P
RELIMINARY
P
RODUCT
F
LYER
Semiconductor Solutions for
High Speed Communications
and Fiber Optic Applications
Tethys鈩?448 is optimized for SONET/SDH applications
as a full-duplex sixteen STS-48/STM-16 or a mix of six-
teen STS-12/STM-4 and STS-3/STM-1 MUX/DEMUX with
full framer functionality including pointer processing,
and overhead termination; ideal for aggregation, ADM
and DWDM applications. In the demultiplex ingress
direction, Tethys鈩?448 accepts either sixteen STS-48/
STM-16, or a mix of sixteen STS-12/STM-4 and STS-3/
STM-1 signals in serial 2.5 Gbit/s or serial 622 Mbit/s or
serial 155 Mbit/s format. Tethys鈩?448 locates the incom-
ing SONET/SDH frame, optionally de scrambles the
data, monitors the TOH and POH, and provides STS-1
level pointer processing. In addition, Tethys鈩?448 sup-
ports TOH and POH overhead transparency.
In the multiplex direction, Tethys鈩?448 accepts sixteen
STS-48/STM-16 signals in serial 2.5 Gbit/s format.
Tethys鈩?448 further provides corresponding functional-
ity in the DEMUX direction.
Applications
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ADM
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Metro Aggregation
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Digital Cross connects
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Repeaters
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DWDM Equipment
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Test Equipment
Tethys鈩?448
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Features
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Provides serial STS-48/STM-16,
STS-12/STM-4 or STS-3/STM-1
links
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Differential CML 2.5 Gbit/s I/O
interface to optics
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Differential CML 2.5 Gbit/s I/O
interface to system/backplane
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TFI-5 Support
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Processes SONET/SDH sixteen
STS-48/STM-16 or a mix of sixteen
STM-12/STM-4 and STS-3/STM-1
on the line side interface
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Processes SONET/SDH sixteen
STS-48/STM-16 on the system/cli-
ent side serial 2.5 Gbit/s interface
Provides line timing of all line and
system side interfaces
Processes SONET/SDH flexible
concatenation streams of STS-2c,
3c, 4c, 鈥?to 48c
Supports auto-detection of concat-
enation streams STS-3c/STM-1,
STS-12c/STM-4 and
STS-48c/STM-16
Supports STS-1 level pointer pro-
cessing of STS-48/STM-16 or
STM-12/STM-4 or STS-3/STM-1
streams
Provides interfaces for dropping
alarm and status information, and
for forcing alarm conditions
Power dissipation of 15 W,
depending on mode of operation
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Terminates and generates SONET
section, line, and path layers
Provides TOH and POH
transparency
Provides monitoring of POH bytes
B3 and N1/Z5
Provides B2 SF/SD capability for
Poisson and bursty error
distribution
Pro Provides full TOH/POH
add/drop
Provides STS-1 level POH
add/drop
Supports more than
鹵
746 UI
programmable output skew on
STS48/STM-16 output links to
external cross-connects
For diagnostic purposes, Tethys
provides PRBS generator/checker
and loop backs
Te t h y s 鈩?4 4 8
PEB1756E
Sixteen STS-48/STM-16 MUX/DEMUX
N e v e r
s t o p
t h i n k i n g .
PEB1756E相關(guān)型號(hào)PDF文件下載
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Mapper/Framer for STM-4/STS-12 and STM-1/STS-3
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Mapper/Framer for STM-4/STS-12 and STM-1/STS-3
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Semiconductor Solutions for High Speed Communication and Fib...
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Semiconductor Solutions for High Speed Communication and Fib...
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Semiconductor Solutions for High Speed Communication and Fib...
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Semiconductor Solutions for High Speed Communication and Fib...
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