GS6151 datasheet(2/77 Pages) SEMTECH

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GS6151

Final Data Sheet

Rev.4

PDS-060389

August 2015

2 of 77

Semtech

Proprietary & Confidential

www.semtech.com

The device can operate without an external 27MHz

frequency reference. For applications which require rapid

signal lock, an external 27MHz reference may be used to set

the VCO frequency when not locked to the input signal. The

presence of an external reference crystal is automatically

detected by the device.

In systems that require passing of non-supported data

rates, the GS6151 can be configured to either automatically

or manually enter a bypass mode in order to pass the signal

without reclocking.

A four-wire Gennum Serial Peripheral Interface (GSPI)

facilitates configuration and status monitoring of the

device. Multiple GS6151 devices can be daisy-chained

together with a single 4-pin connection to the host system.

This device is Pb-free, and the encapsulation compound

does not contain halogenated flame retardant. This

component and all homogenous sub-components are

RoHS compliant.

GS6151 Functional Block Diagram

GPIO0

DDI_SEL/

STROBE

DDI1

DDI0

XTAL_CLK_IN

XTAL_CLK_OUT

XTAL_BUF_OUT

XTAL

Oscillator

Buffer

Phase Frequency

Detector

Phase Detector

Reference Divide

LOS

Detect

Control

Selectable Divide

Charge Pump

VCO

Retimer

Equalizer/

Data Mux

SPI

DDO0

DDO1

Data Buffer

LF+, LF–

Oscillator

DDO1

DDO0

DDI0

DDI1

GPIO1

Data Buffer

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