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ENC28J60T-C/SS датащи(PDF) 68 Page - Microchip Technology |
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ENC28J60T-C/SS датащи(HTML) 68 Page - Microchip Technology |
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68 / 96 page ![]() ENC28J60 DS39662B-page 66 Preliminary © 2006 Microchip Technology Inc. REGISTER 12-3: EIR: ETHERNET INTERRUPT REQUEST (FLAG) REGISTER 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 = 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 |
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