PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 110
PEF2091
Manufacturer Part Number
PEF2091
Description
ICs for Communications(ISDN Echocancellation Circuit)
Manufacturer
Siemens Semiconductor Group
Datasheet
1.PEF2091.pdf
(298 pages)
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Figure 47
4.2.2
The MON-0-commands provide access to device internal EOC-registers. Via MON-0 the
EOC overhead bits of the U-interface are controlled. This access is only possible in
states where the IEC-Q transmits superframe indications (ISW) and the Receiver is
synchronized. This is the case in the following states:
Figures 48 and 49 sketch EOC access in these states.
LT Modes
EC-Converged
EQ-Training
Line Active
Pend. Transparent
Transparent
Pend. Deactivation
S/T Deactivated
Time
Access to EOC of U-Interface
Access to Data Received from U
M5-M6
2 Bit
1 Bit
M4
NT Modes
Synchronized
Wait for ACT
Transparent
Error S/T
Pend. Deac. U
U Basic Frame
1.5 ms
M1-M3
3 Bits
110
12x (2B+D)
216 Bits
Data
Receiver
FIFO
18 Bits
Fixed
(I)SW
Operational Description
2B+D
To IOM
µP (if used)
Receiver
(From U)
Data Sheet 01.99
®
Data
-2 and
PEB 2091
PEF 2091
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