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PYTHON480 データシート(PDF) 22 Page - ON Semiconductor |
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PYTHON480 データシート(HTML) 22 Page - ON Semiconductor |
22 / 69 page PYTHON 480 www.onsemi.com 22 Sensor Reconfiguration During the standby, idle, or running state several sensor parameters can be reconfigured. • Frame Rate and Exposure Time: Frame rate and exposure time changes can occur during standby, idle, and running states by modifying registers 199 to 203. Refer to page 30−32 for more information. • Signal Path Gain: Signal path gain changes can occur during standby, idle, and running states by modifying registers 204/205. Refer to page 37 for more information. • Windowing: Changes with respect to windowing can occur during standby, idle, and running states. Refer to Multiple Window Readout on page 29 for more information. • Subsampling: Changes of the subsampling mode can occur during standby, idle, and running states by modifying register 192. Refer to Subsampling on page 30 for more information. • Shutter Mode: The shutter mode can only be changed during standby or idle mode by modifying register 192. Reconfiguring the shutter mode during running state is not supported. Sensor Configuration This device contains multiple configuration registers. Some of these registers can only be configured while the sensor is not acquiring images (while register 192[0] = 0), while others can be configured while the sensor is acquiring images. For the latter category of registers, it is possible to distinguish the register set that can cause corrupted images (limited number of images containing visible artifacts) from the set of registers that are not causing corrupted images. These three categories are described here. Static Readout Parameters Some registers are only modified when the sensor is not acquiring images. Reconfiguration of these registers while images are acquired can cause corrupted frames or even interrupt the image acquisition. Therefore, it is recommended to modify these static configurations while the sequencer is disabled (register 192[0] = 0). The registers shown in Table 14 should not be reconfigured during image acquisition. A specific configuration sequence applies for these registers. Refer to the operation flow and startup description. Table 14. STATIC READOUT PARAMETERS Group Addresses Description Clock generator 32 Configure according to recommendation Image core 40 Configure according to recommendation AFE 48 Configure according to recommendation Bias 64–71 Configure according to recommendation LVDS 112 Configure according to recommendation Sequencer mode selection 192 [5:4] Operation modes are: • triggered_mode • slave_mode All reserved registers Keep reserved registers to their default state, unless otherwise described in the recommendation Dynamic Configuration Potentially Causing Image Artifacts The category of registers as shown in Table 15 consists of configurations that do not interrupt the image acquisition process, but may lead to one or more corrupted images during and after the reconfiguration. A corrupted image is an image containing visible artifacts. A typical example of a corrupted image is an image which is not uniformly exposed. The effect is transient in nature and the new configuration is applied after the transient effect. Table 15. DYNAMIC CONFIGURATION POTENTIALLY CAUSING IMAGE ARTIFACTS Group Addresses Description Black level configuration 128–129 197[12:8] reconfiguration of these registers may have an impact on the black−level calibration algorithm. The effect is a transient number of images with incorrect black level compensation. Sync codes 129[13] 116–126 Incorrect sync codes may be generated during the frame in which these registers are modified. Datablock test configurations 144 Modification of these registers may generate incorrect test patterns during a transient frame. |
同様の部品番号 - PYTHON480 |
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同様の説明 - PYTHON480 |
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