GS6150 Datasheet, PDF (2/64 Pages) Gennum Corporation – Automatic or Manual Rate Selection

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 GS6150 can be configured to either automatically
or manually enter a bypass mode in order to pass the signal
without reclocking.
A four-wire serial Gennum Serial Peripheral Interface (GSPI)
facilitates configuration and status monitoring of the
device. Multiple GS6150 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.
XTAL_CLK_OUT
XTAL_CLK_IN
XTAL_BUF_OUT
LF+, LF–
XTAL
Oscillator
Buffer
Reference Divide
DDI0
DDI0
DDI1
DDI1
DDI2
DDI2
DDI3
DDI3
Equalizer/
Data Mux
Phase
Frequency
Detector
Phase Detector
LOS
Detect
SPI
Retimer
Charge Pump
VCO
Selectable
Divide
Control
DDI_SEL[1:0]/
STROBE
GPIO0 GPIO1 GPIO2 GPIO3
GS6150 Functional Block Diagram
Data Buffer
DDO0
DDO0
Data
Buffer
DDO1
DDO1
Oscillator
GS6150
Final Data Sheet
PDS-060127
Rev.2
March 2015
www.semtech.com
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