XRT72L71 Datasheet, PDF (93/102 Pages) Exar Corporation – DS3 ATM UNI/CLEAR CHANNEL FRAMER

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XRT72L71
DS3 ATM UNI/CLEAR CHANNEL FRAMER
REV. 1.1.0
REGISTER 107
TABLE 108: RX UTOPIA INTERRUPT ENABLE/STATUS REGISTER
RX UTOPIA INTERRUPT ENABLE/STATUS REGISTER
HEX ADDRESS: 0X6B
BIT
FUNCTION
7 Unused
TYPE
RO
DEFAULT
0
DESCRIPTION-OPERATION
6 R FIFO Reset
0: Normal operation
A “0” to “1” transition resets the Read-Write pointers and FIFO memory
R/W
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
5
Rx FIFO Overrun Interrupt
Enable
R/W
0: Disables the “Rx FIFO Over-run” interrupt.
1: Enables the “Rx FIFO Over-run” interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
4
Rx FIFO Underrun Inter-
rupt Enable
RO
3 RCOCA Interrupt Enable
R/W
0: Disables the “Rx FIFO Under-run” interrupt.
1: Enables the “Rx FIFO Under-run” interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
0: Disables the “Detection of RxRUNT Cell” Interrupt.
1: Enables the “Detection of RxRUNT Cell” Interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
2
R FIFO Ovr Interrupt Sta-
tus
RUR
0: Indicates that the “RxFIFO Overrun” Interrupt has NOT occurred since the
last read of this register.
1: Indicates that the “RxFIFO Overrun” Interrupt has occurred since the last
0
read of this register.
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
1
R FIFO Under Interrupt
Status
RO
0: Indicates that the “RxFIFO Underrun” Interrupt has NOT occurred since
the last read of this register.
1: Indicates that the “RxFIFO Underrun” Interrupt has occurred since the last
0
read of this register.
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
0 RCOCA Interrupt Stats
RUR
0: Indicates that the “Detection of RUNT Cell” Interrupt has NOT occurred
since the last read of this register.
1: Indicates that the “Detection of RUNT Cell” Interrupt has occurred since
0
the last read of this register.
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
REGISTER 108
BIT
FUNCTION
7-5 Unused
4-0 Rx UTOPIA Address
TYPE
RO
R/W
TABLE 109: RX UTOPIA ADDRESS
RX UTOPIA ADDRESS
HEX ADDRESS: 0X6C
DEFAULT
DESCRIPTION-OPERATION
000
00000
Programmable Rx UTOPIA address register to select device
89