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XRT72L73
THREE CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER IC
PRELIMINARY
REV. P1.0.1
63
T
ABLE
23:
T
X
DS3 C
ONFIGURATION
R
EGISTER
R
EGISTER
22 T
X
DS3 C
ONFIGURATION
R
EGISTER
H
EX
A
DDRESS
: 0
X
16
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Tx Yellow Alarm
R/W
0
0: X-bits are transmitted as conditions (detected by the “Receive DS3
Framer” block) dictate.
1: All X-bits (within each “outbound” DS3 frame) are set to “0” (forced inser-
tion of Yellow Alarm)
N
OTE
:
This bit-field is ignored when the “TxIdle”, the “TxAIS” or the
“TxLOS” bits are set.
6
Tx XBit
R/W
0
0: X-bits are transmitted as conditions (detected by the “Receive DS3
Framer” block) dictate.
1: All X-bits (within each “outbound” DS3 frame) are forced to “1”.
N
OTE
:
This bit-field is ignored when the “TxIdle”, the “TxAIS” or the
“TxLOS” bits are set.
5
Tx Idle
R/W
0
0: The Idle pattern is NOT transmitted into the “outbound” DS3 data stream.
1: The Idle pattern is transmitted into the “outbound” DS3 data stream.
N
OTE
:
This bit-field is ignored when the “TxAIS” or the “TxLOS” bits are set.
4
Tx AIS
R/W
0
0: The “AIS” pattern is NOT transmitted into the “outbound” DS3 data
stream.
1: The “AIS” pattern is transmitted into the “outbound” DS3 data stream.
N
OTE
:
This bit-field is ignored when the “TxLOS” bit is set.
3
Tx LOS
R/W
0
0: The “All Zeros” pattern is NOT transmitted into the “outbound” DS3 data
stream.
1: The “LOS” (e.g., “All Zeros”) pattern is transmitted into the “outbound”
DS3 data stream.
2
FERF on LOS
R/W
1
0: FERF (Far-End Receive Failure) is NOT transmitted whenever the
Receive DS3 Framer block declares an LOS (Loss of Signal) condition.
1: FERF is transmitted whenever the Receive DS3 Framer block declares an
LOS condition.
1
FERF on OOF
R/W
1
0: FERF (Far-End Receive Failure) is NOT transmitted whenever the
Receive DS3 Framer block declares an OOF (Out of Frame) condition.
1: FERF is transmitted whenever the Receive DS3 Framer block declares an
OOF condition.
0
FERF on AIS
R/W
1
0: FERF is NOT transmitted whenever the Receive DS3 Framer block
detects an AIS pattern in the “inbound” DS3 data stream.
1: FERF is transmitted whenever the Receive DS3 Framer block detects the
AIS pattern in the “inbound” DS3 data stream.