IDT82V2081(2019) Просмотр технического описания (PDF) - Integrated Device Technology

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IDT82V2081
(Rev.:2019)

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

Integrated Device Technology 

SINGLE CHANNEL T1/E1/J1

LONG HAUL/SHORT HAUL

LINE INTERFACE UNIT

IDT82V2081

FEAT U RES

• Single channel T1/E1/J1 long haul/short haul line interface

• Supports HPS (hitless protection Switching) for 1+1 protection

without external relays

• Receiver sensitivity exceeds -36 dB@772KHz and -43 dB@1024

KHz

• 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 for short haul and long haul LBO (Line Build

Out)

- Line terminating impedance (T1:100 , J1:110 E1:75 120 

- 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 signal source) 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 loop-

back

• Cable attenuation indication

• Adaptive receive sensitivity

• Short circuit protection and internal protection diode for line

drivers

• AIS (alarm indication signal) detection

• Supports serial control interface, Motorola and Intel multiplexed

interfaces and hardware control mode

• Pin compatible 82V2041E T1/E1/J1 short haul LIU and 82V2051E

E1 short haul LIU

• Package:

Available in 44-pin TQFP and 48-pin QFN packages

DESCRIPTION

The IDT82V2081 can be configured as a single channel T1, E1 or J1

line interface unit. In the receive path, an adaptive equalizer is integrated

to remove the distortion introduced by cable attenuation. The IDT82V2081

also performs clock/data recovery, AMI/B8ZS/HDB3 line decoding and

detects and reports LOS conditions. In the transmit path, there is an AMI/

B8ZS/HDB3 encoder, waveform shaper and LBOs. There is one jitter atten-

uator, 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 mainte-

nance, a PRBS/QRSS generation/detection circuit is integrated in the chip,

and different types of loopbacks can be set according to the applications.

Four different kinds of line terminating impedance, 75 , 100  110 and

120 are selectable. The IDT82V2081 also provides driver short-circuit

protection and internal protection diodes. The IDT82V2081 can be con-

trolled by either software or hardware.

The IDT82V2081 can be used in LAN, WAN, routers, wireless base sta-

tions, IADs, IMAs, IMAPs, gateways, frame relay access devices, CSU/

DSU equipment, etc.

IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.

1

 2019 Integrated Device Technology, Inc.

January 7, 2019

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