In USB product series, M31 not only provides customers with a standard USB PHY solution, but also offers a unique BCK function. M31’s patented BCK (Built-in-Clock, a.k.a. Crystal-less) technology is an innovative way to save BOM(Bill of Materials) cost by reducing an external crystal for mobile USB devices. In general, this solution has been popularly adopted by those USB devices in applications like flash drive, wireless transmitter, sound card, webcam. During USB data transfer, the IP performs a background calibration to ensure frequency accuracy. The USB IP with BCK complies with the USB-IF specification and has the same electrical performance as the standard USB IP.
USB1.1 build-in clock PHY, TSMC 55ULP
Overview
Key Features
- Smallest USB 3.2 Gen1x1 BCK PHY IP worldwide (e.g. IP size @40nm <0.36mm²)
- Fully compliant with Universal Serial Bus USB 3.2 Gen1x1, 2.0, and 1.1 electrical specifications
- Supports clock outputs from the internal BCK module
- Real-time calibrations to ensure frequency accuracy
- Data UI (unit interval) is well-controlled within ±500ppm during data transfer
- Concise and explicit design structure to ease the IP integration
Block Diagram
Technical Specifications
Foundry, Node
TSMC 55ULP
TSMC
Pre-Silicon:
55nm
ULP