product brief s3086 description the s3086 continuous rate clock recovery unit (cru) is a variable rate clock recovery interface device. this device is suitable for use in applications such as sonet/sdh, fibre channel, fast ethernet, hdtv, es con, gigabit ethernet, and ds-3. the chip performs all necessary clock recovery functions in conformance with the telcordia 253, ieee 802.3, and smpte 292/184 transmission standards. the s3086 cru is capable of accepting a scrambled 30 mbps to 2.7 gbps serial nrz data stream. it can derive a data clock from the data stream and output the data stream retimed and aligned with a companion serial bit clock. the s3086 achieves its continuous rate capability in a piece-wise continuous manner. this means that the full operating range is provided through the selection of one of twenty six (26) overlapping bands which are uniquely identified/programmed a by 5-bit band select input bus. the s3086 is implemented using amccs proven phase lock loop (pll) technology. figure 1 shows a typical network application for the s3086. an external reference oscillator should be used for applications, including sonet/sdh, in which continuous down-stream clocking is a requirement under loss-of-signal (los) conditions. the s3086 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. amcc suggested interface devices s3055 oc-48/12/3 multi-rate transceiver s3057 oc-48 transceiver s3059 oc-48 transceiver s3067 oc-48/12/3 multi-rate transceiver features ? sige bicmos technology ? complies with telcordia and itu-t specifica- tions for jitter tolerance, jitter transfer and jit- ter generation ? on-chip high-frequency pll with loop filter for clock recovery ? programmable signal detect input active high or active low (lvttl and lvpecl input) ? supports clock recovery from 30 mbps to 2.7 gbps with no gaps ? capable of working at oc-48 with forward or correction (fec), oc-48, firewire, hdtv, ge, fc, oc-12, dtv, escon, oc-3, fddi, fe, oc-1 and ds-3 rates ? selectable optional reference clock ? (19.44/155.52 mhz for sonet rates or user defined for non-sonet rates) ? loss-of-lock indication ? low jitter serial interface ? +3.3 v single power supply ? compact 48-pin tqfp/tep green/rohs com- pliant package ? typical power 825 mw (serial clock enabled) ? typical power 700 mw (serial clock disabled) applications ? sonet/sdh/atm/oc-3/oc-12/oc-48 ? fibre channel ? gigabit ethernet/fast ethernet ? high definition television/digital television (hdtv/dtv) ? firewire ? fibre distributed data interface (fddi) ? enterprise systems connection (escon) ?ds-3 s3086 continuous rate clock recovery unit system block diagram with the s3086 ld network interface processor s3067 s3086 teib s3160 ld network interface processor s3067 s3086 teib s3160
s3086 specifications 6290 sequence dr. san diego, ca 92121 p 858 450 9333 f 858 450 9885 www.amcc.com for technical support, please call 1-800-840-6055 or 858-535-6517, or email support@amcc.com. amcc reserves the right to make changes to its products, its da tasheets, or related documentation, without notice and warrants its products solely pursuant to its terms and conditions of sale, only to su bstantially comply with the latest available data sheet. please consult amccs term and conditions of sale for its warranties and other terms, conditions and limitations. amcc may discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of releva nt information to verify, before placing orders, that the information is current. amcc do es not assume any liability arising out of the application or us e of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. amcc reserves the right to ship devices of higher grade in place of those of lower grade. amcc semiconductor products are not designed, intended, authorized , or warranted to be suitable for use in life-support applica tions, devices or systems or other critical applications. amcc is a registered trademark of applied micro circuits corporation. powerpc and the powerpc logo are registered trademarks of ibm corporation. all other trademarks are the property of their respective holders. copyright ? 2007 appli ed micro circuits corporation. all rights reserved. s3086_pb2016_v1.02_20070206
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