Rainbow Electronics W90N745CDG - Manual (Page 143)

W90N745CD/W90N745CDG
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Continued.
BITS DESCRIPTIONS
[18] TXCP
The Transmit Completion Interrupt indicates the packet
transmission has completed correctly.
If the TXCP is high and EnTXCP of MIEN register is enabled, the
TxINTR will be high. Write 1 to this bit clears the TXCP status.
1’b0: The packet transmission doesn’t complete.
1’b1: The packet transmission has completed.
[17] TXEMP
The Transmit FIFO Underflow Interrupt high indicates the
TxFIFO underflow occurred during packet transmission. While the
TxFIFO underflow occurred, the EMC will retransmit the packet
automatically without S/W intervention. If the TxFIFO underflow
occurred often, it is recommended that modify TxFIFO threshold
control, the TxTHD of FFTCR register, to higher level.
If the TXEMP is high and EnTXEMP of MIEN register is enabled,
the TxINTR will be high. Write 1 to this bit clears the TXEMP
status.
1’b0: No TxFIFO underflow occurred during packet transmission.
1’b0: TxFIFO underflow occurred during packet transmission.
[16] TXINTR
The Transmit Interrupt indicates the Tx interrupt status.
If TXINTR high and its corresponding enable bit, EnTXINTR of
MISTA register, is also high indicates the EMC generates Tx
interrupt to CPU. If TXINTR is high but EnTXINTR of MISTA is
disabled, no Tx interrupt is generated.
The TXINTR is logic OR result of the bits 17~24 in MISTA register
do logic AND with the corresponding bits in MIEN register. In
other words, if one of the bits 17~24 in MISTA register is high and
its corresponding enable bit in MIEN register is also enabled, the
TXINTR will be high. Because the TXINTR is a logic OR result,
clears bits 17~24 of MISTA register makes TXINTR be cleared,
too.
1’b0: No status of bits 17~24 in MISTA is set or no enable of bits
17~24 in MIEN is turned on.
1’b1: At least one status of bits 17~24 in MISTA is set and its
corresponding enable bit is turned on.
[15] Reserved