NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 631 -
Revision V1.30
NUC97
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CHNIC
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[3]
LPIEN
Long Packet Interrupt Enable Control
The LPIEN controls the PTLE (EMACn_MISTA[3]) interrupt generation. If PTLE
(EMACn_MISTA[3]) is set, and both LPIEN and RXIEN (EMACn_MIEN[0]) are enabled,
the EMAC generates the RX interrupt to CPU. If LPIEN or RXIEN (EMACn_MIEN[0]) is
disabled, no RX interrupt is generated to CPU even the PTLE (EMACn_MISTA[3]) is set.
0 = PTLE (EMACn_MISTA[3]) trigger RX interrupt Disabled.
1 = PTLE (EMACn_MISTA[3]) trigger RX interrupt Enabled.
[2]
RXOVIEN
Receive FIFO Overflow Interrupt Enable Control
The RXOVIEN controls the RXOV (EMACn_MISTA[2]) interrupt generation. If RXOV
(EMACn_MISTA[2]) is set, and both RXOVIEN and RXIEN (EMACn_MIEN[0]) are
enabled, the EMAC generates the RX interrupt to CPU. If RXOVIEN or RXIEN
(EMACn_MIEN[0]) is disabled, no RX interrupt is generated to CPU even the RXOV
(EMACn_MISTA[2]) is set.
0 = RXOV (EMACn_MISTA[2]) trigger RX interrupt Disabled.
1 = RXOV (EMACn_MISTA[2]) trigger RX interrupt Enabled.
[1]
CRCEIEN
CRC Error Interrupt Enable Control
The CRCEIEN controls the CRCE (EMACn_MISTA[1]) interrupt generation. If CRCE
(EMACn_MISTA[1]) is set, and both CRCEIEN and RXIEN (EMACn_MIEN[0]) are
enabled, the EMAC generates the RX interrupt to CPU. If CRCEIEN or RXIEN
(EMACn_MIEN[0]) is disabled, no RX interrupt is generated to CPU even the CRCE
(EMACn_MISTA[1]) is set.
0 = CRCE (EMACn_MISTA[1]) trigger RX interrupt Disabled.
1 = CRCE (EMACn_MISTA[1]) trigger RX interrupt Enabled.
[0]
RXIEN
Receive Interrupt Enable Control
The RXIEN controls the RX interrupt generation.
If RXIEN is enabled and RXINTR (EMACn_MISTA[0]) is high, EMAC generates the RX
interrupt to CPU. If RXIEN is disabled, no RX interrupt is generated to CPU even any
status bit EMACn_MISTA[15:1] is set and the corresponding bit of EMACn_MIEN is
enabled. In other words, if S/W wants to receive RX interrupt from EMAC, this bit must be
enabled. And, if S/W doesn‟t want to receive any RX interrupt from EMAC, disables this
bit.
0 = RXINTR (EMACn_MISTA[0]) is masked and RX interrupt generation Disabled.
1 = RXINTR (EMACn_MISTA[0]) is not masked and RX interrupt generation Enabled.