MTC-20280
ISDN/IDSL Terminal Controller
Data Sheet
Preliminary Rev 2.0 November 1998
Key Features
w
Integrated ARM7TDMI RISC
processor core
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16 or 8 bit memory bus
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3, full-duplex HDLC formatters
with FIFO
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3-way GCI interface and
router
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Supports up to 8 GCI
peripherals per port
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UART with full-duplex 16 byte
FIFOs
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8-bit and 4-bit parallel I/O
ports
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100 pin PQFP Package style
Key Applications
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ISDN NT+
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ISDN / IDSL routers /
multiplexers
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ISDN PABX
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ISDN / IDSL Terminal Adaptors
General Description
The MTC-20280 is a fully integrated
controller for ISDN/IDSL terminal
equipment applications. It has been
specifically designed for control and
interface functions between an ISDN
access device, such as the MTC-
20276/77 Integrated NT, and other
terminal functions such as analog
interfaces, e.g. by means of the MTK-
40131 Short-Haul POTS chipset. It
incorporates an ARM7TDMI RISC
core, which can perform all of the
terminal control functions required in
software. It can thus form the core of
an Intelligent NT, or “NTplus” unit, as
well as being the core of router/multiplexer
equipment for IDSL applications. the
on-chip GCI router allows any B--channel
in any timeslot of any GCI port to be
routed to any other B-channel without
the need for CPU intervention. In
addition, the 3 GCI ports support all
modes including the x8 multiplex
mode, allowing up to 16 analog
channels to be accessed per port. It
can also form the core of a small
ISDN based PABX.
Ordering Information
Figure 1 : Block Diagram
Part number
Package
Temp.
MTC-20280PQ-C 100 pin PQFP
0 /+70°C
MTC-20280PQ-I 100 pin PQFP
- 40 /+85°C
For tape and reel, add T after package code (eg PQT)
AMI [ AMI SEMICONDUCTOR ]
