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XRT86SH328 Datasheet(PDF) 1 Page - Exar Corporation

Part # XRT86SH328
Description  SONET TO 28-T1/21-E1 PDH MAPPER - VOYAGER PIN AND ARCHITECTURE DESC
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT86SH328 Datasheet(HTML) 1 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XRT86SH328
SONET TO 28-T1/21-E1 PDH MAPPER - VOYAGER PIN AND ARCHITECTURE DESC
AUGUST 2008
REV. 1.0.1
GENERAL DESCRIPTION
The XRT86SH328 (Voyager) is a physical layer
SONET/SDH
to
PDH
mapper/demapper
which
enables T1/E1 aggregation to STS-3/STM-1 or STS1/
STM0 via standard VT1.5/VT2 or VC-11/VC-12 to
AU-3 and TUG-3/AU-4 mapping protocols. Voyager
supports all the framing, mapping and grooming
functions
required
for
STS-3/STM-1
mapper
applications. The device generates and terminates all
SONET/SDH
Regenerator
Section,
Multiplexer
Section and Path Overhead including the low-order
Virtual Container (VC) Path Overhead. T1/E1 framing
is
transparent;
therefore,
the
device
neither
generates nor terminates the E1 frame.
A
single
Voyager
performs
mapping
of
28
aysnchrounous T1 spans to VT1.5/STS-1 in SONET
or VC-11/TU-11/TUG-2/VC-3/AU-3/STM-0 in SDH.
The
Voyager
can
also
alternatively
map
21
asynchronous E1 spans to VT2/STS-1 or VC-12/TU-
12/TUG-2/VC-3/AU-3/STM-0.
Mapping
to
STS-3/
STM-1 requires (3) Voyager devices with one acting
as "master" framer and two acting as "slave" framers.
In this configuration, Voyager performs all the
necessary framing, pointer processing and mapping
functions required for mapping 84 x T1 spans to
VT1.5/STS-1/STS-3 in SONET or either VC11/TU11/
TUG-2/VC-3/AU-3/STM1
or
VC-11/TU-11/TUG-2/
TUG-3/VC-4/AU-4/STM-1 in SDH. Alternatively, 63 x
E1 spans can also be map to VT2/STS-1/STS-3 in
SONET or either VC-12/TU-12/TUG-2/VC-3/AU-3/
STM-1
or
VC-12/TU-12/TUG-2/TUG-3/VC-4/AU-4/
STM-1 in SDH.
FIGURE 1. SIMPLIFIED BLOCK DIAGRAM
STS- N TOH
Processor
JTAG
Microprocessor
STS- N TOH
Processor
28 T1/
21 E1
Short
Haul
LIU
Tx
28 T1/
21 E1
Short
Haul
LIU
Rx
Cross
Connect
28x 28
Rx
Cross
Connect
28x 28
Tx
Mapper
+
Pointer
Proc
Rx
Mapper
+
Pointer
Proc
Tx
XRT86SH328 Voyager
SONET
Path
Proc
( POH)
Rx
Tx
SONET
Trans-
Port
Proc
( TOH)
Rx
SONET
Trans-
Port
Proc
( TOH)
Tx
Telecom
Bus
Rx
Telecom
Bus
Tx
PLL
2kHz/8kHz
Master
Slave
19. 44 Mhz
SONET OH
Drop
SONET OH
Add
Single Input
Clock
Reference
JTAG
Port
Microprocessor
Interface
Recovered
Line Clock
Egress
Ingress
Telecom Bus or
Serial Port
Interface
Path OH
Drop
Path OH
Add
28 T1/
21 E1
Ch
Tx
Framer
28 T1/
21 E1
Ch
Rx
Framer
28 T1/
21 E1
Ch
Rx
Framer
28 T1/
21 E1
Ch
Tx
Framer
T1/E1,
2/4/8x
VT1.5
VT2
VT1.5
VT2
VT1.5
VT2
VT1.5
VT2
M13
MUX
DS-3 Framers
SONET
Path
Proc
( POH)
21x 21
21x 21
Long Haul LBO
Diagnostics


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