XRT79L71 Datasheet, PDF (152/441 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
RXE3 INTERRUPT ENABLE REGISTER # 1 - G.751 (DIRECT ADDRESS = 0X1112)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
Unused
COFA
Interrupt
Enable
Change in
OOF State
Interrupt
Enable
Change in
LOF State
Interrupt
Enable
Change in
LOS State
Interrupt
Enable
R/O
R/O
R/O
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
BIT 0
Change in
AIS State
Interrupt
Enable
R/W
0
BIT NUMBER
NAME
7-5
Unused
4
COFA Interrupt Enable
3
Change in OOF State
Interrupt Enable
2
Change in LOF State
Interrupt Enable
TYPE
R/O
R/W
R/W
R/W
DESCRIPTION
Change of Framing Alignment Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or
disable the "Change of Framing Alignment" Interrupt, within the
Channel. If the user enables this interrupt, then the Frame Syn-
chronizer block will generate an interrupt anytime it detects a
Change in Frame Alignment (e.g., the FAS bits have appeared to
move to a different location in the E3 data stream).
Change in OOF Condition Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or
disable the "Change in OOF (Out of Frame) Condition" Interrupt,
within the Channel. If the user enables this interrupt, then the
Frame Synchronizer block will generate an interrupt in response
to either of the following conditions.
• The instant that the channel declares an OOF condition.
• The instant that the channel clears the OOF condition.
0 - Disables the "Change in OOF Condition" Interrupt.
1 - Enables the "Change in OOF Condition" Interrupt.
This bit-field is ignored if the Frame Synchronizer block is by-
passed.
Change in LOF Condition Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or
disable the "Change in LOF (Loss of Frame) Condition" Interrupt,
within the Channel. If the user enables this interrupt, then the
Frame Synchronizer block will generate an interrupt in response
to either of the following conditions.
• The instant that the channel declares an LOF condition.
• The instant that the channel clears the LOF condition.
0 - Disables the "Change in LOF Condition" Interrupt.
1 - Enables the "Change in LOF Condition" Interrupt.
NOTE: This bit-field is ignored if the Frame Synchronizer block is
by-passed.
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