CS3157 - Applied Micro Circuits Corporation

– At a Glance –

Product Brief

S3157

GPON Transceiver With CDR

Empowering Intelligent Optical Networks 1

PB2023_v1.00_08/25/05

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.

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.

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 int erface. The chip

handles all the functions of these two

elements, including p arallel-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.

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 select able

• Interface to LVCMOS/LVTTL

logic

• Internal input termination

option built-in

• 16-bit differential LVPECL/

LVDS data path or single-

ended 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 inter-

face

• Internal FIFO to decouple

transmit clocks

Continued on next page...

Figure 1. System Block Diagram

TX: ½

Rate

Adaptation

FPGA

RX: 2.5 G,

1.25 G or

622 Mbps

FPGA

AMCC

S3157

16 ½

AMCC

S3157

OLT

16 ½

AMCC

S2060

Optical

Mux PON

Splitter E/O

O/E

CATV

1.25 Gbps

622 Mbps

155 Mbps

2.5 Gbps

1.25 Gbps

622 Mbps

ONU

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

Product Brief

S3157

GPON Transceiver With CDR

PB2023_v1.00_08/25/05

2Empowering Intelligent Optical Networks

Confidential and Proprietary

6290 Sequence Drive • San Diego, CA 92121 • Tel: 858 450-9333 • Fax: 858 450-9 885 • http://www.amcc.com

Distribute only on a need-to-know basis, and subj ect to applicable ND A. Not t o be disclos ed to or used by an y other person without prior aut horization.

AMCC Suggested Inte rface Device

AMCC S2060 Gigabit Ethernet Transceiver

• Dual 1.2 V and 3.3 V/2.5V sup-

ply

• Complies with ITU-T specifica-

tions

• Built-in self test

Applications

• GPOS-based transmission

systems

• GPON ONU (Optical Network

Unit)

• GPON OLT (Optical Line Ter-

mination)

• GPON test equipment

Figure 2. S3157 Ordering Information

Prefix PackageDevice

S – Integrated Circuit 3157 PB - 196 PBGA

XXXXX XX

Prefix Device Package