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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
PEB1757E
TETHYS 2 STS-192/STM-64, 16 STS-48/STM-16, MUX/DEMUX
MARCH 2008
REV. 1.0.2
GENERAL DESCRIPTION
Tethys PEB1757E is optimized for SONET/SDH
applications as a full-duplex two STS-192/STM64 or
sixteen STS-48/STM-16 or a mix of sixteen STS-12/
STM-4 and STS-3/STM-1 MUX/DEMUX channel
device with full framer functionality including pointer
processing, and overhead termination; ideal for
aggregation, ADM and DWDM applications. In the
demultiplex ingress direction, Tethys PEB1757E
accepts either two STS-192/STM-64 or 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
PEB1757E locates the incoming SONET/SDH frame,
optionally de-scrambles the data, monitors the TOH
and
POH,
and
provides
STS-1
level
pointer
processing. In addition, Tethys PEB1757E supports
TOH and POH overhead transparency.
In the multiplex direction, Tethys PEB1757E
accepts sixteen STS-48/STM-16 signals in serial 2.5
Gbit/s format. Tethys PEB1757E further provides
corresponding functionality in the DEMUX direction.
APPLICATIONS
ADM
Metro Aggregation
Digital Cross Connects
Repeaters
DWDM Equipment
Test Equipment
FEATURES
Provides 2 SFI4.1 interfaces for STS-192/STM-64 links
Provides serial STS-48/STM-16, STS-12/STM-4 or STS-
3/STM-1 links
Differential CML 2.5 Gbit/s I/O interface to optics
Differential CML 2.5 Gbit/s I/O interface to system/
backplane
TFI-5 Support
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
Processes SONET/SDH sixteen STS-48/STM-16 on the
system/client 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, … to 192c
Supports auto-detection of concatenation streams STS-
3c/STM-1, STS-12c/STM-4 and STS-48c/STM-16
Supports STS-1 level pointer processing 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
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
Provides full TOH/POH add/drop
Provides STS-1 level POH add/drop
Supports more than ± 746 UI programmable output skew
on STS48/STM-16 system side output links to external
cross-connects
For
diagnostic
purposes,
Tethys
provides
PRBS
generator/checker and loop backs
Provides B1, B2, H1 and H2 bit error generation for both
receive and transmit direction diagnostics
Provides 1 second performance monitors
0.13 micron process, 1.2 V core, 3.3 V I/O
Motorola 32-bit synchronous microprocessor interface for
configuration, control, and status monitoring
Complies with GR-253, GR-1377, ITU-T G.707, and
ANSI T1.105
Provides a standard 5-signal IEEE 1149.1 JTAG test port
for boundary scan board test purposes
SPECIFICATIONS
OIF TFI-5
STANDARDS
ANSI T1.105-2000-193R2 (DRAFT)
ANSI T1.105.05-1994
T1X1.3/93-005RI -1993 - preliminary
GR-253-CORE Sept. 2000
ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING TEMPERATURE RANGE
PEB1757E
1397 CBGA
-40°C to +85°C