Si5315-EVB SI5315-EVB USERS GUIDE Description The Si5315 Evaluation Board Users Guide provides for output ports that are AC terminated to 50 ohms and a complete and simple evaluation of the functions, then AC coupled to the Si5315. The XA-XB reference is features, and performance of the Si5315-EVB. usually a 40 MHz crystal however, there are provisions for an external XA-XB reference clock (either differential The Si5315 Synchronous Ethernet/Telecom jitter or single ended). attenuating clock multiplier has a comprehensive feature set, including any-rate frequency synthesis, The evaluation board (EVB) can be powered using two multiple clock inputs, multiple clock outputs, alarm and different approaches: external power supplies or by status outputs, hitless switching between input clocks, USB. Jumper plugs are provided to select between and programmable output clock signal format (LVPECL, these two options. Jumper plugs are used to strap the LVDS, CML, CMOS). For more details, consult the device pins for the various pin value options. Status Skyworks Solutions timing products website at: outputs are available on a ribbon connector header. Si5315-EVB 1. Introduction The Si5315 is a jitter-attenuating clock multiplier for Gb and 10G Synchronous Ethernet, SONET/SDH, and PDH (T1/E1) applications. The Si5315 accepts dual clock inputs ranging from 8 kHz to 644.53 MHz and generates two equal frequency-multiplied clock outputs ranging from 8 kHz to 644.53 MHz. The input clock frequency and clock multiplication ratio are selectable from a table of popular SyncE and T1/E1 rates. The Si5315 is based on Skyworks Solutions 3rd-generation DSPLL technology, which provides any-rate frequency synthesis and jitter attenuation in a highly integrated PLL solution that eliminates the need for external VCXO and loop filter components. The DSPLL loop bandwidth is user programmable, providing jitter performance optimization at the application level. Refer to the Si5315 data sheet for technical details of the device. Front Back Figure 1. Si5315 EVB 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 0.2 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice October 4, 2021