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MCP2518FD 数据表(PDF) 33 Page - Microchip Technology |
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MCP2518FD 数据表(HTML) 33 Page - Microchip Technology |
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33 / 96 page ![]() 2019 Microchip Technology Inc. DS20006027A-page 33 MCP2518FD REGISTER 3-13: CiVEC – INTERRUPT CODE REGISTER U-0 R-1 R-0 R-0 R-0 R-0 R-0 R-0 — RXCODE<6:0>( 1) bit 31 bit 24 U-0 R-1 R-0 R-0 R-0 R-0 R-0 R-0 — TXCODE<6:0>( 1) bit 23 bit 16 U-0 U-0 U-0 R-0 R-0 R-0 R-0 R-0 — — —FILHIT<4:0>( 1) bit 15 bit 8 U-0 R-1 R-0 R-0 R-0 R-0 R-0 R-0 — ICODE<6:0>( 1) bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 31 Unimplemented: Read as ‘0’ bit 30-24 RXCODE<6:0>: Receive Interrupt Flag Code bits( 1) 1000001-1111111 = Reserved 1000000 = No interrupt 0100000-0111111 = Reserved 0011111 = FIFO 31 Interrupt (RFIF<31> set) ... 0000010 = FIFO 2 Interrupt (RFIF<2> set) 0000001 = FIFO 1 Interrupt (RFIF<1> set) 0000000 = Reserved. FIFO 0 can’t receive. bit 23 Unimplemented: Read as ‘0’ bit 22-16 TXCODE<6:0>: Transmit Interrupt Flag Code bits( 1) 1000001-1111111 = Reserved 1000000 = No interrupt 0100000-0111111 = Reserved 0011111 = FIFO 31 Interrupt (TFIF<31> set) ... 0000001 = FIFO 1 Interrupt (TFIF<1> set) 0000000 = TXQ Interrupt (TFIF<0> set) bit 15-13 Unimplemented: Read as ‘0’ bit 12-8 FILHIT<4:0>: Filter Hit Number bits( 1) 11111 = Filter 31 11110 = Filter 30 ... 00001 = Filter 1 00000 = Filter 0 Note 1: If multiple interrupts are pending, the interrupt with the highest number will be indicated. |
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