MTC-20280
ISDN/IDSL Terminal Controller
Application Information
Typical Application
The MTC-20280 offers a flexible
processor architecture for use in a
wide range of telecommunications
applications where the GCI standard
interconnection bus is used.
Particularly, it offers functions and
features specifically relevant to ISDN
terminal adapter and advanced NT
applications such as “NTplus” or “NTN”.
In such applications, the block schematic
shown below is commonly used. Here,
the MTC-20280 is used to control and
monitor the MTC-20276 (or MTC-
20277) Integrated NT device (operating
in its external access mode) and the
MTK-40131 chipset for short-range
analog telephone (“POTS”) interface.
Other applications such as small PABX
systems or remote access
concentrators can also be addressed.
UART
Figure 4 : Typical Application Block Diagram
*
*
*
e.g.MTK-40131
*PULL-UP NEEDED
on both DO and DI
Figure 5 : Application Schematic and External Components
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AMI [ AMI SEMICONDUCTOR ]
