D-PHY or MIPI Display Phy is a standardized physical layer interface for connecting the Camera/Display to the Processor. This interface is predominantly used in mobile devices, infotainment systems and biometric sensors. This is a unidirectional bus with an explicit clock, up to 4 data lanes and consists of High Speed mode and Low Power mode. The High Speed mode is for fast data transfer and Low Power mode is for power saving to extend the battery life. The data flow in a display interface is from processor to the display device and from camera to the processor in the camera interface. The MIPI D-PHY Specification testing is done based on the Compliance Test Specification (CTS) and requires a board with dynamic switching of termination between Low power state and high speed mode.

The Tektronix TekExpress® D-PHY application offers a complete physical layer test solution for transmitter conformance and characterization as defined in the MIPI D-PHY v1.2 specification. The D-PHYTX automated test solution, along with a Tektronix 6 Series MSO oscilloscope, provides an easy way to test, debug and characterize the electrical and timing measurements of D-PHY data links.