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STR720 数据表(PDF) 226 Page - STMicroelectronics |
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STR720 数据表(HTML) 226 Page - STMicroelectronics |
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226 / 401 page ![]() STR720 - CONTROLLER AREA NETWORK (CAN) 226/401 IFn Data A/B Registers (CAN_IFn_DAnR and CAN_IFn_DBnR) The data bytes of CAN messages are stored in the IFn Message Buffer Registers in the following order: In a CAN Data Frame, Data(0) is the first, Data(7) is the last byte to be transmitted or received. In CAN’s serial bit stream, the MSB of each byte will be transmitted first. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 IF1 Message Data A1 (address 0x3C) Data(1) Data(0) IF1 Message Data A2 (address 0x40) Data(3) Data(2) IF1 Message Data B1 (address 0x44) Data(5) Data(4) IF1 Message Data B2 (address 0x48) Data(7) Data(6) IF2 Message Data A1 (address 0x9C) Data(1) Data(0) IF2 Message Data A2 (address 0xA0) Data(3) Data(2) IF2 Message Data B1 (address 0xA4) Data(5) Data(4) IF2 Message Data B2 (address 0xA8) Data(7) Data(6) rw rw 1 |
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