SI5342 datasheet, PDF - EEWORLD Datasheet

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SI5342: Description10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER; File Size1MB，62 Pages; ManufacturerSILABS; Websitehttp://www.silabs.com

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SI5342 Overview

10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER

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S i5345/44/4 2

10 -C

H A N N E L

, A

N Y

- F

R E Q U E N C Y

, A

N Y

-O

U T P U T

I T T E R

T T E N U A T O R

/ C

L O C K

U L T I P L I E R

Features



Generates any combination of output



Optional zero delay mode

frequencies from any input frequency



Fastlock feature for low nominal

Input frequency range:

bandwidths



Differential: 8 kHz to 750 MHz



Glitchless on the fly output frequency



LVCMOS: 8 kHz to 250 MHz

changes

Output frequency range:



DCO mode: as low as 0.001 ppb steps.



Differential: up to 712.5 MHz



Core voltage



LVCMOS: up to 250 MHz



: 1.8 V ±5%

Ultra-low jitter:



DDA

: 3.3 V ±5%

<100 fs typ (12 kHz–20 MHz)



Independent output clock supply pins:

Programmable jitter attenuation

3.3 V, 2.5 V, or 1.8 V

bandwidth from 0.1 Hz to 4 kHz



Output-output skew: 20 ps typ

Meets G.8262 EEC Opt 1, 2 (SyncE)



Serial interface: I

C or SPI

Highly configurable outputs compatible



In-circuit programmable with

with LVDS, LVPECL, LVCMOS, CML,

non-volatile OTP memory

and HCSL with programmable signal



ClockBuilder Pro

software simplifies

amplitude

device configuration

Status monitoring (LOS, OOF, LOL)

Hitless input clock switching: automatic



Si5345: 4 input, 10 output, 64 QFN



Si5344: 4 input, 4 output, 44 QFN

or manual



Si5342: 4 input, 2 output, 44 QFN

Locks to gapped clock inputs



Temperature range: –40 to +85 °C

Automatic free-run and holdover



Pb-free, RoHS-6 compliant

modes

Ordering Information:

See section 8

Functional Block Diagram

Device Selector Guide

Grade

Si534fA

Si534fB

Si534fC

Si534fD

Max Output Frequency

712.5 MHz

350 MHz

712.5 MHz

350 MHz

Frequency Synthesis Modes

Integer+Fractional

Integer

Applications



OTN Muxponders and Transponders

10/40/100G networking line cards

GbE/10GbE/100GbE Synchronous

Ethernet (ITU-T G.8262)



Carrier Ethernet switches

SONET/SDH Line Cards

Broadcast video

Test and measurement

ITU-T G.8262 (SyncE) Compliant

Description

These jitter attenuating clock multipliers combine fourth-generation DSPLL and

MultiSynth™ technologies to enable any-frequency clock generation and jitter

attenuation for applications requiring the highest level of jitter performance. These

devices are programmable via a serial interface with in-circuit programmable non-

volatile memory (NVM) so they always power up with a known frequency configuration.

They support free-run, synchronous, and holdover modes of operation, and offer both

automatic and manual input clock switching. The loop filter is fully integrated on-chip,

eliminating the risk of noise coupling associated with discrete solutions. Further, the

jitter attenuation bandwidth is digitally programmable, providing jitter performance

optimization at the application level. Programming the Si5345/44/42 is easy with Silicon

Labs’

ClockBuilder Pro

software. Factory preprogrammed devices are also available.

Rev. 1.0 7/15

Si5345/44/42

Si5345/ 44/42

A B L E

O N T E N T S

1. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3. Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

4. Detailed Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

5. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

5.1. Frequency Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

5.2. DSPLL Loop Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

5.3. Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

5.4. External Reference (XA/XB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

5.5. Digitally Controlled Oscillator (DCO) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

5.6. Inputs (IN0, IN1, IN2, IN3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

5.7. Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

5.8. Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

5.9. Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

5.10. In-Circuit Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

5.11. Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

5.12. Custom Factory Preprogrammed Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

5.13. Enabling Features and/or Configuration Settings Unavailable in

ClockBuilder Pro for Factory Preprogrammed Devices . . . . . . . . . . . . . . . . . . . . . .43

6. Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

6.1. Addressing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

6.2. High-Level Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

7. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

8. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

8.1. Ordering Part Number Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

9. Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.1. Si5345 9x9 mm 64-QFN Package Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.2. Si5344 and Si5342 7x7 mm 44-QFN Package Diagram . . . . . . . . . . . . . . . . . . . . . .57

10. PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

11. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

12. Device Errata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Rev. 1.0

SI5342 Related Products

	SI5342	SI5344	SI5345
Description	10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER	10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER	10-CHANNEL, ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATOR/CLOCK MULTIPLIER

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