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PIC18F4680ISPQTP bảng dữ liệu(PDF) 307 Page - Microchip Technology |
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PIC18F4680ISPQTP bảng dữ liệu(HTML) 307 Page - Microchip Technology |
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307 / 482 page ![]() © 2007 Microchip Technology Inc. Preliminary DS39625C-page 305 PIC18F2585/2680/4585/4680 REGISTER 23-45: RXFCONn: RECEIVE FILTER CONTROL REGISTER n [0 ≤ n ≤ 1](1) REGISTER 23-46: SDFLC: STANDARD DATA BYTES FILTER LENGTH COUNT REGISTER(1) RXFCON0 R/W-0 R/W-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 RXF7EN RXF6EN RXF5EN RXF4EN RXF3EN RXF2EN RXF1EN RXF0EN RXFCON1 R/W-0 R/W-0 R/W-0 R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 RXF15EN RXF14EN RXF13EN RXF12EN RXF11EN RXF10EN RXF9EN RXF8EN bit 7 bit 0 bit 7-0 RXFnEN: Receive Filter n Enable bits 0 = Filter is disabled 1 = Filter is enabled Note 1: This register is available in Mode 1 and 2 only. 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 Note: Registers 23-46 through 23-51are writable in Configuration mode only. U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — — — FLC4FLC3FLC2FLC1FLC0 bit 7 bit 0 bit 7-5 Unimplemented: Read as ‘0’ bit 4-0 FLC4:FLC0: Filter Length Count bits Mode 0: Not used; forced to ‘00000’. 00000 -10010 = 0 18 bits are available for standard data byte filter. Actual number of bits used depends on DLC3:DLC0 bits (RXBnDLC<3:0> or BnDLC<3:0> if configured as RX buffer) of message being received. If DLC3:DLC0 = 0000 No bits will be compared with incoming data bits If DLC3:DLC0 = 0001 Up to 8 data bits of RXFnEID<7:0>, as determined by FLC2:FLC0, will be compared with the corresponding number of data bits of the incoming message If DLC3:DLC0 = 0010 Up to 16 data bits of RXFnEID<15:0>, as determined by FLC3:FLC0, will be compared with the corresponding number of data bits of the incoming message If DLC3:DLC0 = 0011 Up to 18 data bits of RXFnEID<17:0>, as determined by FLC4:FLC0, will be compared with the corresponding number of data bits of the incoming message Note 1: This register is available in Mode 1 and 2 only. 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 |
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