UG149: Si5344H Evaluation Board Users Guide The Si5344H-EVB is used for evaluating the Si5344H Any-Frequency, Any-Output, Jit- th ter Attenuating Clock Multiplier. The Si5344H combines 4 generation DSPLL and Mul- EVB FEATURES: tisynth technologies to enable any-frequency clock generation for applications that require the highest level of jitter performance. The Si5344H-EVB has two independent Powered from USB port or external power input clocks and four independent output clocks. The Si5344H-EVB can be controlled supply. and configured using the ClockBuilder Pro (CBPro) software tool. Onboard 48 MHz XTAL or Reference SMA Inputs allow holdover mode of operation on the Si5344H. CBPro GUI-programmable VDD supply allows the device to operate from 3.3, 2.5, or 1.8 V. CBPro GUI-programmable VDDO supplies allow each of the ten outputs to have its own supply voltage, selectable from 3.3, 2.5, or 1.8 V. CBPro GUI-controlled voltage, current, and power measurements of VDD and all VDDO supplies. Status LEDs for power supplies and control/status signals of Si5344H. SMA connectors for input clocks, output clocks, and optional external timing reference clock. Si5344H Evaluation Board Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 1.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26, 2021 1UG149: Si5344H Evaluation Board Users Guide Overview 1. Overview 1.1 Functional Block Diagram A functional block diagram of the Si5344H-EVB is shown below. This EVB can be connected to a PC via the main USB connector for programming, control, and monitoring. See Section 1.2 Si5344H EVB Support Documentation or Section 1.3 Quick Start for more information. Main USB Power only +5V USB Connector Power Supply Ext +5V +5V Ext Connector VDDMCU I2C/SPI Bus I2C/SPI Bus C8051F380 Control/ Status MCU + Peripherals INTR Alarm Status Si5344H 48 MHz XA XTAL XB IN 0 OUT 0 Input Output Input Clock 0 Output Clock 0 Termination Termination IN 0B OUT 0B IN 1 OUT 1 Input Output Input Clock 1 Output Clock 1 Termination Termination IN 1B OUT 1B OUT 2 Output Output Clock 2 Termination OUT 2B OUT 3 Output Output Clock 3 Termination OUT 3B Figure 1.1. Si5344H-EVB Functional Block Diagram 1.2 Si5344H EVB Support Documentation The Si5344H EVB Schematic and Bill of Materials (BOM) can be found online at: