XRT79L71 Datasheet, PDF (172/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

XRT79L71
REV. P1.0.3
BIT NUMBER
NAME
1
Change in LOS State
Interrupt Status
0
Change in AIS State
Interrupt Status
PRELIMINARY
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1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
TYPE
RUR
RUR
DESCRIPTION
Change in LOS (Loss of Signal) State Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the
"Change in LOS State" Interrupt has occurred since the last read
of this register.If this interrupt is enabled, then the DS3/E3
Framer block will generate the "Change in LOS State" Interrupt
will occur in response to the following events.
• When the DS3/E3 Frame Synchronizer block declares the
"LOS Condition".
• When the DS3/E3 Frame Synchronizer block clears the "LOS
Condition".
0 - Indicates that the "Change in LOS State Interrupt" has not
occurred since the last of this register.
1 - Indicates that the "Change in LOS State Interrupt" has
occurred since the last read of this register.
NOTE:
The user can determine the current state of the "AIS
Condition" by reading out the contents of Bit 4 (RxLOS)
within the "RxE3 Configuration and Status Register # 2 -
G.832" (Direct Address = 0x1111).
Change in AIS State Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the
"Change in AIS State" Interrupt has occurred since the last read
of this register.If this interrupt is enabled, then the DS3/E3
Framer block will generate the "Change in AIS State" Interrupt
will occur in response to the following events.
• When the DS3/E3 Frame Synchronizer block declares the
"AIS Condition".
• When the DS3/E3 Frame Synchronizer block clears the "AIS
Condition".
0 - Indicates that the "Change in AIS State Interrupt" has not
occurred since the last of this register.
1 - Indicates that the "Change in AIS State Interrupt" has
occurred since the last read of this register.
NOTE:
The user can determine the current state of the "AIS
Condition" by reading out the contents of Bit 3 (RxAIS)
within the "RxE3 Configuration and Status Register # 2 -
G.832" (Direct Address = 0x1111).
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