PEB 2091
PEF 2091
Application Hints
7.3
Hints for Repeater Applications
EOC Addressing Management
7.3.1
Note 75: Access to EOC is described in detail in "Access to EOC of U-Interface", page
110.
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 (001B) to (110B) are used. This allows a maximum of 6 repeater stations
to be addressed.
The repeater address is 001B. If a repeater control unit detects an EOC-message with
this address, the EOC-command will be executed according to the national repeater
specification. In case an EOC-message with the NT (000B) or broadcast (111B) address
is received by the repeater, the message needs to be passed on without modifications.
If any other address is received (i.e. (010B) to (110B)) the repeater control unit (µP or
ASIC) decrements the address before passing the EOC-message downstream. Figure
96 illustrates this procedure with a repeater and a NT EOC-address.
Repeater # 3
Repeater # 2
Repeater # 1
U
U
U
U
LT
RP
NT
RP
LT
RP
NT
RP
LT
RP
NT
RP
NT
µP
µP
µP
LT
Adr =1
Adr = 0
Adr = 2
Adr = 0
Adr = 3
Adr = 0
EOC Adr = 3
EOC
Processing
Adr = 0
EOC Adr = 0
EOC
Processing
ITD04216
Figure 96
EOC-Handling in Repeater Applications
Semiconductor Group
257
Data Sheet 01.99
INFINEON [ Infineon ]
