UG277: Si52204-EVB User s Guide 4-Output PCI-Express Gen1/2/3/4 and SRIS Clock Generator KEY FEATURES Evaluation Board Evaluation of Silicon Labs Si52204 This document describes operation of the Silicon Laboratories Si52204-EVB evaluation board designed to evaluate the Si52204, 4-output PCI-Express Gen1/2/3/4 and SRIS DC-coupled differential output clocks Clock Generator. Selector switches make it easy to select the voltage for both core DC-coupled single-ended reference clock and IO supplies. Jumpers allow for easy static configuration of the control inputs as External power or USB powered well as provide a port for external test equipment access. Similarly, each regulated Switchable voltage settings supply can be bypassed and driven externally for precise voltage control or to measure Easy manual configuration via jumpers PSRR performance. I2C ports allow for communication to the DUT by external I2C I2C port access bus analyzers/exercisers. Optimal XTAL placement and layout provide excellent phase noise performance. Convenient probe pads and isolation resistors permit on-board Easy current measurement single-ended or differential measurements. Finally, the PCB layout optimizes signal integrity and skew which rounds out the capabilities of this EVB. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 2.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26, 2021 1UG277: Si52204-EVB User s Guide Functional Description 1. Functional Description The Si52204-EVB is an evaluation board designed to support the Si52204 device. The Si52204-EVB is designed to operate in one of two general operational modes: 1. Stand-alone mode: The stand-alone mode is for manual evaluation of the device. Control of device pins such as OE xb, FS, PWRGD, REF SA, and SS EN is done via on-board jumpers. The jumper header (J14) also allows the user to test the enable/disable time by providing an access point for external test equipment to easily drive the enable or PWRGD pins. The DUT supply voltages (e.g. VDD, VDDR, VDDX, VDDA, and VDDIO) can be set via on-board switches as shown in Section 2. Each supply can be sourced either by an on-board regulator for nominal values or via an external supply to test the device over a range of voltages (e.g. min/max supply testing). 2. I2C mode: The Evaluation Board also allows the user to setup the device via I2C commands using an external I2C driver/analyzer and connecting to the SCL/SDA header (JP7). Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 2.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26, 2021 2