tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 456

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
20 M13/M23 MUX/DeMUX Block Functional Description
20.1 M13 Introduction
The M13 block is a highly configurable multiplexer/demultiplexer. It can operate as an M13 in either the C-bit parity
or M23 mode, a mixed M13/M23, or an M23.
In the C-bit parity mode, the M13 provides a far-end alarm and control (FEAC) code generator and receiver, an
HDLC transmitter and receiver, and automatic far-end block error (FEBE) generation and detection.
Each internal M12 MUX/deMUX and the M23 MUX/deMUX may be configured to operate as independent MUX/
deMUX.
The M13 supports numerous automatic monitoring functions. It can provide an interrupt to the control system, or it
can be operated in a polled mode.
20.2 Features
20.2.1 M13 Applications
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Configurable multiplexer/demultiplexer for up to 28 DS1 signals, 21 E1 signals, or 7 DS2 signals to/from a DS3
signal.
M23 or C-bit parity mode operation.
Seven configurable independent M12 multiplexer/demultiplexers for up to 28 DS1 signals or 21 E1 signals
to/from 7 DS2 signals.
Provisionable time slot selection for DS1, E1, and DS2 insertion or drop.
DS3 multiplexer capable of generating alarm indication signal (AIS), remote alarm indicator (RAI), idle, far-end
alarm and control (FEAC), and far-end block error (FEBE) signals.
Automatic DS3 receive monitor that detects loss of signal (LOS), bipolar violation (BPV), excessive zeros (EXZ),
out of frame (OOF), severely errored frame (SEF), AIS, RAI, FEAC codes, P-bit parity errors, C-bit parity errors,
and FEBE indications.
HDLC transmitter with 128-byte data buffer and HDLC receiver with 128-byte data FIFO for the C-bit parity path
maintenance data link.
DS3, DS2, DS1, and E1 loopback and loopback request generation.
Complies with T1.102, T1.107, T1.231, T1.403, T1.404, GR-499, G.747, and G.775.
M13 and M23 multiplexers.
M13 multiplexers supporting G.747 format.
Independent M12 multiplexers.
Digital access cross connects (DACS).
DS1/E1/DS2 broadcast.
(continued)
Agere Systems Inc.
May 2001