product brief s 3 4 8 5 description the s3485 sonet/sdh transc eiver chip is a fully integrated serializatio n/deserialization sonet multi-rate interface device. the s3485 receives a scrambled non-return-to-zero (nrz) signal and recovers the clock from the data. the chip performs all necessary serial-to-parallel and parallel-to-serial functions in conformance with the sonet/ sdh/ gigabit ethernet/ fibre channel/ hdtv/ escon/ dtv/ d1 transmission standards. the device is suitable for sonet- based wdm applications. the diagram in figure 1 shows a typical network application. on-chip clock synthesis is performed by the high-frequency phase-lo ck loop (pll) on the s3485 transceiver chip, allowing the use of a slower external transmit clock reference. the chip can be used with a divide by 16 reference clock in support of existing system clocking schemes. the low-jitter parallel lvds interface is compliant with the bit-error rate requirements of the telecordia and itu-t standards. the s3485 is packaged in a 121 pbga offering designers a small package outline. overview the s3485 transceiver implements sonet/ sdh/ gigabit ethernet/ fibre channel/ hdtv/ escon/ dtv/ d1 serial ization/deserialization and transmission functions. this chip can be used to implement the front end of sonet/ sdh/ gigabit ethernet/ fibre channel/ hdtv/ escon/ dtv/ d1 equipment, which consists primarily of the serial transmit interface and the serial receive interface. the chip handles all the functions of these two elements, including parallel-to-serial and serial-to-parallel conversion, clock generation, and system timing. the system timing circuitry consists of data stream management and clock distribution throughout the front end. of the listed bit rates, only the associated sonet/sdh, fibre channel and gigabit ethernet protocols have been validated to their respective standards. amcc has characterized the remaining bit rates with a prbs 2 31 pattern but has not validated their associated protocols against any known standard. it is the responsibility of the end user to evaluate and verify protocol/standards compliance for all other bits rates that are intend for use. features ? operational from 2.00 gbps to 3.00 gbps ?supports: ? oc-48 with or w/o fec ? oc-24 with or w/o fec ? oc-12 with or w/o fec ? oc-3 with or w/o fec ? hdtv (1.485 gbps) ? d1 (1.38 gbps) ? fibre channel (1062 mbps) ? 2 x fibre channel (2.124 gbps) ? gigabit ethernet (1.25 gbps) ? dtv (143.18 mbps) ? escon (200 mbps) ? low power (300 mw typical) ? built-in self test (bist) feature ? 121 pin pbga package with green/rohs com- pliant lead free option ? on-chip high-frequency pll for clock genera- tion and clock recovery ? 4-bit lvds parallel data path ? tx and rx lock detect indication ?serial loop timing mode ? line and diagnostic loopback mode for faulty node identification ? operational temperature range up to 85c ? dual 1.2 v and 1.8 v supply ? complies with oif sfi-4/telecordia/itu-t specifications transmitter features ? reference frequency of 155.52 mhz (or equiv- alent rate) ? 155.52 mhz (or equivalent rate) clock output ? internal, self-initializing fifo to decouple transmit clocks receiver features ? recovers clock from 2.00 to 3.00 gbps ? low-jitter cml differential or single-ended serial interface ? reference frequency of 155.52 mhz (or equiv- alent rate) applications ? sonet/sdh-based transmission systems ? sonet/sdh modules ? wavelength division multiplexing (wdm) ?section repeaters ? add drop multiplexers (adm) ? broad-band cross-connects ? fiber optic terminators ? fiber optic test equipment s3485 sonet/sdh/fec/fc/ge/hdtv/dtv/d1/esc on multirate 4-bit transceiver system block diagram with the s3485 otx orx otx orx otx orx otx orx otx orx otx orx otx orx otx orx 4 4 s19208 (niagra) s19208 (niagra) amcc s3485 4 4 amcc s3485 4 4 amcc s3485 4 4 4 4 4 4 4 4 4 4 amcc s3485 amcc s3485 amcc s3485 amcc s3485 amcc s3485
s3485 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 ? 2006 appli ed micro circuits corporation. all rights reserved. s3485_pb0832_v2.02_20061031 amcc suggested interface devices the sequence of operations is as follows: transmitter operations ? 4-bit parallel input ? parallel-to-serial conversion ? serial data output receiver operations ? serial input ? clock and data recovery ? serial-to-parallel conversion ? 4-bit parallel data and clock output internal clocking and control functions are transparent to the user. ganges (s19202) sts-192 pos/atm sonet/sdh mapper niagara (s19208) sts-192/48/12/3 dw/fec/pm and async mapper device danube (s4805) sonet/sdh sts-48/stm-16 framer/pointer processor ohio (s4806) sts-48/stm-16 sonet/sdh framer and atm/pos mapper
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