XRT83SL216 Datasheet, PDF (1/41 Pages) Exar Corporation – 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT

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PRELIMINARY
XRT83SL216
16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
DECEMBER 2005
GENERAL DESCRIPTION
APPLICATIONS
REV. P1.0.3
The XRT83SL216 is a fully integrated 16-channel E1
short-haul LIU which optimizes system cost and
performance by offering key design features. The
XRT83SL216 operates from a single 3.3V power
supply. The LIU features are programmed through a
standard serial microprocessor interface. EXAR’s LIU
has patented high impedance circuits that allow the
transmitter outputs and receiver inputs to be placed in
a high impedance mode when experiencing a power
failure or when the LIU is powered off. Additional
features include TAOS for transmit and receive,
RLOS, LCV, on chip Jitter Attenuator, AIS detector,
and diagnostic loopback modes.
• ISDN Primary Rate Interface
• CSU/DSU E1 Interface
• E1 LAN/WAN Routers
• Public Switching Systems and PBX Interfaces
• E1 Multiplexer and Channel Banks
• Integrated Multi-Service Access Platforms (IMAPs)
• Integrated Access Devices (IADs)
• Inverse Multiplexing for ATM (IMA) Wireless Base
Stations
FIGURE 1. BLOCK DIAGRAM OF THE XRT83SL216
TCLK
TPOS
TNEG
RCLK
RPOS
RNEG/LCV
1 of 16 Channels
HDB3
Encoder
Timing
Control
Remote
Loopback
Jitter
Attenuator
(Rx or Tx)
Digital
Loopback
HDB3
Decoder
Clock & Data
Recovery
Tx Pulse
Shaper
Peak
Detector
& Slicer
Line
Driver
Analog
Loopback
Rx
Equalizer
TTIP
TRING
RTIP
RRING
RLOS
TDI
TMS
TCK
JTAG
AIS & LOS
Detector
Serial Microprocessor
Interface
Internal Clock Generator
JASEL0
JASEL1
TxOE
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • FAX [phone] • www.exar.com