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MT90220AL Datasheet

  • MT90220AL

  • Octal IMA/UNI PHY Device

  • 305.22KB

  • 116頁(yè)

  • MITEL

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MT90220
Octal IMA/UNI PHY Device
Features
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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擄C to +85擄C
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Provides Header Error Control (HEC)
veri鏗乧ation and generation, error detection,
Filler cell 鏗乴tering (IMA mode) and Idle/
Unassigned cell 鏗乴tering (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
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RX External Static RAM
4 Internal
IMA
Processors
T1/E1
Framers
2.048 or
1.544 Mb/s
Utopia
I/F CTRL
Utopia
Level 2
BUS
8
.
.
.
.
P/S
Cell
Delineator
8 x CD Circuit
8
P/S
T1/E1
Framers
1
Utopia FiFo
.
.
.
Transmission
.
8 x TC Circuit
Convergence 1
T1/E1
Framers
8 Serial PCM Ports
Processor I/F
Figure 1 - MT90220 Block Diagram with Built-in IMA functions for 4 IMA Groups over up to 8 links
1

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