SI5316-B-GM datasheet(6/16 Pages) SILABS

No. de pieza	SI5316-B-GM

Descripción Electrónicos	PRELIMINARY DATA SHEET PRECISION CLOCK JITTER ATTENUATOR

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Fabricante Electrónico	SILABS [Silicon Laboratories]

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Si5316

6

Preliminary Rev. 0.24

1. Functional Description

The Si5316 is a precision jitter attenuator for high-speed

communication systems, including OC-48, OC-192,

10G Ethernet, and 10G Fibre Channel. The Si5316

accepts dual clock inputs in the 19, 38, 77, 155, 311, or

622 MHz frequency range and generates a jitter-

attenuated clock output at the same frequency. Within

each of these clock ranges, the device can be tuned

approximately 15% higher than nominal SONET/SDH

frequencies, up to a maximum of 710 MHz in the

622 MHz range. The Si5316 is based on Silicon

Laboratories' 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. For applications which require input clocks

at different frequencies, the frequency of CKIN1 can be

1x, 4x, or 32x the frequency of CKIN2 as specified by

the CK1DIV and CK2DIV inputs.

The Si5316 PLL loop bandwidth is selectable via the

BWSEL[1:0] pins and supports a range from 100 Hz to

7.9 kHz. To calculate potential loop bandwidth values

for a given input/output clock frequency, Silicon

Laboratories offers a PC-based software utility,

DSPLLsim, that calculates valid loop bandwidth settings

automatically. This utility can be downloaded from

www.silabs.com/timing.

The Si5316 supports manual active input clock

selection. The Si5316 monitors both input clocks for

loss-of-signal and provides a LOS alarm when it detects

missing pulses on either input clock. Hitless switching is

not supported by the Si5316. During a clock transition,

the phase of the output clock will slew at a rate defined

by the PLL loop bandwidth until the original input clock

phase to output clock phase is restored. The device

monitors the lock status of the PLL. The lock detect

algorithm works by continuously monitoring the phase

of the input clock in relation to the phase of the

feedback clock.

The Si5316 has one differential clock output. The

electrical format of the clock output is programmable to

support LVPECL, LVDS, CML, or CMOS loads. For

system-level debugging, a bypass mode is available

which drives the output clock directly from the input

clock, bypassing the internal DSPLL. The device is

powered by a single 1.8, 2.5, or 3.3 V supply.

1.1. External Reference

An

external,

38.88 MHz

clock

or

a

low-cost

114.285 MHz 3rd overtone crystal is used as part of a

fixed-frequency oscillator within the DSPLL. This

external reference is required for the device to perform

jitter attenuation. Silicon Laboratories recommends

using a high-quality crystal from TXC (www.txc.com.tw),

part number 7MA1400014. An external 38.88 MHz

clock from a high quality OCXO or TCXO can also be

used as a reference for the device.

In digital hold, the DSPLL remains locked to this

external reference. Any changes in the frequency of this

reference when the DSPLL is in digital hold will be

tracked by the output of the device. Note that crystals

can have temperature sensitivities.

1.2. Further Documentation

Consult the Silicon Laboratories Any-Rate Precision

Clock Family Reference Manual (FRM) for more

detailed information about the Si5316. The FRM can be

downloaded from www.silabs.com/timing.

Silicon Laboratories has developed a PC-based

software utility called DSPLLsim to simplify device

configuration, including frequency planning and loop

bandwidth selection. This utility can be downloaded

from www.silabs.com/timing.

Número de pieza similar - SI5316-B-GM

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Descripción similar - SI5316-B-GM

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
Skyworks Solutions Inc.	SI5316	1Mb / 26P	PRECISION CLOCK JITTER ATTENUATOR Rev. 1.0
Silicon Laboratories	SI5366	763Kb / 20P	PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR
Skyworks Solutions Inc.	SI5366	613Kb / 31P	PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR Rev. 1.0
Silicon Laboratories	SI5324C-C-GM	518Kb / 72P	ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/ JITTER ATTENUATOR
Skyworks Solutions Inc.	SI5323	2Mb / 40P	PIN-PROGRAMMABLE PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR Rev. 1.1
Silicon Laboratories	SI5323	647Kb / 16P	PIN-PROGRAMMABLE PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR
Skyworks Solutions Inc.	SI5326	550Kb / 71P	ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR Rev. 1.0
Silicon Laboratories	SI5326	619Kb / 16P	ANY-RATE PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR
Silicon Laboratories	SI5326C-C-GM	381Kb / 72P	ANY FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR
Skyworks Solutions Inc.	SI5324	1Mb / 72P	ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/ JITTER ATTENUATOR Rev. 1.1

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SI5316-B-GM Datasheet(PDF) 6 Page - Silicon Laboratories

SI5316-B-GM Datasheet(HTML) 6 Page - Silicon Laboratories

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