S2060

S3157 GPON Transceiver With CDR The low jitter LVPECL interface is compliant with the bit-error rate requirements of the ITU-T standards. The S3157 is packaged in a 196 PBGA, offering designers a small package outline. Product Brief PB2023_v1.00_08/25/05 – At a Glance – Features • • • 650 mW typical power Integrated clock data recovery On-chip high-frequency PLL for clock generation and clock recovery Supports OC-48/24/12 rates Reference frequency of 155.52 to 166.63 MHz RX and TX reference selectable Interface to LVCMOS/LVTTL logic Internal input termination option built-in 16-bit differential LVPECL/ LVDS data path or singleended LVPECL option 196 PBGA package Diagnostic and line loopback mode Support serial loop timing mode Lock detect Signal detect input with polarity select Low Jitter LVPECL/LVDS interface Internal FIFO to decouple transmit clocks Overview The S3157 transceiver implements GPON serialization/deserialization, and transmission functions. This chip can be used to implement the front end of GPON 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 S3157 is divided into a transmitter section and a receiver section. The sequence of operations is as follows: Transmitter Operations: 1. 16-bit parallel input 2. Parallel-to-serial conversion 3. Serial output Receiver Operations: 1. Clock and data recovery from serial input 2. Serial-to-parallel conversion 3. 16-bit parallel output Due to the asynchronous nature of the GPON, the FPGA that connects to the S3157 has to accommodate for the 1/2 upstream data rate. • • • • • • Description The S3157 GPON transceiver chip is a fully integrated serialization/ deserialization GPON OC-48/24/12 transceiver interface device. The S3157 receives an OC-48/24/12 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 GPON transmission standards. The device is suitable for GPON-based applications. The figure below shows a typical network application. On-chip clock synthesis is performed by the high-frequency Phase-Locked Loop (PLL) on the S3157 transceiver chip allowing the use of a slower external transmit clock reference. The chip can be used with a 155.52 or 166.63 MHz reference clock in support of existing system clocking schemes. • • • • • • • Continued on next page... OLT 16 ½ AMCC S2060 Optical Mux 16 ½ AMCC S3157 PON Splitter E/O O/E ONU 16 TX: ½ Rate Adaptation FPGA 16 RX: 2.5 G, 1.25 G or 622 Mbps 1.25 Gbps 622 Mbps 155 Mbps FPGA AMCC S3157 2.5 Gbps 1.25 Gbps 622 Mbps CATV Figure 1. System Block Diagram Empowering Intelligent Optical Networks 1 S3157 GPON Transceiver With CDR AMCC Suggested Interface Device AMCC S2060 Gigabit Ethernet Transceiver Product Brief PB2023_v1.00_08/25/05 • • • Dual 1.2 V and 3.3 V/2.5V supply Complies with ITU-T specifications Built-in self test Applications • • Prefix S – Integrated Circuit Device 3157 Package PB - 196 PBGA • • GPOS-based transmission systems GPON ONU (Optical Network Unit) GPON OLT (Optical Line Termination) GPON test equipment X Prefix XXXX Device XX Package Figure 2. S3157 Ordering Information AMCC reserves the right to make changes to its products, or to discontinue any product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied upon is current. AMCC is a registered trademark of Applied Micro Circuits Corporation. Copyright © 2005 Applied Micro Circuits Corporation. All Rights Reserved. Distribute only on a need-to-know basis, and subject to applicable NDA. Not to be disclosed to or used by any other person without prior authorization. Confidential and Proprietary 6290 Sequence Drive • San Diego, CA 92121 • Tel: 858 450-9333 • Fax: 858 450-9885 • http://www.amcc.com 2 Empowering Intelligent Optical Networks