1 Introduction

PCI Express (PCIe) is a serial point-to-point interconnect standard developed by the Peripheral Component Interconnect Special Interest Group (PCI-SIG). The PCIe standard has been widely adopted in a broad range of applications including desktop personal computers, servers, storage devices, embedded computing, and networking and communications. One of the key advantages of using PCIe is its scalable data bandwidth and flexible clocking solutions. This application report will explore some of the standard clocking architectures for PCIe first and a reference clock test result with TI high speed multiplexers will be presented and discussed later.