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MT90220 数据表(PDF) 1 Page - Mitel Networks Corporation |
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MT90220 数据表(HTML) 1 Page - Mitel Networks Corporation |
1 / 116 page 1 Features • Cost effective, single chip, 8-port ATM IMA and UNI processor • Up to 4 IMA groups over 8 T1/E1 links can be implemented • Supports MIXED mode; links not assigned to an IMA group can be used in UNI mode • Versatile PCM Interface to most popular T1 or E1 framers, reducing development time • Supports Symmetrical and Asymmetrical Operation • Supports both Common Transmit Clock (CTC) and Independent Transmit Clock (ITC) clocking modes • Supports T1 ISDN lines • Provides UTOPIA Level 2 MPHY Interface (MT90220 device slaved to ATM device) • Complies with ITU G.804 recommendations for performing cell mapping into T1 and E1 transmission systems • Provides ATM framing using cell delineation according to the ITU I.432 cell delineation process • Provides Header Error Control (HEC) verification and generation, error detection, Filler cell filtering (IMA mode) and Idle/ Unassigned cell filtering (UNI mode) • Provides statistics to support MIB • Connects to popular asychronous SRAM • Provides statistics on the number of HEC errors • 8 bit Microprocessor Interface, compatible with Intel and Motorola • 3.3V operation / 5V tolerant inputs • MQFP-208 pin • JTAG Test support Ordering Information MT90220AL 208 Pin MQFP -40 °C to +85°C DS5036 ISSUE 4 December 1999 MT90220 Octal IMA/UNI PHY Device Figure 1 - MT90220 Block Diagram with Built-in IMA functions for 4 IMA Groups over up to 8 links RX External Static RAM Utopia Level 2 BUS Utopia I/F CTRL Processor I/F 4 Internal IMA Processors Cell Delineator 8 x CD Circuit Transmission Convergence 8 x TC Circuit P/S P/S T1/E1 Framers 2.048 or 1.544 Mb/s 8 Serial PCM Ports T1/E1 Framers T1/E1 Framers Utopia FiFo 8 . . . . 1 8 . . . . 1 |
类似零件编号 - MT90220 |
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类似说明 - MT90220 |
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