SSM1268-B is a single-chip clock generator/synthesizer designed to support multiple clock needs in digital systems. It is capable of generating accurate and clean clock signals with a wide frequency range. It is designed to support a wide range of interface standards including PCIe, SATA, SDIO, I2C and USB. It has on-chip trimming of PLLs to support the changing environment in digital systems. The SSM1268-B provides four differential clock outputs and four single-ended outputs with selectable frequency dividers. The SSM1268-B also has an on-chip temperature sensor for monitoring system health. The SSM1268-B can be programmed via an I2C/SMBus compatible periportal and is powered from a 3.3V supply.