Microchip Technology dsPIC30F - Page 615

© 2004 Microchip Technology Inc. DS70070B-page 23-17
Section 23. CAN
CAN Module
23
Register 23-20: CiCFG2: Baud Rate Configuration Register 2
Upper Byte:
U-0 R/W-x U-0 U-0 U-0 R/W-x R/W-x R/W-x
—WAKFIL — — — SEG2PH<2:0>
bit 15 bit 8
Lower Byte:
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
SEG2PHT
S
SAM SEG1PH<2:0> PRSEG<2:0>
bit 7 bit 0
bit 15 Unimplemented: Read as ‘0’
bit 14 WAKFIL: Select CAN bus Line Filter for Wake-up bit
1 = Use CAN bus line filter for wake-up
0 = CAN bus line filter is not used for wake-up
bit 13-11 Unimplemented: Read as ‘0’
bit 10-8 SEG2PH<2:0>: Phase Buffer Segment 2 bits
111 = length is 8 x T
Q
.
.
000 = length is 1 x T
Q
bit 7 SEG2PHTS: Phase Segment 2 Time Select bit
1 = Freely programmable
0 = Maximum of SEG1PH or information processing time (3 T
Q’s), whichever is greater
bit 6 SAM: Sample of the CAN bus Line bit
1 = Bus line is sampled three times at the sample point
0 = Bus line is sampled once at the sample point
bit 5-3 SEG1PH<2:0>: Phase Buffer Segment 1 bits
111 = length is 8 x T
Q
.
.
000 = length is 1 x T
Q
bit 2-0 PRSEG<2:0>: Propagation Time Segment bits
111 = length is 8 x T
Q
.
.
000 = length is 1 x T
Q
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