IDT82V2041E Datasheet, PDF (1/75 Pages) Integrated Device Technology – SINGLE CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT

SINGLE CHANNEL T1/E1/J1
SHORT HAUL LINE INTER-
FACE UNIT
IDT82V2041E
FEATURES
• Single channel T1/E1/J1 short haul line interfaces
• Supports HPS (Hitless Protection Switching) for 1+1 protection
without external relays
• Programmable T1/E1/J1 switchability allowing one bill of ma-
terial for any line condition
• Single 3.3 V power supply with 5 V tolerance on digital interfaces
• Meets or exceeds specifications in
- ANSI T1.102, T1.403 and T1.408
- ITU I.431, G.703, G.736, G.775 and G.823
- ETSI 300-166, 300-233 and TBR12/13
- AT&T Pub 62411
• Software programmable or hardware selectable on:
- Wave-shaping templates
- Line terminating impedance (T1:100 Ω, J1:110 Ω, E1:75 Ω/120 Ω)
- Adjustment of arbitrary pulse shape
- JA (Jitter Attenuator) position (receive path or transmit path)
- Single rail/dual rail system interfaces
- B8ZS/HDB3/AMI line encoding/decoding
- Active edge of transmit clock (TCLK) and receive clock (RCLK)
- Active level of transmit data (TDATA) and receive data (RDATA)
- Receiver or transmitter power down
- High impedance setting for line drivers
- PRBS (Pseudo Random Bit Sequence) generation and detection
with 2¹⁵-1 PRBS polynomials for E1
- QRSS (Quasi Random Sequence Signals) generation and detection
with 2²⁰-1 QRSS polynomials for T1/J1
- 16-bit BPV (Bipolar Pulse Violation) /Excess Zero/PRBS or QRSS
error counter
- Analog loopback, Digital loopback, Remote loopback and Inband
loopback
• Adaptive receive sensitivity up to -20 dB (Host Mode only)
• Short circuit protection and internal protection diode for line
drivers
• LOS (Loss Of Signal) detection with programmable LOS levels
(Host Mode only)
• AIS (Alarm Indication Signal) detection
• Supports serial control interface, Motorola and Intel Multiplexed
interfaces and hardware control mode
• Pin compatibe to 82V2081 T1/E1/J1 Long Haul/Short Haul LIU
and 82V2051E E1 Short Haul LIU
• Package:
Available in 44-pin TQFP packages
Green package options available
DESCRIPTION
The IDT82V2041E can be configured as a single channel T1, E1 or J1
Line Interface Unit. The IDT82V2041E performs clock/data recovery, AMI/
B8ZS/HDB3 line decoding and detects and reports the LOS conditions. An
integrated Adaptive Equalizer is available to increase the receive sensitivity
and enable programming of LOS levels. In transmit path, there is an AMI/
B8ZS/HDB3 encoder and Waveform Shaper. There is one Jitter Attenua-
tor, which can be placed in either the receive path or the transmit path. The
Jitter Attenuator can also be disabled. The IDT82V2041E supports both
Single Rail and Dual Rail system interfaces. To facilitate the network main-
tenance, a PRBS/QRSS generation/detection circuit is integrated in the
chip, and different types of loopbacks can be set according to the applica-
tions. Four different kinds of line terminating impedance, 75 Ω, 100 Ω, 110
Ω and 120 Ω are selectable. The chip also provides driver short-circuit pro-
tection and internal protection diode. The chip can be controlled by either
software or hardware.
The IDT82V2041E can be used in LAN, WAN, Routers, Wireless Base
Stations, IADs, IMAs, IMAPs, Gateways, Frame Relay Access Devices,
CSU/DSU equipment, etc.
IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
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 2005 Integrated Device Technology, Inc.
December 9, 2005
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