this stage, the reset signal and integrated signal values are transferred into an FPN−corrected differential signal. A programmable gain of 1x, 2x, or 3.5x can be applied to the signal. The column multiplexer also supports read−1−skip−1 and read−2−skip−2 mode. Enabling this mode increases the frame rate, with a decrease in resolution but same field of view. Bias Generator The bias generator generates all required reference voltages and bias currents used on chip. An external resistor of 47 k W, connected between pin IBIAS_MASTER and gnd_33, is required for the bias generator to operate properly. Analog Front End The AFE contains 2 channels, each containing a PGA and a 10−bit ADC. For each of the 2 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 (LVDS Mode only) The serializer and LVDS interface block receives the formatted data from the data formatting block. This data is serialized and transmitted by the LVDS 340 MHz output driver. The maximum output data rate is 680 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. CMOS Interface Frame synchronization information is communicated by means of frame and line valid strobes. Both CMOS and LVDS outputs are active at the same time. LVDS channels can be powered down through SPI control when using the CMOS outputs. 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. |
同様の部品番号 - PYTHON480 |
|
同様の説明 - PYTHON480 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |