Rainbow Electronics DS3131 - Manual (Page 170)

DS3131
170 of 174
15. APPLICATIONS
This section describes some possible applications for the DS3131. There are many potential
configurations but only a few are shown. Users are encouraged to contact the factory for support of their
particular application. Email [email protected] or visit our website at
www.maxim-ic.com/telecom for more information.
15.1 T1/E1 and T3/E3 Applications
Figure 15-1 shows an application where 28 T1 lines are being terminated into the DS3131. In this
application, the 28 T1 lines have been demultiplexed down from a T3 link, and the DS21FF42 and
DS21FT42 framers are used to locate the frame boundaries of the incoming T1 links. The local bus (if
enabled) can be used to configure and monitor the T1 framers.
Figure 15-1. 28 T1 Lines Demuxed from a T3 Line
DS3131
BOSS
DS21FF42
Four x Four
16 Channel
T1 Framer
DS21FT42
Four x Three
12 Channel
T1 Framer
M13
Interface
1
2
16
Port 0
Port 1
Port 2
Port 3
17
18
28
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Port 16
Port 17
Port 18
Port 19
Port 20
Port 21
Port 22
Port 23
Port 24
Port 25
Port 26
Port 27
PCI
Bus
Local Bus