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ST10F280 数据表(PDF) 119 Page - STMicroelectronics |
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ST10F280 数据表(HTML) 119 Page - STMicroelectronics |
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119 / 186 page  ST10F280 119/186 Multiple CAN Bus The ST10F280 provides 2 CAN interfaces to support the kind of bus configuration shown in Figure 61. 15.3 - Register and Message Object Organization All registers and message objects of the CAN controller are located in the special CAN address area of 256 bytes, which is mapped into segment 0 and uses addresses 00’EE00h through 00’EFFFh. All registers are organized as 16 bit registers, located on word addresses. However, all registers may be accessed byte wise in order to select special actions without effecting other mechanisms. Note The address map shown in Figure 62 lists the registers which are part of the CAN controller. There are also ST10F280 specific registers that are associated with the CAN Module. These registers, however, control the access to the CAN Module rather than its function. Figure 62 : CAN Module Address Map Figure 61 : Connection to Two Different CAN Buses (e.g. for gateway application) CAN1 RxD TxD CAN2 RxD TxD CAN Transceiver CAN Transceiver CAN_H CAN_H CAN CAN bus 2 bus 1 EF00h/EE00h EF02h/EE02h EF04h/EE04h EF06h/EE06h EF08h/EE08h EF0Ch/EE0Ch Message Object 15 Message Object 14 Message Object 13 Message Object 12 Message Object 11 Message Object 10 Message Object 9 Message Object 8 Message Object 7 Message Object 6 Message Object 5 Message Object 4 Message Object 3 Message Object 2 Message Object 1 General Registers CAN Address Area General Registers EF00h EF10h EF20h EF30h EF40h EF50h EF60h EF70h EF80h EF90h EFA0h EFB0h EFC0h EFD0h EFE0h EFF0h Control / Status Register Interrupt Register Bit Timing Register Global Mask Short Global Mask Long Mask of Last Message EE00h EE10h EE20h EE30h EE40h EE50h EE60h EE70h EE80h EE90h EEA0h EEB0h EEC0h EED0h EEE0h EEF0h CAN1 CAN2 |
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