PI6C557-05B

PI6C557-05B PCIe® 3.0 Clock Generator with 4 HCSL Outputs Product 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 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. 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 PCualpliancgitors PLL 2 GND Rr(IREF) CLK0 CLK0 CLK1 CLK1 CLK2 CCLLKK23 CLK3 VDDXD S0 S1 S2 X1 X2 PD OE GNDXD IR...