IDT82V2608 Datasheet, PDF (9/98 Pages) Integrated Device Technology – INVERSE MULTIPLEXING FOR ATM

Inverse Multiplexing for ATM
IDT82V2608
FEATURES
! _Highlights
– Provides API command set for convenient configuration and
operation. An embedded controller and a downloaded soft-
ware are used to interpret the commands. Functions can be
added by software upgrading.
– Supports IMA group auto detect.
– Supports link backup so that a backup link can be automati-
cally added when a previously configured link fails.
– All the state machines are implemented in hardware.
– Advanced cell buffer management algorithm to support ATM
QoS requirements.
! _{Other Features}
– Accommodates up to 4 IMA logical groups.
– Supports 8 T1/E1 channelized or unchannelized links.
– Supports T1 ISDN links.
– Supports MIXED mode: links not assigned to an IMA group
can be used in UNI mode.
– Supports symmetrical and asymmetrical operation.
– Supports Common Transmit Clock (CTC) and Independent
Transmit Clock (ITC) timing modes.
– Provides 8 Utopia Level 2 8 bit cell level handshake MPHY
interface to ATM device.
– Supports maximum link delay tolerance of up to 212 ms for E1
or 281 ms for T1 (when 512 KB external memory is used).
– Provides parameters for MIB (Management Information
Base).
– Supports dynamic addition/deletion of links to/from a working
IMA group.
– Supports non-multiplexed Intel or Motorola microprocessor
interface.
– Loopback capability at both TDM and Utopia ports.
– Supports MVIP.
– JTAG boundary scan meets IEEE 1149.1.
– Package: 208 pin PBGA.
– 3.3V operation / 5V tolerant input.
APPLICATIONS
– DSLAM concentrator
– 3G Wireless base station controller (NodeB) and Radio
Network Controller (RNC)
– Integrated Access Devices (IAD)
STANDARDS COMPLIANT
! _ATM-Forum
– Utopia Level 2 Version 1.0, af-phy-0039.000, June 1995.
– Inverse Multiplexing for ATM Specification version 1.1, af-phy-
0086.001, March 1999.
– Backward compatible with Inverse Multiplexing for ATM Spec-
ification version 1.0, af-phy-0086.000, September 1994.
– DS1 Physical Layer Specification, af-phy-0016.000,
September 1994.
– E1 Physical Interface Specification, af-phy-0064.000,
September 1996.
! _ITU-T
– I.432 B-ISDN User Network Interface PHY specification.
– G.804 ATM Cell Mapping into Plesiochronous Digital Hier-
archy (PDH).
– G.802 Inter-working between networks based on different
digital hierarchies and speech encoding laws.
– I.610 B-ISDN operation and maintenance principles and func-
tions.
! _ANSI
– ANSI T1.646-1995, Broadband-ISDN-Physical Layer Specifi-
cation for User-Network Interface Including DS1/ATM, 1995.
! _MVIP
DESCRIPTION
The 8-port IDT82V2608 is a feature-rich device that provides the
solution to implement IMA and UNI logical channels over T1 or E1 links
in all public or private UNI, NNI and B-ICI applications. The chip is
compliant with the ATM Forum IMA specification v1.1 and backward
compatible with IMA specification v1.0.
In the chip architecture, up to 8 physically independent T1/E1
streams can be terminated through the utilization of most T1/E1 framers
and LIUs in the market, and up to 4 logical IMA groups (i.e., 4 data chan-
nels) can be supported at the same time. To interface with most popular
ATM layer chips in the market, IDT82V2608 supports Utopia Level 2
MPHY cell level handshake 8-bit bus interface.
Through a well-defined API command set, IMA function can be easily
designed into various IMA systems and there is little necessity to access
a large amount of registers. A downloaded software is used to interpret
the command set and can be easily upgraded to meet specific require-
ment.
The IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
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 2006 Integrated Device Technology, Inc.
December 4, 2006
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