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The PI6C557-01B is a spread spectrum clock generator compli- ant to PCI Express® 3.0 and Ethernet requirements. The device is used for PC or embedded systems to substantially reduce Electro- magnetic Interference (EMI).
The PI6C557-01B provides one differential (HCSL) or LVDS spread spectrum output. Using Diodes' patented Phase-Locked Loop (PLL) techniques, the device takes a 25MHz crystal input and produces one pair of differential outputs (HCSL) at 100MHz. It also provides spread selection of -0.5% and no spread.