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32186 Datasheet(PDF) 646 Page - Renesas Technology Corp |
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32186 Datasheet(HTML) 646 Page - Renesas Technology Corp |
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646 / 1032 page  13 CAN MODULE 13-36 32185/32186 Group Hardware Manual Rev.1.10 REJ09B0235-0110 May 15, 07 13.2.7 CAN Baud Rate Prescalers CAN0 Baud Rate Prescaler (CAN0BRP) <Address: H’0080 1016> CAN1 Baud Rate Prescaler (CAN1BRP) <Address: H’0080 1416> 123456 b7 b0 BRP 00000001 <Upon exiting reset: H’01> b Bit Name Function R W 0–7 BRP CAN baud rate prescaler value R W This register sets the Tq period of CAN. The CAN baud rate is determined by (Tq period × number of Tq’s in one bit). Tq period = (BRP set value + 1) / (CPUCLK/4) CAN transfer baud rate = 1 Tq period × number of Tq’s in one bit Number of Tq’s in one bit = Synchronization Segment + Propagation Segment + Phase Segment 1 + Phase Segment 2 Notes: • Setting H’00 (divide by 1) is inhibited. • Do not change settings of the CAN Baud Rate Prescaler (CANnBRP) during CAN opera- tion (CAN Status Register CRS bit = "0"). • For Can module clock, select CPUCLK/4 in CAN Clock Select Register. 13.2 CAN Module Related Registers |
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