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MT90223AG Datasheet(PDF) 2 Page - Zarlink Semiconductor Inc |
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MT90223AG Datasheet(HTML) 2 Page - Zarlink Semiconductor Inc |
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2 / 55 page  MT90222/3/4 Data Sheet 2 Zarlink Semiconductor Inc. General • Supports unframed serial streams up to 10 Mb/s per T1/E1 or DSL link • Single chip ATM IMA & TC processor • Versatile TDM interface for most popular T1 or E1 framers and DSL chipsets • Up to 6 MT90222/3/4 devices can be spanned using a TDM ring supporting 32 links • Provides 8 & 16-bit UTOPIA Level 1 & 2 compatible MPHY Interface (MT90222/3/4 slaved to ATM device) • 16-bit microprocessor interface for Intel or Motorola • JTAG test support • 2.5 V core, 3.3 V I/O with 5 V tolerant inputs • 384 pin PGBA with 1.0 mm pitch balls • MT90222, MT90223 & MT90224 share the same product package and pin-out configuration Applications Provides cost effective solutions to implement IMA and/or TC functions over T1, E1, J1 or DSL transport facilities in broadband access networks. Typical applications are for trunking or subscriber access in: • Integrated multi-service access platforms • Access multiplexers • Next-generation DLC • Wireless local loop • 3G wireless base-stations Preamble The MT90222, MT90223 and MT90224 form a family of similar devices, differing mainly in the maximum number of serial links, and are collectively referred to as MT90222/3/4. It should be noted throughout this document whenever reference is made to the number of serial links that the MT90224 offers a maximum of 16 serial links (links 15:0), while the MT90223 offers a maximum of 8 serial links (links 14,12,10,8,6,4,2 and 0), and the MT90222 offers a maximum of 4 serial links (links 12, 8, 4 and 0). Pin and register compatibility has been maintained to offer interchangeability. Note: When creating IMA groups for MT90222 the groups 0, 1, 2 and 3 should be used. Description The MT90222/3/4 device is targeted to systems implementing the ATM FORUM Inverse Multiplexing for ATM (IMA version 1.1 and 1.0) or UNI specifications for T1/E1 rates. In the MT90222/3/4 architecture, up to 16 physical and independent serial links can be terminated through the utilization of off-the-shelf, traditional T1/E1/J1 framers/LIUs and DSL chip sets. The MT90222/3/4 device can also provide up to 10 Mb/s per link data rates for unframed serial TDM transmissions for xDSL applications. The MT90222/3/4 device provides ATM system designers with a flexible architecture when implementing ATM access over existing trunk interfaces, allowing a migration towards ATM service technology. In addition to the design of ATM UNI specifications for T1/E1 rates, the MT90222/3/4 device is compliant with the ATM FORUM IMA specifications for controlling IMA groups of up to 16 trunks in a single chip. The MT90222/3/4 can be configured to operate in different modes to facilitate the implementation of the IMA function at both CPE and Central Office sites. For systems targeting ATM over T1/E1 with IMA and TC operating simultaneously, the MT90222/3/4 device provides the ideal architecture and capabilities. |
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