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K1 Camera Interface Description

Introduction to Processor MIPI CSI2​

MIPI CSI - 2 was initially introduced in 2005 as a standardized camera interface specification for mobile devices, officially known as MIPI Camera Serial Interface 2. MIPI CSI - 2 provides high - bandwidth, low - power consumption, and low - electromagnetic interference features. Due to its ease of use and support for high - performance applications, including 1080p, 4K, 8K, or higher video and high - resolution imaging, it has now become the most widely used embedded camera and imaging interface. For detailed information, refer to: MIPI CSI - 2 Specifications

1.1 MIPI CSI2 Controller​

The RISC - V application processor of K1 integrates two MIPI - CSI2 v1.1 controllers, each supporting 4 lanes with a maximum transmission rate of 1.5Gbps per lane. The supported data formats are as follows:

  • Legacy YUV420 8 - bit
  • YUV420 8 - bit
  • RAW8
  • RAW10
  • RAW12
  • RAW14
  • Embed data type And it supports the following two data interleaving formats:
  1. Data type interleaving
  2. Virtual channel interleaving

1.2 ISP Processor​

The K1 processor integrates a high - performance image processor that can simultaneously support two channels of raw data video streams, with a maximum processing capability of 16M@30fps. The main features of the ISP processor are as follows:

  • Support video mode and picture mode
  • RAW sensor, output YUV data to DRAM
  • Hardware JPEG encoder/decoder (hardware, up to 23M is supported)
  • Support YUV/EXIF/JFIF format
  • AF/AE/AWB
  • Face detection
  • Digital zoom, panorama view
  • PDAF
  • PIP (picture in picture)
  • Continuous video AF
  • HW 3D denoise
  • Multi - layer 2D YUV denoise
  • Post Porcess of Lens Shading Correction
  • Edge enhancement For more detailed information, you can read the chip specification: ISP Processor Specifications

2. BIT - BRICK K1 Camera​

The BIT - BRICK K1 board reserves a 4 - lane MIPI CSI2S camera interface alt text Its pin definition is as follows: Figure 1 K1 Camera Interface Definition BIT - BRICK provides several cameras of different specifications (for details, refer to the bit - brick hardware product details page): Figure 1 K1 Camera Interface Definition Users can also design the camera according to their actual needs. The supported camera sensors are as follows: Figure 1 K1 Camera Interface Definition It is recommended to choose the sensors in the above list to reduce the workload of software debugging.