Agilent 5991-3959EN Master Your MIPI M-PHY Receiver Tests - Application Brief c20140830 [7] free download

File name 5991-3959EN Master Your MIPI M-PHY Receiver Tests - Application Brief c20140830 [7].pdf

Keysight Technologies Master Your MIPI M-PHY Receiver Tests Application Brief How to Verify MIPI Conformance Using the J-BERT M8020A High-Performance BERT Overview The wide spread and rapid development of cell phones from simple voice-capable devices to smart phones or even tablet PCs with the constant addition of capabilities and features came along with a proliferation of interfaces between ASICs and "sensors" and "terminal devices" such as microphones, cameras, loudspeakers, displays, and peripheral electrical devices as depicted in Figure 1a, which made ASIC development and system integration an increasingly difficult task. Figure 1a. Smartphone with a variety of interfaces to sensors, terminal, and electrical peripheral devices. Figure 1b. Block diagram and the use of buses standardized through the MIPI alliance. The MIPI organization was founded in 2003 (MIPI standing for Mobile Industry Processor Interface) in order to structure the intestines of "mobile devices ranging from smart phones, wireless-enabled tablets and netbooks" and to "benefit the entire mobile industry by establishing standards for hardware and software interfaces in these devices" enabling reuse and compatibility in mobile devices making "system integration less burdensome than in the past." "The distinctive requirements of mobile terminals drive the development of MIPI Specifications."1 In Figure 1b the high speed interfaces are marked with red arrows. By not defining these interfaces as monolithic blocks (such as it is done in computer standards e.g. USB or PCIe) but instead separating the Phy- from the protocol-layer, it was possible to address the variety of sensors and terminal devices with only two different high speed Phy-layers. Figure 2 shows the different MIPI-standards, which protocols reside on D-PHY and M-PHY respectively, which application they serve, and which kind of test equipment is used for either protocol verification or validation of Phy-layer interoperability/conformance to specifications. 1. http://mipi.org/momentum 2 Application Protocol CSI-2 DSI-1 DSI -1 CSI CSI -3 DSI-2 DSI-2 UFS UFS CSI-2 DigRF SS standard camera Camera display Display DigRF