MT89L86AN Просмотр технического описания (PDF) - Mitel Networks
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MT89L86AN Datasheet PDF : 40 Pages
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MT89L86
Advance Information
Applications
Switch Matrix Architectures
The MT89L86 is an ideal device for designs of
medium size switch matrix. For applications where
voice and grouped data channels are transported
within the same frame, the voice samples have to be
time interchanged with a minimum delay while
maintaining the integrity of grouped data. To
guarantee the integrity of grouped data during
switching and to provide a minimum delay for voice
connections, the MT89L86 provides the per-channel
selection between variable and constant throughput
delay. This can be selected by the V/C bit of the
Connection Memory High locations.
Different configurations at different data rates can be
built to accommodate Non-Blocking matrices of up to
512 channels while maintaining the per channel
selection of the device's throughput delay. Some
examples of such Non-Blocking configurations are
given in Figures 9 to 11.
For applications where voice and data samples are
encoded into individual 64 kb/s time-slots on an
8kHz frame basis, the switch matrix can operate with
time interchange procedures where only variable
8 Streams
@ 2.048 Mb/s
IN
8 Streams
@ 2.048 Mb/s
MT89L86
#1
MT89L86
#2
8 Streams
@ 2.048 Mb/s
8 Streams
@ 2.048 Mb/s
OUT
MT89L86
#3
MT89L86
#4
Figure 9 - 512-Channel Switch with Serial Streams at 2.048 Mb/s
IN
8 Streams
@ 2.048 Mb/s
MT89L86
STi0
STo0
•
STo1
•
STo2
•
STo3
•
•
•
STi7
4 Streams
@ 4.096 Mb/s
MT89L86
STi0
STo0
STi1
•
STi2
•
STi3
•
•
•
•
STo7
8 Streams
@ 2.048 Mb/s
OUT
Figure 10 - 256-Channel Switch with Rate Conversion between 2.048 and 4.096 Mb/s
IN
8 Streams
@ 2.048 Mb/s
MT89L86
STi0
STo0
•
STo1
•
2 Streams
@ 8.192 Mb/s
•
•
•
•
STi7
MT89L86
STi0
STo0
STi1
•
•
•
•
•
•
STo7
8 Streams
@ 2.048 Mb/s
OUT
Figure 11 - 256-Channel Switch with Rate Conversion between 2.048 and 8.192 Mb/s
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