XRT79L71 Datasheet, PDF (222/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

XRT79L71
REV. P1.0.3
PRELIMINARY
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1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
TRANSMIT E3, ITU-T G.832 RELATED REGISTERS
TXE3 CONFIGURATION REGISTER - G.832 (DIRECT ADDRESS = 0X1130)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
Unused
TxDL in NR Reserved TxAIS Enable
R/O
R/O
R/O
R/W
R/O
R/W
0
0
0
0
0
0
BIT 1
TxLOS
Enable
R/W
0
BIT 0
TxMA Rx
R/W
0
BIT NUMBER
NAME
7-5
Unused
4
TxDL in NR
3
Unused
2
TxAIS Enable
1
TxLOS Enable
TYPE
R/O
R/W
R/O
R/W
R/W
DESCRIPTION
Transmit DL (Data Link Channel) in NR Byte:
This READ/WRITE bit-field permits the user to configure the
Frame Generator to use either the NR or the GC byte as the
LAPD/PMDL channel.
0 - Configures the Frame Generator to transmit all "outbound"
LAPD/PMDL Messages via the GC byte.
1 - Configures the Frame Generator to transmit all "outbound"
LAPD/PMDL Messages via the NR byte.
Transmit AIS Indicator:
This READ/WRITE bit-field permits the user to (by software con-
trol) force the Frame Generator to generate and transmit the AIS
indicator to the remote terminal equipment.
0 - Does not configure the Frame Generator to generate and
transmit the AIS indicator.
1 - Configures the Frame Generator to generate and transmit the
AIS indicator. In this case, the Frame Generator will force all bits
(within the "outbound" E3 data stream) to an "All Ones" pattern.
NOTE: This bit-field is ignored if the Frame Generator has been
configured to transmit the LOS pattern.
Transmit LOS (Pattern) Enable:
This READ/WRITE bit-field permits the user to (by software con-
trol) force the Frame Generator block to transmit the LOS (Loss
of Signal) pattern to the remote terminal equipment.
0 - Does not configure the Frame Generator block to generate
and transmit the LOS pattern.
1 - Configures the Frame Generator block to generate and trans-
mit the LOS pattern. In this case, the Frame Generator block will
force all bits (within the "outbound" E3 data stream) to an "All
Zeros" pattern.
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