MIPI

MIPI M-PHY Testing

Overview of MIPI M-PHY Testing

MIPI M-PHY is a high-speed serial interface standard defined by the MIPI (Mobile Industry Processor Interface) Alliance.
It is mainly used in mobile devices, high-speed storage (such as UFS), high-performance computing (such as M-PCIe), camera, and display interfaces.
M-PHY adopts a layered architecture and supports multiple operating modes (such as High-Speed (HS) mode and low-power PWM mode), featuring high data transfer rates, low power consumption, and flexibility.

Main Aspects of MIPI M-PHY Testing

Signal Integrity Testing: Measuring parameters like eye diagram, jitter, rise/fall time, differential voltage, etc., to ensure signal quality.
Compliance Testing: Executing automated tests according to MIPI specifications to verify whether the DUT (Device Under Test) meets the standards.
Bit Error Rate (BER) Testing: Checking the BER during high-speed transmission to ensure data integrity.
Protocol Layer Testing: Verifying protocol operation for different applications (e.g., UFS, M-PCIe).
Reference Clock Testing: Checking the stability of the system clock to avoid data transmission errors.

MIPI M-PHY Gear Rates

MIPI M-PHY defines different data rates using "Gears", mainly including:

Gear	Data Rate (per lane)
Gear 1	1.46 Gbps
Gear 2	2.92 Gbps
Gear 3	5.83 Gbps
Gear 4	11.66 Gbps
Gear 5	23.32 Gbps (supported by the latest standard)

Overview of Device Under Test (DUT)

The DUT in this testing session is a storage device (such as a UFS chip) or a high-speed communication module (such as an M-PCIe device) that supports the MIPI M-PHY interface.

Testing Equipment Used

Keysight Infiniium series high-end oscilloscopes were used, specifically:

Keysight UXR-Series Oscilloscopes (13 GHz to 110 GHz)

Additionally, the Keysight D9040MPHC MIPI M-PHY Compliance Test Software was used to automate testing and generate reports.

Key Features of D9040MPHC:

Testing according to full MIPI M-PHY v4.1 and CTS v4.1 specifications.
Supports PWM and HS testing across all speed settings.
Automates oscilloscope setup, testing, and reporting to improve accuracy, save time, and enhance repeatability.
Performs automatic margin analysis.

What We Offer

We provide a comprehensive suite of MIPI testing services, including:

Industry Expertise
Comprehensive Testing
Advanced Testing Tools
Customized Solutions
Proven Industry Success