Datasheet

DS3112
121 of 133
14.1
Figure 14-1
14 APPLICATIONS AND STANDARDS OVERVIEW
Application Examples
and Figure 14-2 detail two possible applications of the DS3112. Figure 14-1 shows an
example of a channelized T3/E3 application. It shows the DS3112 being used to multiplex and
demultiplex a T3/E3 data stream into either 28 T1 data streams or 16 E1 data streams. The demultiplexed
T1/E1 data streams are fed into the DS21FF42/44 16-channel T1/E1 framer and the DS21FT42 12-
channel T1 framer devices. The T1/E1 framers locate the frame boundaries and concatenate four T1/E1
data streams into one 8.192MHz data stream, which is feed into the DS3134 HDLC controller.
Figure 14-2 shows an example of a dual unchannelized T3/E3 application. In this application, the
multiplexing capability of the DS3112 is disabled and it is only used as a T3/E3 framer.
Figure 14-1. Channelized T3/E3 Application
DS3134
CHATEAU
256
Channel
HDLC
Controller
DS21FF42/
DS21FF44
16
Channel
T1/E1
Framer
DS21FT42
12
Channel
T1
Framer
DS3112
TEMPE
T3/E3
Framer &
M13/
E13/
G747
Mux
DS3150
T3/E3
Line
Interface
T3/E3
Line
PCI
Bus
OC-3/
OC-12/
OC-48
Mux
Optical
I/F
bipolar
I/F
NRZ
I/F
- or -
T1/E1
datastreams
8.192MHz
I/F
8.192MHz
I/F