Si53156 PCI-EXPRESS GEN 1, GEN 2, GEN 3, AND GEN 4 FANOUT BUFFER Features PCI-Express Gen 1, Gen 2, Gen 3, Six PCI-Express buffered clock and Gen 4 common clock compliant outputs Supports Serial ATA (SATA) at Clock input spread tolerable 100 MHz Supports LVDS outputs 2 100210 MHz operation I C support with readback Low power, push pull, differential capabilities output buffers Extended temperature: Internal termination for maximum o 40 to 85 C integration 3.3 V power supply Dedicated output enable pin for each 32-pin QFN package output Ordering Information: See page 17. Applications Network attached storage Wireless access point Multi-function printers Routers Pin Assignments Description The Si53156 is a spread spectrum tolerant PCIe clock buffer that can source six PCIe clocks simultaneously. The device has six hardware output enable control 32 31 30 29 28 27 26 25 inputs for enabling the respective differential outputs on the fly. The device also VDD VDD 1 24 2 2 features output enable control through I C communication. I C programmability is 2 23 DIFF5 OE2* also available to dynamically control skew, edge rate and amplitude on the true, VDD 3 22 DIFF5 compliment, or both differential signals on the clock outputs. This control feature VDD OE3* 4 21 33 GND enables optimal signal integrity as well as optimal EMI signature on the clock out- 5 20 DIFF4 OE4* 19 puts. Measuring PCIe clock jitter is quick and easy with the Skyworks Solutions OE5* 6 DIFF4 PCIe Clock Jitter Tool. Download it for free at Si53156 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.3 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 3, 2021