SI5375B-A-BL datasheet, PDF - EEWORLD Datasheet

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SI5375B-A-BL: DescriptionPROC SPECIFIC CLOCK GENERATOR; Categorysemiconductor The embedded processor and controller; File Size269KB，54 Pages; ManufacturerSILABS; Websitehttp://www.silabs.com

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SI5375B-A-BL Overview

PROC SPECIFIC CLOCK GENERATOR

SI5375B-A-BL Parametric

Parameter Name	Attribute value
state	ACTIVE
terminal coating	NOT SPECIFIED
Microprocessor type	PROC specific clock generator

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Si5375

4-PLL A

- F

REQUENCY

RECISION

LOCK

ULTIPLIER

I T T E R

TTENUA TOR

Features



Highly integrated, 4–PLL clock



multiplier/jitter attenuator

Four independent DSPLLs

support any-frequency synthesis



and jitter attenuation

Four inputs/four outputs



Each DSPLL can generate any



frequency from 2 kHz to

808 MHz from a 2 kHz to

710 MHz input

Ultra-low jitter clock outputs:



350 fs rms (12 kHz– 20 MHz)



and 410 fs rms (50 kHz–80 MHz)



typical

Meets ITU-T G.8251 and

Telcordia GR-253-CORE OC-192



jitter specifications

Integrated loop filter with

programmable bandwidth as low

as 60 Hz

Simultaneous free-run and

synchronous operation

Automatic/manual hitless input

clock switching

Selectable output clock signal

format (LVPECL, LVDS, CML,

CMOS)

LOL and interrupt alarm outputs

C programmable

Single 1.8 V ±5% or 2.5 V ±10%

operation with high PSRR on-

chip voltage regulator

10x10 mm PBGA

Ordering Information:

See page 48.

Applications



High density any-port, any-

protocol, any-frequency line

cards



ITU-T G.709 OTN custom FEC



10/40/100G



OC-48/192, STM-16/64



1/2/4/8/10G Fibre Channel



GbE/10GbE Synchronous Ethernet



Carrier Ethernet, multi-service

switches and routers



MSPP, ROADM, P-OTS,

muxponders

Description

The Si5375 is a highly-integrated, 4-PLL, jitter-attenuating precision clock

multiplier for applications requiring sub 1 ps jitter performance. Each of the

DSPLL

clock multiplier engines accepts an input clock ranging from 2 kHz to

710 MHz and generates an output clock ranging from 2 kHz to 808 MHz. The

device provides virtually any frequency translation combination across this

operating range. For asynchronous, free-running clock generation

applications, the Si5375’s reference oscillator can be used as a clock source

for any of the four DSPLLs. The Si5375 input clock frequency and clock

multiplication ratio are programmable through an I

C interface. The Si5375 is

based on Silicon Laboratories' third-generation DSPLL

technology, which

provides any-frequency synthesis and jitter attenuation in a highly-integrated

PLL solution that eliminates the need for external VCXO and loop filter

components. Each DSPLL loop bandwidth is digitally-programmable,

providing jitter performance optimization at the application level. The device

operates from a single 1.8 or 2.5 V supply with on-chip voltage regulators with

excellent PSRR. The Si5375 is ideal for providing clock multiplication and

jitter attenuation in high port count optical line cards requiring independent

timing domains.

Rev. 1.0 8/12

Si5375

Si5375

ABLE

Section

ONTENTS

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Typical Phase Noise Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5. Si5375 Application Examples and Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.1. Schematic and PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2. Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3. SCL Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.4. RSTL_x Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.5. Reference Oscillator Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.6. Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.7. OSC_P and OSC_N Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6. Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

7. Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

7.1. ICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8. Pin Descriptions: Si5375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

9. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

10. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

11. Recommended PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

12. Top Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

12.1. Si5375 Top Marking (PBGA, Lead-Free) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

12.2. Top Marking Explanation (PBGA, Lead-Free) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

12.3. Si5375 Top Marking (PBGA, Lead-Finish) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

12.4. Top Marking Explanation (PBGA, Lead-Finish) . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Rev. 1.0

SI5375B-A-BL Related Products

	SI5375B-A-BL	SI5375	SI5375-EVB	SI5375B-A-GL
Description	PROC SPECIFIC CLOCK GENERATOR	PROC SPECIFIC CLOCK GENERATOR	PROC SPECIFIC CLOCK GENERATOR	808 MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA80
state	ACTIVE	ACTIVE	ACTIVE	ACTIVE
terminal coating	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Microprocessor type	PROC specific clock generator	PROC specific clock generator	PROC specific clock generator	PROC SPECIFIC CLOCK GENERATOR

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