Pericom Semiconductor PI6C557-05B
The PI6C557-05B is a spread spectrum clock generator compliant to PCI Express® 3.0 and Ethernet requirements. The device is used for PC or embedded systems to substantially reduce Electromagnetic Interference (EMI). The PI6C557-05B provides four differential (HCSL) or LVDS spread spectrum outputs.FEATURES
● PCIe® 3.0 complaint →PCIe 3.0 Phase jitter: 0.48ps RMS (High Freq. Typ.)● LVDS compatible outputs
● Supply voltage of 3.3V ±5%
● 25MHz crystal or clock input frequency
● HCSL outputs, 0.7V Current mode differential pair
● Jitter 40ps cycle-to-cycle (typ)
● Spread of -0.5%, -1.0%, -1.5%, and no spread
● Industrial temperature range
● Spread Bypass option available
● Spread and frequency selection via external pins
● Packaging: (Pb-free and Green) →20-pin, 173-mil wide TSSOP
DESCRIPTION
The PI6C557-05B is configured to select spread and clock selection. Using Pericom's patented Phase-Locked Loop (PLL) techniques, the device takes a 25MHz crystal input and produces four pairs of differential outputs (HCSL) at 100MHz and 200MHz clock frequencies. It also provides spread selection of -0.5%, -1.0%, -1.5%, and no spread. Block Diagram Pin Configuration VDD PD OE 2 S[2:0] 3 Spread Spectrum/ Output clock selection SS Circuitry 25 MHzX1/CLK crystal or clock X2 Crystal Driver PCualpli...