XRT75R12 Datasheet, PDF (71/89 Pages) Exar Corporation – TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

PRELIMINARY
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75R12
REV. P1.0.2
TABLE 28: XRT75R12 REGISTER MAP SHOWING INTERRUPT STATUS REGISTERS (ISR_N)
TABLE29:SOURCELEVELINTERRUPTSTATUSREGISTER -CHANNELNADDRESSLOCATION=0XM2
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
Change of FL
Condition
Interrupt Status
Ch_n
Change of LOL
Condition
Interrupt Status
Ch_n
Change of LOS Change of DMO
Condition
Condition
nterrupt Status Interrupt Status
Ch_n
Ch_n
RUR
RUR
RUR
RUR
BIT NUMBER
NAME
TYPE
DESCRIPTION
7-4
Reserved
3
Change of FL Con- RUR Change of FL (FIFO Limit Alarm) Condition Interrupt Status - Ch n:
dition Interrupt Sta-
tus
This RESET-upon-READ bit-field indicates whether or not the Change
of FL Condition Interrupt (for Channel n) has occurred since the last
read of this register.
0 - Indicates that the Change of FL Condition Interrupt has NOT
occurred since the last read of this register.
1 - Indicates that the Change of FL Condition Interrupt has occurred
since the last read of this register.
NOTE: The user can determine the current state of the FIFO Alarm
condition by reading out the contents of Bit 3 (FL Alarm
Declared) within the Alarm Status Register.(n)
2
Change of LOL RUR Change of Receive LOL (Loss of Lock) Condition Interrupt Status
Condition Interrupt
- Ch n:
Status
This RESET-upon-READ bit-field indicates whether or not the Change
of Receive LOL Condition Interrupt (for Channel n) has occurred since
the last read of this register.
0 - Indicates that the Change of Receive LOL Condition Interrupt has
NOT occurred since the last read of this register.
1 - Indicates that the Change of Receive LOL Condition Interrupt has
occurred since the last read of this register.
NOTE: The user can determine the current state of the Receive LOL
Defect condition by reading out the contents of Bit 2 (Receive
LOL Defect Declared) within the Alarm Status Register.(n)
68