Datasheet

ENC28J60

DS39662E-page 66 .  2006-2012 Microchip Technology Inc.

U-0 R-0 R/C-0 R-0 R/C-0 R-0 R/C-0 R/C-0

— PKTIF DMAIF LINKIF TXIF r TXERIF RXERIF

bit 7 bit 0

Legend: r = Reserved bit

R = Readable bit C = Clearable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7 Unimplemented: Read as ‘0’

bit 6 PKTIF: Receive Packet Pending Interrupt Flag bit

1 = Receive buffer contains one or more unprocessed packets; cleared when PKTDEC is set

0 = Receive buffer is empty

bit 5 DMAIF: DMA Interrupt Flag bit

1 = DMA copy or checksum calculation has completed

0 = No DMA interrupt is pending

bit 4 LINKIF: Link Change Interrupt Flag bit

1 = PHY reports that the link status has changed; read PHIR register to clear

0 = Link status has not changed

bit 3 TXIF: Transmit Interrupt Flag bit

1 = Transmit request has ended

0 = No transmit interrupt is pending

bit 2 Reserved: Maintain as ‘0’

bit 1 TXERIF: Transmit Error Interrupt Flag bit

1 = A transmit error has occurred

0 = No transmit error has occurred

bit 0 RXERIF: Receive Error Interrupt Flag bit

1 = A packet was aborted because there is insufficient buffer space or the packet count is 255

0 = No receive error interrupt is pending