XRT72L13 Datasheet, PDF (66/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

XRT72L13 MULTIPLEXER/FRAMER IC
REV. 1.0.6
1.0 SYSTEM DESCRIPTION
The XRT72L13 M13 Multiplexer/Framer IC can be
configured to operate in any of the following modes:
• Multiplexer/De-Multiplexer Mode.
• Clear Channel DS3 Framer Mode.
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PRELIMINARY
• High Speed HDLC Controller Mode.
Each of these modes are briefly described below
Figure 25 presents a simple block diagram of the
XRT72L13 M13 Multiplexer/Framer IC.
FIGURE 25. BLOCK DIAGRAM OF THE XRT72L13 M13 MULTIPLEXER/FRAMER IC
TxPOS
TxNEG
TxLineClk
RxPOS
RxNEG
RxLineClk
CCleleaarrCChhaannnneel _l
DDSS33FFrraammeerr
32/64 Bit
De-Jitter
FIFO
MMicicrroopprroocceessssoorr
IInnteterrfafaccee
TTxxHHDDLLCCCCoonntrtroolllelerr
M23
MUX
M12
MUX
DS2 or G.747
Data Streams
M23
DEMUX
M12
DEMUX
RRxxHHDDLLCCCCoonntrtroolllelerr
TxHDLC[0:7]
TxHDLCClk
Send_FCS
TxDS1[0: 27]
TxClk[0:27]
RxDS1[0: 27]
RxClk[0:27]
RxHDLC[0:7]
RxHDLCClk
RxIdle
Valid_FCS
1.1 XRT72L13 OPERATION WHILE IN THE MUL-
TIPLEXER/DE-MULTIPLEXER MODE
Figure 26, presents a function block diagram of the
XRT72L13 when it has been configured to operate in
the "Multiplexer/De-Multiplexer Mode.
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