3/6-Port DS3/E3/STS-1 Integrated
Line Termination Device for Transport
M29323/6 –“Line-Card-on-a-Chip”
The M29323/6 provides a complete physical-layer solution
for flexible DS3/E3/STS-1 clear channel services. The
M29323/6 aggressively drives down cost for existing solu-
tions and as well as reduces PCB real-estate and power.
>
K E Y F E AT U R E S
>
High integration – LIUs with
DJAT, DS3/E3
framers/mappers, STS-1
framers/mappers, STS-
12/STM-4 framer
>
Flexibility – mix DS3, E3 and
STS-1 on one device
>
Easy implementation – TAP
software + high integration
= faster time-to-market
>
Parallel 8-bit, 77.76 MHz TDM
telecom bus
>
Embedded CLADs for
supported line rates
>
Pattern generator/detector
for BERT
>
Comprehensive loopbacks
Each port of the M29323/6 operates independently allowing
for a mix of DS3, E3 or STS-1 on the same device. This
enables ADMs/OEDs and MSPPs to deploy a single line card
that supports the simultaneous mapping for SDH or SONET
transport of both DS3 and E3.
The M29323/6 includes 3/6 independent DS3/E3/STS-1 line
interface units (LIUs) with built-in digital jitter attenuators
(DJAT), 6/12 DS3/E3 framers and 3/6 STS-1 framers. Each
port is capable of supporting DS3/E3/STS-1
mapped/demapped signals to/from SONET/SDH.
In addition, the M29323/6 supports pseudo-random bit
sequence (PRBS) testing and a full set of loopback
functions at different functional blocks.
The M29323/6 line side interfaces support electrical
DS3/E3/STS-1, requiring only the addition of transformers
and passive termination. The M29323/6 system interface
supports STS-12/STM-4 for the SONET/SDH traffic via a
standard 8-bit, 77 MHz TDM telecom bus. Thus, a channelized
OC-12/STM-4 or OC-3/STM-1 can be broken down to
DS3/E3/STS-1 streams by the M29323/6 on a channel-by-
channel basis.
Using the telecom application package (TAP) software
to abstract the physical registers, developers can easily
implement the M29323/6 solution, reducing design time.
The M29323/6 are offered in a 27mm FCBGA package.
The M29323/6 requires only one 19.44 MHz reference clock
(passive crystal) or 77.76/155.52 MHz SONET reference
clock for generating all the necessary internal line rate
clocks. The generated clocks are also available through
an output pin.
>
OH Access
M29326
12x
DS3/E3
Framers
6 Lines
DS3/E3/
STS-1E
(EC-1)
Lines
6x DS3/E3
or
STS-1E
LIU + DJAT
6x DS3/E3
to STS-1E
Mapper/
Demapper
OC-12
Mux/
Demux
Mini-
Framer
8-Bit 77 MHz
Telecorn
Bus
6x
STS-1
Framers
PRBS
Generator
and Monitor
Microprocessor
Interface
JTAG
Test I/F
STS-1 Overhead Access
Systems Control
STS-12 Overhead Access
M29326 Functional Block Diagram
Product Features
• 3/6 DS3/E3/STS-1 LIUs with jitter
attenuation/desynchronization
– Adaptive receive equalizer enables
> 1800 ft of cable reach
– Programmable transmit pulse
mask configuration
– Dynamic loop bandwidth to comply
with all standard intrinsic and
output jitter requirements
• 6/12 DS3/E3 framers support
DS3-M13, DS3-M23, DS3 C-bit
parity E3-G.751, E3-G.832
• 3/6 DS3/E3 mappers/demappers
supporting DS3/VC-3/AU-3;
DS3/TUG-3/AU-4; E3/VC-3/AU-3;
E3/TUG-3/AU-4
• 3/6 STS-1 SONET/SDH framers
support transport overhead access;
includes monitor and generator
• STS-12/STM-4 SONET/SDH TDM
supporting mapping/demapping of
12 STS-1E or AU-3 into/from STS
12/STM-4 frame
• Pointer processing
• Overhead insertion and extraction
• Parallel 77.76 MHz x 8-bit Telecom
bus interface
• Synchronous 16-bit microprocessor
interface bus at 30–77 MHz bus rate
– Glueless connection to
Motorola MPC860
• Local (source) and remote (line)
capability at various internal
points in the device
• PRBS detector and generator
supporting framed and unframed
modes
• JTAG (IEEE 1149.1) boundary scan
• Single rail 1.8 V core supply with
3.3 V LvTTL I/O, 1.8V LVDS I/O
• Embedded CLADs internally
generating the DS3, E3, STS-1 clocks
• -40C to +85C operation
Applications
• SONET/SDH ADM/OED
• MSPP
• Optical ADM
• DCS
• NGDLC
• Class V voice switch
Ordering Information
• M29323-12P
• M29326-12P
www.mindspeed.com/salesoffices
General Information:
Headquarters – Newport Beach
4000 MacArthur Blvd., East Tower
Newport Beach, CA 92660-3007
29323/6-BRF-001-A M04-0928
© 2004 Mindspeed Technologies
™
. All rights reserved. Mindspeed and the Mindspeed
logo are trademarks of Mindspeed Technologies. All other trademarks are the property
of their respective owners. Although Mindspeed Technologies strives for accuracy in all
its publications, this material may contain errors or omissions and is subject to change
without notice.
This material is provided as is and without any express or implied
warranties, including merchantability, fitness for a particular purpose and non-
infringement.
Mindspeed Technologies shall not be liable for any special, indirect, inci-
dental or consequential damages as a result of its use.
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