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IDT82V2081 fiches techniques PDF

IDT - SINGLE CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT

Numéro de référence IDT82V2081
Description SINGLE CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
Fabricant IDT 
Logo IDT 





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IDT82V2081 fiche technique
SINGLE CHANNEL T1/E1/J1 LONG HAUL/
SHORT HAUL LINE INTERFACE UNIT
IDT82V2081
FEATURES:
• Single channel T1/E1/J1 long haul/short haul line interfaces
• Supports HPS (Hitless Protection Switching) for 1+1 protection
without external relays
- 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
• Receiver sensitivity exceeds -36 dB@772KHz and -43 dB@1024
- High impedance setting for line drivers
KHz - PRBS (Pseudo Random Bit Sequence) generation and detection
• Programmable T1/E1/J1 switchability allowing one bill of ma-
with 215-1 PRBS polynomials for E1
terial for any line condition
- QRSS (Quasi Random Sequence Signals) generation and detection
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-shapingtemplatesforshorthaulandlonghaulLBO(LineBuild
Out)
- Line terminating impedance (T1:100 , 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
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
Cable attenuation indication
Adaptive receive sensitivity
Short circuit protection and internal protection diode for line driv-
ers
LOS (Loss Of Signal) & AIS (Alarm Indication Signal) detection
Supports serial control interface, Motorola and Intel Multiplexed
interfaces and hardware control mode
Package:
IDT82V2081: 44-pin TQFP
DESCRIPTION:
The IDT82V2081 can be configured as a single channel T1, E1 or J1 Line
Interface Unit. In receive path, an Adaptive Equalizer is integrated to
removethedistortionintroducedbythecable attenuation.TheIDT82V2081
also performs clock/data recovery, AMI/B8ZS/HDB3 line decoding and
detects and reports the LOS conditions. In transmit path, there is an AMI/
B8ZS/HDB3 encoder, Waveform Shaper and LBOs. There is one Jitter
Attenuator, which can be placed in either the receive path or the transmit
path. The Jitter Attenuator can also be disabled. The IDT82V2081 supports
both Single Rail and Dual Rail system interfaces. To facilitate the network
maintenance, a PRBS/QRSS generation/detection circuit is integrated in
the chip, and different types of loopbacks can be set according to the appli-
cations. Four different kinds of line terminating impedance, 75 , 100 Ω,
110 and 120 are selectable. The chip also provides driver short-circuit
protectionandinternalprotectiondiode. Thechipcanbecontrolledbyeither
software or hardware.
The IDT82V2081 can be used in LAN, WAN, Routers, Wireless Base
Stations, IADs, IMAs, IMAPs, Gateways, Frame Relay Access Devices,
CSU/DSU equipment, etc.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGES
2003 Integrated Device Technology, Inc. All rights reserved.
1
July 2004
DSC-6228/4

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