IBX Camera Interface


The Camera Serial Interface (CSI) is a specification of the Mobile Industry Processor Interface (MIPI) Alliance. It defines an interface between a camera and a host processor. The MIPI CSI-2 v1.0 specification was released in 2005. It uses either D-PHY or C-PHY (Both standards are set by the MIPI Alliance) as a physical layer option. The protocol is divided into the following layers…

  • Physical Layer (C-PHY/D-PHY)
  • Lane Merger Layer.
  • Low Level Protocol Layer.
  • Pixel to Byte Conversion Layer
  • Application Layer
There is currently no camera module developed.


The Intel Braswell MicroSoms got two interfaces:

  • one 4 lane MIPI CSI-2
  • one 2 lane MIPI CSI-2


  • FPC connector part numbers are written below the connector symbol.
  • I2C signals are 1.8v. If using a 3.3v module then those needs to be level shifted.
  • Both I2C buses are pulled up with 1K Ohm to V1P8A (domain is always on).
  • Clocks are 19.2MHz clocks and are with 1.8v swing. V3P3A
  • CAM1_VR_EN and CAM2_VR_EN are both 1.8v tolerent module enable signals.
  • V3P3A is 3.3v always on.
  • V1P8S is 1.8v that is shut in suspend mode.

2 lane MIPI CSI-2

Partnumber of the FPC connector: WR-FPC-687-116-149-022

4 lane MIPI CSI-2

Partnumber of the FPC connector: WR-FPC-687-122-149-022

If you use the SolidPC Carrierboard, FPC connectors on the 4 lane MIPI can be added by using a higher mating height for the hirose connectors. To connect a FPC to the 2 lane MIPI, the HDMI connector needs to be disassembled and remove the series caps