XRT94L43_06 Datasheet, PDF (1/328 Pages) Exar Corporation – SONET/SDH OC-12 TO 12XDS3/E3 MAPPER

XRT94L43
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
NOVEMBER 2006
REV. 1.0.2
GENERAL DESCRIPTION
The XRT94L43 is an SDH to PDH physical layer
processor with integrated SONET OC-12 and 12
DS3/E3 framing controller. The XRT94L43 contains
an integral SONET framer which provides framing
and error accumulation in accordance with ANSI/ITU-
T specifications. For a multiple channel DS3/E3
feature, each channel contains identical elements.
The configuration of this device is through internal
registers accessible via an 8-bit parallel, memory
mapped, microprocessor interface.
The SONET/SDH transmit and receive blocks are
used to transmit/receive an STS-12/STM-4 signals or
compose and decompose 12, STS-1/DS3/E3 signals.
The blocks operate at a peak internal clock speed of
77 MHz and support 8-bit internal data paths. The
transmit and receive blocks are compliant with both
SONET and SDH standards.
The XRT94L43 performs all SONET transport and
path overhead processing for use in broadband data
transport applications.
FEATURES
• Single Chip solution for 12 DS3/E3 to SONET/SDH
Mapping
• Generates and terminates SONET section, line and
path layers.
• Provides SONET frame scrambling and
descrambling.
• Differential Line Interfaces
• 8-bit microprocessor interface
• Requires +2.5 and +3.3V power supplies with +5V
input tolerance
• -40°C to +85°C Operating Temperature Range
• Available in a 516 Ball PBGA package
APPLICATIONS
• Network switches
• Concentrators
• Frame Relay Switches
• SONET Customer Premises Multiplexers
• Network Access Equipment
• Test/Monitoring Equipment
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • FAX [phone] • www.exar.com