PCIe 3.0 Clock Generator
PI6C557-03B
PCIe® 3.0 Clock Generator with 2 HCSL Outputs
Features
ÎÎPCIe® 3.0 compliant àà PCIe 3.0 Phase jitter - 0...
Description
PI6C557-03B
PCIe® 3.0 Clock Generator with 2 HCSL Outputs
Features
ÎÎPCIe® 3.0 compliant àà PCIe 3.0 Phase jitter - 0.45ps RMS (High Freq. Typ.)
ÎÎLVDS compatible outputs ÎÎSupply voltage of 3.3V ±10% ÎÎ25MHz crystal or clock input frequency ÎÎHCSL outputs, 0.8V Current mode differential pair ÎÎJitter 35ps cycle-to-cycle (typ) ÎÎSpread of -0.5%, -0.75%, and no spread ÎÎIndustrial temperature range ÎÎSpread Bypass option available ÎÎSpread and frequency selection via external pins ÎÎPackaging: (Pb-free and Green)
àà 16-pin TSSOP (L16) àà 16-pin QSOP (Q16)
Description
The PI6C557-03B 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 PI6C557-03B provides two differential (HCSL) or LVDS spread spectrum outputs. The PI6C557-03B is configured to select spread and clock selection. Using Pericom's patented PhaseLocked Loop (PLL) techniques, the device takes a 25MHz crystal input and produces two pairs of differential outputs (HCSL) at 25MHz, 100MHz, 125MHz and 200MHz clock frequencies. It also provides spread selection of -0.5%, -0.75%, and no spread.
Block Diagram
Pin Configuration (16-Pin TSSOP)
SS1:SS0 2
S1:S0 2
X1/CLK 25 MHz crystal or clock X2
Pulling Capacitors
VDD 2
Control Logic
Phase Lock Loop
Crystal Driver
2 GND
RR OE
CLK0 CLK0
CLK1 CLK1
S0 S1 SS0 X1/CLK X2 OE GNDX SS1
1 2 3 4 5 6 7 8
16 VDDX 15 CLK0 1...
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