XRT75R12 Datasheet, PDF (70/89 Pages) Exar Corporation – TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

XRT75R12
REV. P1.0.2
PRELIMINARY
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
BIT NUMBER
NAME
7-4
Reserved
3
Change of FL
Condition Interrupt
Enable - Ch n
2
Change of LOL
Condition Interrupt
Enable
1
Change of LOS
Condition Interrupt
Enable
0
Change of DMO
Condition Interrupt
Enable
TYPE
DESCRIPTION
R/O
R/W Change of FL (FIFO Limit Alarm) Condition Interrupt Enable - Ch
n:
This READ/WRITE bit-field is used to enable or disable the Change of
FIFO Limit Alarm Condition Interrupt. If the user enables this interrupt,
the XRT75R12 will generate an interrupt if any of the following events
occur.
• Whenever the Jitter Attenuator (within Channel n) declares the FL
(FIFO Limit Alarm) condition.
• Whenever the Jitter Attenuator (within Channel n) clears the FL
(FIFO Limit Alarm) condition.
0 - Disables the Change in FL Condition Interrupt.
1 - Enables the Change in FL Condition Interrupt.
R/W Change of Receive LOL (Loss of Lock) Condition Interrupt Enable
- Channel n:
This READ/WRITE bit-field is used to enable or disable the Change of
Receive LOL Condition Interrupt. If the user enables this interrupt,
then the XRT75R12 will generate an interrupt any time any of the fol-
lowing events occur.
• Whenever the Receive Section (within Channel n) declares the Loss
of Lock Condition.
• Whenever the Receive Section (within Channel n) clears the Loss of
Lock Condition.
0 - Disables the Change in Receive LOL Condition Interrupt.
1 - Enables the Change in Receive LOL Condition Interrupt.
R/W Change of the Receive LOS (Loss of Signal) Defect Condition
Interrupt Enable - Ch 0:
This READ/WRITE bit-field is used to enable or disable the Change of
the Receive LOS Defect Condition Interrupt. If the user enables this
interrupt, then the XRT75R12 will generate an interrupt any time any of
the following events occur.
• Whenever the Receive Section (within Channel n) declares the LOS
Defect Condition.
• Whenever the Receive Section (within Channel n) clears the LOS
Defect condition.
0 - Disables the Change in the LOS Defect Condition Interrupt.
1 - Enables the Change in the LOS Defect Condition Interrupt.
R/W Change of Transmit DMO (Drive Monitor Output) Condition Inter-
rupt Enable - Ch n:
This READ/WRITE bit-field is used to enable or disable the Change of
Transmit DMO Condition Interrupt. If the user enables this interrupt,
then the XRT75R12 will generate an interrupt any time any of the fol-
lowing events occur.
• Whenever the Transmit Section toggles the DMO output pin (or bit-
field) to "1".
• Whenever the Transmit Section toggles the DMO output pin (or bit-
field) to "0".
0 - Disables the Change in the DMO Condition Interrupt.
1 - Enables the Change in the DMO Condition Interrupt.
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