FEATURES

• Supports AT&T TR62411 and Telcordia GR-1244-CORE Stratum

3, Stratum 4 Enhanced and Stratum 4 clock, OC-3 port and

155.52 Mbit/s application

• Supports ITU-T G.813 Option 1 clocks

• Supports ITU-T G.812 Type IV clocks

• Supports ETSI ETS 300 011, TBR 4, TBR 12 and TBR 13 timing

for E1 interface

• Selectable reference inputs: 8 kHz, 1.544 MHz, 2.048 MHz or

19.44 MHz

• Accepts two independent reference inputs which may have

same or different nominal frequencies applied to them

• Provides C1.5o, C3o, C2o, C4o, C6o, C8o, C16o, C19o, C32o and

C155 output clock signals

• Provides 7 types of 8 kHz framing pulses: F0o, F8o, F16o,

F19o,F32o, RSP and TSP

• Provides a C2/C1.5 output clock signal with the frequency

controlled by the selected reference input Fref0 or Fref1

• Holdover frequency accuracy of 0.025 ppm

• Phase slope of 5 ns per 125 µs

• Attenuates wander from 2.1 Hz

• Fast lock mode

• Provides Time Interval Error (TIE) correction

• MTIE of 600 ns

• JTAG boundary scan

• Holdover status indication

• Freerun status indication

• Normal status indication

• Lock status indication

• Input reference quality indication

• 3.3 V operation with 5 V tolerant I/O

• Package available: 56-pin SSOP (Green option available)

DESCRIPTION

The 82V3155 is an enhanced T1/E1/OC3 WAN PLL with dual

reference inputs. It contains a Digital Phase-Locked Loop (DPLL), which

generates low jitter ST-BUS, 19.44 MHz and 155.52 MHz clock and

framing signals that are phase locked to an 8 kHz, 1.544 MHz, 2.048

MHz or 19.44 MHz input reference.

The 82V3155 provides 10 types of clock signals (C1.5o, C3o,

C6o, C2o, C4o, C8o, C16o, C19o, C32o, C155) and 7 types of framing

signals (F0o, F8o, F16o, F19o, F32o, RSP, TSP) for multitrunk T1/E1

and STS3/OC3 links.

The IDT82V3155 is compliant with AT&T TR62411, Telcordia GR1244-CORE Stratum 3, Stratum 4 Enhanced, Stratum 4, OC-3 port,

155.52 Mbit/s application and ETSI ETS 300 011, ITU-T G.813 Option 1,

and ITU-T G.812 Type IV clocks. It meets the jitter/wander tolerance,

jitter/wander transfer, intrinsic jitter/wander, frequency accuracy, capture

range, phase change slope, holdover frequency accuracy and MTIE

(Maximum Time Interval Error) requirements for these specifications.

The 82V3155 can be used in synchronization and timing control for

T1, E1 and OC3 systems, or used as ST-BUS clock and frame pulse

source. It also can be used in access switch, access routers, ATM edge

switches, wireless base station controllers, or IADs (Integrated Access

Devices), PBXs, line cards and SONET/SDH equipments.