SI5316-EVB Datasheet, PDF(3/26 Page) Silicon Laboratories – The Si531x/2x Any-Frequency Precision Clocks

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SI5316-EVB Datasheet, PDF (3/26 Pages) Silicon Laboratories – The Si531x/2x Any-Frequency Precision Clocks

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Si531x-EVB Si532x-EVB

3. Features

The Si5316-EVB, Si5319-EVB, Si5322/23-EVB, Si5324-EVB, Si5325/26-EVB, and Si5327-EVB each include the

following:

ï® CD with documentation and EVB software including the DSPLLsim configuration software utility

ï® USB cable

ï® EVB circuit board including an Si5316 (Si5316-EVB), Si5319 (Si5319-EVB), Si5323 (Si5322/23-EVB), Si5324

(Si5324-EVB), Si5326 (Si5325/26-EVB), or Si5327 (Si5327-EVB).

ï® User's Guide (this document)

4. Si5316-EVB, Si5319-EVB, Si5322/23-EVB, Si5324-EVB, Si5325/26-EVB,

and Si5327-EVB Quick Start

1. A CD-ROM is included with the evaluation board. On this CD, there is a file named âinstall_instructions.PDFâ.

This file gives the detailed instructions on how to install the drivers and software that control the evaluation

board.

2. Connect the two power supplies to the EVB. One is 3.3 V and the other is 1.8, 2.5, or 3.3 V. The DUT is

3. Turn on the power supplies.

4. Connect a USB cable from the EVB to the PC where the software was installed.

5. Install USB driver.

6. Launch software by clicking on Startï®Programsï®Silicon Laboratoriesï®Precision Clock EVB Software

and selecting one of the programs.

5. Functional Description

The Si531x/2x-EVB software allows for a complete and simple evaluation of the functions, features, and

performance of the Si531x/2x Any-Frequency Precision Clocks.

5.1. Narrowband versus Wideband Operation

This document describes six evaluation boards: Si5316, Si5319, Si5322/23, Si5324, Si5325/26, and Si5327. The

Si5316 and Si5322/23 evaluation boards are for pin controlled clock parts and the Si5319, Si5324, Si5325/26, and

Si5327 are for clock parts that are to be controlled by an MCU over a serial port. The Si5316-EVB, Si5319-EVB,

Si5324-EVB, and Si5327-EVB support only one part, while the two other boards each support two parts: one that is

wideband (the Si5322 and the Si5325) and one that is narrowband (the Si5323 and the Si5326). The narrowband

parts are both capable of operating in the wideband mode, so evaluation of the wideband parts can be done by

using a narrowband part in wideband mode. As such, these evaluation boards are only populated with narrowband

parts.

The Si5324-EVB and Si5327-EVB are special cases because the Si5324 and Si5327 have a lower loop bandwidth

and do not support wideband operation. Because of the lower loop bandwidth, the lock times are increased and the

Si5324 and Si5327 will be more sensitive to XA-XB reference crystal temperature changes. For this reason, a

20 ppm crystal is used on the SI5324-EVB. It should be noted that the 20 ppm crystal is used for its temperature

stability, not its absolute accuracy. If the crystal will undergo significant changes in temperature, it is suggested that

the crystal be thermally insulated by covering it with foam tape or some other means.

To evaluate Si5322 device operation using the Si5322/23-EVB, the RATE[1:0] pins must be set to LL using the

jumpers provided. To evaluate Si5325 device operation using the Si5325/26-EVB, the Precision Clock EVB

Software should be configured for wideband mode. For details, see the Precision Clock EVB Software

documentation.

Rev. 0.6

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