70353C Datasheet, PDF (18/76 Pages) Microchip Technology – Section 21. Enhanced Controller Area Network

dsPIC33E/PIC24E Family Reference Manual
Register 21-13: CiBUFPNT4: ECAN Filter 12-15 Buffer Pointer Register
R/W-0
bit 15
R/W-0
R/W-0
F15BP<3:0>
R/W-0
R/W-0
R/W-0
R/W-0
F14BP<3:0>
R/W-0
bit 8
R/W-0
bit 7
R/W-0
R/W-0
F13BP<3:0>
R/W-0
R/W-0
R/W-0
R/W-0
F12BP<3:0>
R/W-0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-12
bit 11-8
bit 7-4
bit 3-0
F15BP<3:0>: RX Buffer mask for Filter 15 bits
1111 = Filter hits received in RX FIFO buffer
1110 = Filter hits received in RX Buffer 14
•
•
•
0001 = Filter hits received in RX Buffer 1
0000 = Filter hits received in RX Buffer 0
F14BP<3:0>: RX Buffer mask for Filter 14 bits (same values as bits 15-12)
F13BP<3:0>: RX Buffer mask for Filter 13 bits (same values as bits 15-12)
F12BP<3:0>: RX Buffer mask for Filter 12 bits (same values as bits 15-12)
Register 21-14: CiRXFUL1: ECAN Receive Buffer Full Register 1
R/C-0
bit 15
R/C-0
R/C-0
R/C-0
R/C-0
RXFUL<15:8>
R/C-0
R/C-0
R/C-0
bit 8
R/C-0
bit 7
R/C-0
R/C-0
R/C-0
R/C-0
RXFUL<7:0>
R/C-0
R/C-0
R/C-0
bit 0
Legend:
R = Readable bit
-n = Value at POR
C = Writable bit, but only ‘0’ can be written to clear the bit
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-0
RXFUL<15:0>: Receive Buffer n Full bits
1 = Buffer is full (set by module)
0 = Buffer is empty (cleared by software)
DS70353C-page 21-18
© 2008-2011 Microchip Technology Inc.