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S3056

AMCC
Part Number S3056
Manufacturer AMCC
Description MULTI-RATE SONET/SDH CLOCK RECOVERY UNIT
Published Jan 5, 2015
Detailed Description DEVICE SMPEUCLITFIIC-RATAIOTEN SONET/SDH CLOCK RECOVERY UNIT BMiUCLMTOI-SRAPTEECLSOCNLEOTC/KSDGHECNLEORCAKTORRECOVERY UN...
Datasheet PDF File S3056 PDF File

S3056
S3056

Overview
DEVICE SMPEUCLITFIIC-RATAIOTEN SONET/SDH CLOCK RECOVERY UNIT BMiUCLMTOI-SRAPTEECLSOCNLEOTC/KSDGHECNLEORCAKTORRECOVERY UNIT ® S3056 S3056 FEATURES • SiGe BiCMOS technology • Complies with Bellcore and ITU-T specifications for jitter tolerance, jitter transfer and jitter generation • On-chip high frequency PLL with internal loop filter for clock recovery • Supports clock recovery for: OC-48 (2488.
32 Mbps), Fibre Channel (2125 Mbps), OC-24 (1244.
16 Mbps), Gigabit Ethernet (1250 Mbps), Fibre Channel (1062.
5 Mbps), OC-12 (622.
08 Mbps), OC-3 (155.
52 Mbps) NRZ data • Selectable reference frequencies 19.
44 MHz or 155.
52 MHz (or equivalent Fibre Channel/ Gigabit Ethernet frequencies) • Lock detect—monitors frequency of incoming data • Low-jitter serial interface • +3.
3 V supply • Compact 48 pin TQFP TEP package • Typical power 620 mW GENERAL DESCRIPTION The function of the S3056 clock recovery unit is to derive high speed timing signals for SONET/SDHbased equipment.
The S3056 is implemented using AMCC’s proven Phase Locked Loop (PLL) technology.
Figure 1 shows a typical network application.
The S3056 receives an OC-48, OC-24, OC-12, OC-3, Fibre Channel or Gigabit Ethernet scrambled NRZ signal and recovers the clock from the data.
The chip outputs a differential bit clock and retimed data.
The S3056 utilizes an on-chip PLL which consists of a phase detector, a loop filter, and a Voltage Controlled Oscillator (VCO).
The phase detector compares the phase relationship between the VCO output and the serial data input.
A loop filter converts the phase detector output into a smooth DC voltage, and the DC voltage is input to the VCO whose frequency is varied by this voltage.
A block diagram is shown in Figure 2.
Figure 1.
System Block Diagram 16 16 OTX ORX S3056 S3057 16 S3056 ORX OTX S3057 16 Network Interface Processor Network Interface Processor October 31, 2000 / Revision J 1 S3056 MULTI-RATE SONET/SDH CLOCK RECOVERY UNIT S3056 OVERVIEW The S3056 supports clock r...


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