XRT72L71 Datasheet, PDF (95/102 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 110
TABLE 111: TX UTOPIA INTERRUPT/STATUS REGISTER
TX UTOPIA INTERRUPT/STATUS REGISTER
HEX ADDRESS: 0X6E
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7 Tx FIFO Reset
0 to 1 transition resets internal FIFO memory and its read-write pointers.
R/W
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
6 Discard Upon PErr
0: “Transmit UTOPIA” Parity errors do not result in cell discard
1: Cells in which a “Transmit UTOPIA” parity error is detected are discarded.
R/W
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
5
Tx Parity Error Interrupt
Enable
R/W
0: Disables the “Transmit UTOPIA Detection of Parity Error” Interrupt.
1: Enables the “Transmit UTOPIA Detection of Parity Error” Interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
4
Tx FIFO Overrun Interrupt
Enable
R/W
0: Disables the “TxFIFO Overrun” interrupt.
1: Enables the “TxFIFO Overrun” interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
3
TC Out of Cell Alignment
Interrupt Enable
R/W
0: Disables the “Detection of TxRUNT Cell” interrupt.
1: Enables the “Detection of TxRUNT Cell” interrupt.
0
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
2 TP Error Interrupt Status
RUR
0: Indicates that the “Detection of Transmit UTOPIA - Parity Error” Interrupt
has NOT occurred since the last read of this register.
1: Indicates that the “Detection of Transmit UTOPIA - Parity Error” Interrupt
0
has occurred since 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.
1 Tx FIFO Interrupt Status
RUR
0: Indicates that the “TxFIFO Overrun” Interrupt has NOT occurred since the
last read of this register.
1: Indicates that the “TxFIFO 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.
0 TC OCA Interrupt Status
RUR
0: Indicates that the “Detection of TxRUNT Cell” Interrupt has NOT occurred
since the last read of this register.
1: Indicates that the “Detection of TxRUNT 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 111
BIT
FUNCTION
TYPE
TABLE 112: FUTURE USE
FUTURE USE
HEX ADDRESS: 0X6F
DEFAULT
DESCRIPTION-OPERATION
91