tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 479

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

Preliminary Data Sheet
May 2001
21 28-Channel Framer Block Functional Description
21.1 28-Channel Framer Introduction
The next two sections describe the switching and transport mode of the superframer. The framer can be configured
into two basic modes: DS0/E0 switching mode and DS1/E1 transport/monitoring mode.
21.1.1 DS0/E0 Switching Applications
The switching application of the Super Mapper/superframer is shown in
face is either a parallel interface (e.g., system telecom bus interface) or a serial system interface (e.g., CHI) that
transmits or receives framed (channelized) or unframed (unchannelized) DS0/E0 time slots.
In the transmit line direction (Tx, to the mapper), the framer receives data from the DS0/E0 switch through the sys-
tem interface and sends this data (framed or unframed) to the mapper section via the internal DS1 cross connect
block. The data consists of data, clock, and frame sync.
In the receive line direction (Rx), the mapper sends the line data and clock (through the internal DS1 cross con-
nect) to the framer block. The framer then takes this data and transmits it to a DS0/E0 switch through the system
interface. Links provisioned for extended superframe format (ESF) can automatically generate and send perfor-
mance message reports (PRMs) from the Rx path performance monitor through a Tx path HDLC channel assigned
to the facility data link in the transmit line path.
Agere Systems Inc.
SWITCH
DS0/E0
INTERFACE
SYSTEM
Figure 52. Switching Application of the Super Mapper
FRAMER
FRAMER
FRAMER
SUPER MAPPER #1
SUPER MAPPER #2
SUPER MAPPER #3
PM
PM
PM
MAPPER
MAPPER
MAPPER
TELECOM
MAPPER
STS-3
BUS
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
MAPPER
MAPPER
MAPPER
SUPER MAPPER #1
SUPER MAPPER #2
SUPER MAPPER #3
Figure 52
(continued)
PM
PM
PM
FRAMER
FRAMER
FRAMER
TMXF28155/51 Super Mapper
and
INTERFACE
Figure
SYSTEM
53. The system inter-
SWITCH
DS0/E0
5-8924(F)r.1
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