PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 111

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

Figure 48
Figure 49
In other states the EOC-processor clamps all EOC-maintenance bits to high when
EOC-bits are transmitted.
The address bits, d/m bit and the EOC code of the two byte MON-0 message (see Table
18 below) corresponds to the address bits , d/m bits and EOC code in the EOC channel
of the U-interface (see "U-Frame Structure", page 68). For more information on Monitor
Channel handling, see "IOM
mode "Monitor Channel Access", page 101. For a complete list of the available Monitor
Channel commands, see "MON-0 Codes", page 226.
Table 18
Semiconductor Group
Transmitter
MON-0
0 0 0 0
MON-0
From IOM
or µP
(To U)
Time
Data
Access to EOC Transmission on U
Access to EOC Received from U
Content of MON-0 Message
®
-2
1. Byte
M5-M6
2 Bit
Processor
EOC
18 Bits
Addr. | d/m
(I)SW
Fixed
A A A | 1
®
1 Bit
M4
-2 Monitor Channel", page 76 and for the microprocessor
U Basic Frame
12x (2B+D)
216 Bits
1.5 ms
Data
M1-M3
3 Bits
U Basic Frame
111
12x (2B+D)
1.5 ms
M1-M3
3 Bits
216 Bits
Data
E E E E
Processor
EOC
1 Bit
18 Bits
Fixed
M4
(I)SW
EOC Code
Operational Description
2. Byte
M5-M6
2 Bit
MON-0
To IOM
µP (if used)
Receiver
(From U)
Data Sheet 01.99
®
Time
E E E E
Data
-2 and
PEB 2091
PEF 2091