PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 257

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

7.3
7.3.1
Note 75: Access to EOC is described in detail in "Access to EOC of U-Interface", page
This application hint describes a way of addressing a certain repeater if one or more
repeater are used in one transmission line.
The LT-RP and NT-RP should be operated in EOC Transparent mode (see "EOC
Auto/Transparent Mode", page 55). In order to address each repeater individually, the
EOC-addresses (001
to be addressed.
The repeater address is 001
this address, the EOC-command will be executed according to the national repeater
specification. In case an EOC-message with the NT (000
is received by the repeater, the message needs to be passed on without modifications.
If any other address is received (i.e. (010
ASIC) decrements the address before passing the EOC-message downstream. Figure
96 illustrates this procedure with a repeater and a NT EOC-address.
Figure 96
Semiconductor Group
Processing
EOC
NT
110.
Adr
Hints for Repeater Applications
EOC Addressing Management
U
=
EOC-Handling in Repeater Applications
0
RP
LT
Repeater # 3
Processing
B
EOC
) to (110
P
NT
RP
B
Adr =1
Adr
. If a repeater control unit detects an EOC-message with
B
U
) are used. This allows a maximum of 6 repeater stations
=
0
RP
LT
Repeater
P
B
257
#
) to (110
NT
RP
2
Adr
Adr = 0
U
=
2
B
)) the repeater control unit (µP or
RP
LT
Repeater
B
) or broadcast (111
P
#
NT
RP
1
Adr
Adr = 0
U
=
Application Hints
3
Data Sheet 01.99
LT
EOC Adr = 3
EOC
PEB 2091
PEF 2091
B
Adr
ITD04216
) address
=
0