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MT90220 Datasheet, PDF (1/116 Pages) Mitel Networks Corporation – Octal IMA/UNI PHY Device | |||
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MT90220
Octal IMA/UNI PHY Device
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
DS5036
ISSUE 4
December 1999
Ordering Information
MT90220AL 208 Pin MQFP
-40°C to +85°C
⢠Provides Header Error Control (HEC)
veriï¬cation and generation, error detection,
Filler cell ï¬ltering (IMA mode) and Idle/
Unassigned cell ï¬ltering (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
RX External Static RAM
Utopia
Level 2
BUS
Utopia
I/F CTRL
Utopia FiFo
Processor I/F
4 Internal
IMA
Processors
8....
1
Cell
Delineator
8 x CD Circuit
Transmission 8....
Convergence 1
8 x TC Circuit
T1/E1
Framers
2.048 or
1.544 Mb/s
P/S
T1/E1
Framers
P/S
T1/E1
Framers
8 Serial PCM Ports
Figure 1 - MT90220 Block Diagram with Built-in IMA functions for 4 IMA Groups over up to 8 links
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