psf21911 ETC-unknow, psf21911 Datasheet - Page 52

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Semiconductor Group
MON-0 Structure
Addr: Address
d/m:
i1-i8:
EOC Auto Mode
Acknowledgment: All received EOC-frames are echoed back to the exchange
immediately without triple-last-look. If an address other than (000
a HOLD message with address 000
IEC-Q TE will send a ’UTC’ after three consecutive receptions of d/m = (0) or after an
undefined command.
Latching: All detected EOC-commands are latched, i.e. they are valid as long as they
are not disabled with the EOC ’RTN’ command or a deactivation.
Transfer to IOM: With the triple-last-look criteria fulfilled the new EOC-command will be
passed to IOM-2 with one single MON-0-message, independently of the address used
and the status of the d/m indicator. MON-0-commands from IOM will be ignored.
Execution: The EOC-commands listed in table 8 will be executed automatically by the
PSB 21911 if they were addressed correctly (000
message (1). The execution of a command is performed only after the “triple-last-look”
criterion is met.
MON-0
0 0 0 0
Data/Message
EOC Code
1. Byte
– 0 = NT
– 1 … 6 = Repeater
– 7 = Broadcast
– 0 = Data
– 1 = Message
– 00 … FF
Addr. | d/m
A A A | X
H
B
= coded EOC command/indication
is returned. However, there is an exception: The
52
i1 i2 i3 i4
B
or 111
B
) and the d/m bit was set to
EOC Code
2. Byte
B
) or (111
i5 i6 i7 i8
U-Transceiver
B
PSB 21911
PSF 21911
) is received,
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