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Product Brief

INDUS

STS-192 SONET/SDH Interleaver/Disinterleaver

Part Number S19201CAI12, Revision 2.9, March 2003

Overview and Applications

SONET Processing

The S19201 can be used in either SONET or SDH applica-

tions. On the high-speed side, it interfaces to a STS-192/

STM-64 signal in each direction. On the low-speed side, it

interfaces to four STS-48/STM-16 signals in each direction.

The S19201 can be used in conjunction with AMCC’s

RHINE, MISSOURI, or DANUBE chips for terminating

STS-48/STM-16 payloads.

In the multiplex direction, the S19201 accepts four 16-bit

parallel STS-48/STM-16 (155 Mb/s) signals. The S19201

locates the STS-48/STM-16 frames, descrambles the data,

processes the TOH bytes (or SOH bytes in SDH mode),

muxes the four STS-48/STM-16 tributaries.

This muxed signal, or the STS-192 from the demux input is

then selected as the input to the FRGEN192. The S19201

then generates the TOH bytes (or SOH bytes in SDH

mode), performs frame synchronous scrambling, and out-

puts the data onto a 16-bit bus.

In the demultiplex direction, the S19201 accepts a 16-bit

wide STS-192/STM-64 signal. The S19201 locates frame

in this signal, performs descrambling, and processes the

TOH bytes. This signal is then selected for disinterleaving.

The four tributaries are then output on four 16-bit parallel

interfaces.

A TOH/SOH interface provides direct add/drop capability

for both Section and Line overhead.

On the multiplex side the S19201 generates section and

line overhead. It performs framing pattern insertion (A1,

A2), scrambling, alarm signal insertion, and generates sec-

tion and line Bit Interleaved Parity (B1/B2) for far-end per-

formance monitoring.

On the Demux side the S19201 processes section and line

overhead. It performs framing (A1, A2), descrambling,

alarm detection, bit interleaved parity monitoring (B1/B2),

and error count accumulation for performance monitoring.

High-Speed Interface

On the high-speed side, the S19201 supports 16-bit paral-

lel high-speed interfaces, operating at 622 MHz, on both

the multiplex and demultiplex side.

Low-Speed Interface

On the low-speed side, the S19201 supports four 16-bit

parallel high-speed interfaces operating at 155 MHz.

MX_DATA_OUT[15:0]

SYS_CLK_IN

DX_CLK_IN

DX_DATA_IN[15:0]

SerRxD±

SerTxD±

Microprocessor

Control

Control

Reference

Clock

Fiber Optic

Transceiver

SONET

Line Side

Interface

DX_LOSEXT

S19201

AMCC

Addr

Data

13

TOH Insertion

and Extraction

OC-192

Line Interface

AMCC S19211

16

MX_DATA_IN_[1]_[15:0]

DX_DATA_OUT_[1]_[15:0] RHINE/

Multi

Channel

Link Layer

Device

RHINE - IP ROUTER

Switching/

Routing

Logic

MX_CLK_OUT

MISSOURI

RHINE/

MISSOURI

RHINE/

MISSOURI

RHINE/

MISSOURI

MISSOURI - DCS FABRIC

P/S

with

Clk Recovery

&

S/P

SONET RCVR

SONET XMIT

MX_DATA_IN_[2]_[15:0]

DX_DATA_OUT_[2]_[15:0]

MX_DATA_IN_[3]_[15:0]

DX_DATA_OUT_[3]_[15:0]

MX_DATA_IN_[4]_[15:0]

DX_DATA_OUT_[4]_[15:0]

Figure 2: Typical Applications: S19201 in a STS-192/AU-4-64 Channelized System