ZHCSG69E November 2016 – May 2018 DM505
PRODUCTION DATA.
NOTE
For more information, see the Imaging Subsystem chapter of the device TRM.
The imaging subsystem (ISS) deals with the processing of the pixel data coming from an external image sensor or data from memory (image format encoding and decoding can be done to and from memory). With its subparts, such as interfaces and interconnects, image signal processor (ISP), and still image coprocessor (SIMCOP), the ISS is a key component for the following use cases:
The ISS is mainly composed of CAL_A, CAL_B, LVDS-RX camera interfaces, a parallel interface (CPI), an ISP, and a block-based imaging accelerator (SIMCOP).
All interfaces can use the image signal processor (ISP), but not concurrently. When one interface uses the ISP, the other must send data to memory. However, the ISP can still be used to process this data in memory-to-memory. Time multiplex processing is also possible.
The camera adaptation layer (CAL) deals with the processing of the pixel data coming from an external image sensor, data from memory. The CAL is a key component for the following multimedia applications: camera viewfinder, video record, and still image capture. The CAL has two serial camera interfaces (primary and secondary):