Rainbow Electronics ATmega64M1 - Manual (Page 198)

198
8209A–AVR–08/09
ATmega16M1/32M1/64M1
Table 20-2. Examples of CAN Baud Rate Settings for Commonly Frequencies
f
CLK
IO
(MHz)
CAN
Rate
(Kbps)
Description Segments Registers
Sampling
Point
TQ
(µs)
Tbit
(TQ)
Tprs
(TQ)
Tph1
(TQ)
Tph2
(TQ)
Tsjw
(TQ) CANBT1 CANBT2 CANBT3
16.000
1000
69 % (1) 0.0625 16 7 4 4 1 0x00 0x0C 0x36 (2)
75 % 0.125 8 3 2 2 1 0x02 0x04 0x13
500 75 %
0.125 16 7 4 4 1 0x02 0x0C 0x37
0.250 8 3 2 2 1 0x06 0x04 0x13
250 75 %
0.250 16 7 4 4 1 0x06 0x0C 0x37
0.500 8 3 2 2 1 0x0E 0x04 0x13
200 75 %
0.3125 16 7 4 4 1 0x08 0x0C 0x37
0.625 8 3 2 2 1 0x12 0x04 0x13
125 75 %
0.500 16 7 4 4 1 0x0E 0x0C 0x37
1.000 8 3 2 2 1 0x1E 0x04 0x13
100 75 %
0.625 16 7 4 4 1 0x12 0x0C 0x37
1.250 8 3 2 2 1 0x26 0x04 0x13
12.000
1000 67 % (1)
0.083333 12 5 3 3 1 0x00 0x08 0x24 (2)
x - - - n o d a t a - - -
500 75 %
0.166666 12 5 3 3 1 0x02 0x08 0x25
0.250 8 3 2 2 1 0x04 0x04 0x13
250 75 %
0.250 16 7 4 4 1 0x04 0x0C 0x37
0.500 8 3 2 2 1 0x0A 0x04 0x13
200 75 %
0.250 20 8 6 5 1 0x04 0x0E 0x4B
0.416666 12 5 3 3 1 0x08 0x08 0x25
125 75 %
0.500 16 7 4 4 1 0x0A 0x0C 0x37
1.000 8 3 2 2 1 0x16 0x04 0x13
100 75 %
0.500 20 8 6 5 1 0x0A 0x0E 0x4B
0.833333 12 5 3 3 1 0x12 0x08 0x25