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The flexibility you couldn't find elsewhere

The MT90222, MT90223, and MT90224 are multi-rate inverse multiplexing for ATM (IMA) and transmission convergence (TC) devices that process ATM traffic for transmission over T1/E1, fractional T1/E1, and DSL lines. With this series of ICs, we provide complete hardware and software IMA solutions. The ICs integrate features that optimize flexibility and ease implementation of broadband access equipment.

The MT90222 is a four-port IMA/TC PHY that enables transmission of ATM cells over a group of 4 independent T1/E1 or DSL links, and accommodates up to 4 IMA logical groups. Individual links also support transmission rates of up to 10 Mb/s.

The MT90223 is an eight-port IMA/TC PHY that enables transmission of ATM cells over a group of 8 independent T1/E1 or DSL links, and accommodates up to 8 IMA logical groups. Each port supports data rates up to 5 Mb/s."

The MT90224 is a 16-port IMA/TC PHY that enables transmission of ATM cells over a group of 16 independent T1/E1 or DSL links, and accommodates up to 8 IMA logical groups. Data rates of up to 2.5 Mb/s are also supported through a serial bus interface.

Flexible Solution

Dependable Implementation

Advanced Features

Applications

IMA has been used very successfully to bridge the bandwidth gap between T1/E1 and DS3/E3 in ATM broadband access applications. With the rapidly expanding popularity of this function comes the market demand for a variety of configurations: 4 ports, 8 ports, 16 ports, 24 ports and 32 ports. The MT90222/3/4 series of IMAs address this requirement in a seamless and cost-effective fashion. DSL deployment provides an inexpensive means for broadband users to be connected to the ATM network.

Again, our multi-rate IMAs offer a simple solution to doubling or quadrupling this bandwidth without costly installation expenses on the part of service providers.

Design Scalable from 4 to 32 Ports
Number of Ports4816 24 32
IMA Chip Position 1 4-Port IMA MT90222 8-Port IMA MT90223 16-Port IMA MT90224 16-Port IMA MT90224 16-Port IMA MT90224
IMA Chip Position 2 Not Populated Not Populated Not Populated 8-Port IMA MT90223 16-Port IMA MT90224

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