IDT82V2604

* Highlights
Provides API command set for convenient configuration and operation. An embedded controller and a downloaded software 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 automatically 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 4 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 4 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 line side clock detection.
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.

* 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 Specification 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 Hierarchy (PDH).
G.802 Inter-working between networks based on differentdigital hierarchies and speech encoding laws.
I.610 B-ISDN operation and maintenance principles and functions.
* ANSI
ANSI T1.646-1995, Broadband-ISDN-Physical Layer Specification for User-Network Interface Including DS1/ATM, 1995.
* MVIP

The 4-port IDT82V2604 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 of IDT82V2604, up to 4 physically independent T1/E1 streams can be terminated through the utilization of most T1/E1 framersand LIUs in the market, and up to 4 logical IMA groups (i.e., 4 data channels) can be supported at the same time. To interface with most popular ATM layer chips in the market, IDT82V2604 supports Utopia layer 2 MPHY cell level handshake 8-bit bus interface.

Through a well-defined API command set, IMA function of IDT82V2604 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 requirement.