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ST10F296 数据表(PDF) 194 Page - STMicroelectronics |
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ST10F296 数据表(HTML) 194 Page - STMicroelectronics |
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194 / 346 page ![]() Obsolete Product(s) - Obsolete Product(s) CAN modules ST10F296E 194/346 17.4 CAN bus configurations Depending on the application, CAN bus configuration may be one single bus with single or multiple interfaces or a multiple bus with single or multiple interfaces. The ST10F296E is able to support both situations. 17.4.1 Single CAN bus The single CAN bus multiple interface configuration may be implemented using two CAN transceivers as shown in Figure 67. Figure 67. Connection to a single CAN bus via separate CAN transceivers The ST10F296E also supports single CAN bus multiple (dual) interfaces using the open- drain option of the CANx_TxD output as shown in Figure 68. Due to the OR-wired connection, only one transceiver is required. In this case the design of the application must take into account the wire length and the noise environment. Figure 68. Connection to a single CAN bus via common CAN transceivers CAN1 RX TX CAN_H CAN_L CAN bus CAN2 RX TX XMISC.CANPAR = 0 CAN CAN transceiver transceiver P4.4 P4.7 P4.5 P4.6 OD = Open-drain output +5 V CAN CAN_H CAN_L CAN bus 2.7 k Ω OD transceiver XMISC.CANPAR = 0 CAN1 RX TX CAN2 RX TX P4.4 P4.7 P4.5 P4.6 OD Obsolete Product(s) - Obsolete Product(s) |
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