Si52146 PCI-EXPRESS GEN 1, GEN 2, GEN 3, & GEN 4 SIX OUTPUT CLOCK GENERATOR Features PCI-Express Gen 1, Gen 2, Gen 3, 25 MHz crystal input or clock input and Gen 4 common clock compliant 2 I C support with readback Gen 3 SRNS Compliant capabilities Supports Serial-ATA (SATA) at Triangular spread spectrum profile 100 MHz for maximum electromagnetic Low power push-pull HCSL interference (EMI) reduction compatible differential outputs Industrial temperature: No termination resistors required 40 to 85 C Dedicated output enable pins for 3.3 V Power supply each clock 32-pin QFN package Pin selectable spread control Ordering Information: Up to six PCI-Express clock outputs See page 18 Applications Network attached storage Wireless access point Pin Assignments Multi-function printer Switches Description The Si52146 is a high-performance, PCIe clock generator that can source six 32 31 30 29 28 27 26 25 PCIe clocks from a 25 MHz crystal or clock input. The clock outputs are VDD DIFF 1 24 VDD DIFF compliant to PCIe Gen 1, Gen 2, Gen 3, Gen 3 SRNS and Gen 4 common 1 OE DIFF2 2 23 DIFF5 clock specifications. The device has six output enable control pins for 2 SSON 3 22 DIFF5 enabling and disabling differential outputs. A spread spectrum control pin for 1 4 21 VDD DIFF OE DIFF3 33 GND EMI reduction is also available. The small footprint and low power 1 5 20 DIFF4 OE DIFF4 1 OE DIFF5 6 19 DIFF4 consumption makes the Si52146 the ideal clock solution for consumer and NC 7 18 DIFF3 embedded applications. Measuring PCIe clock jitter is quick and easy with the VDD DIFF 8 17 DIFF3 Skyworks Solutions PCIe Clock Jitter Tool. Download it for free at 14 15 16 9 10 11 12 13 Si52146 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.4 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 1, 2021