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CY8CKIT-059 数据表(PDF) 48 Page - Infineon Technologies AG |
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CY8CKIT-059 数据表(HTML) 48 Page - Infineon Technologies AG |
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48 / 140 page  Document Number: 001-84932 Rev. *N Page 47 of 139 PSoC® 5LP: CY8C58LP Family Datasheet 7.5 CAN The CAN peripheral is a fully functional Controller Area Network (CAN) supporting communication baud rates up to 1 Mbps. The CAN controller implements the CAN2.0A and CAN2.0B specifications as defined in the Bosch specification and conforms to the ISO-11898-1 standard. The CAN protocol was originally designed for automotive applications with a focus on a high level of fault detection. This ensures high communication reliability at a low cost. Because of its success in automotive applications, CAN is used as a standard communication protocol for motion oriented machine control networks (CANOpen) and factory automation applications (DeviceNet). The CAN controller features allow the efficient implementation of higher level protocols without affecting the performance of the microcontroller CPU. Full configuration support is provided in PSoC Creator. Figure 7-14. CAN Bus System Implementation 7.5.1 CAN Features CAN2.0A/B protocol implementation - ISO 11898 compliant Standard and extended frames with up to 8 bytes of data per frame Message filter capabilities Remote Transmission Request (RTR) support Programmable bit rate up to 1 Mbps Listen Only mode SW readable error counter and indicator Sleep mode: Wake the device from sleep with activity on the Rx pin Supports two or three wire interface to external transceiver (Tx, Rx, and Enable). The three-wire interface is compatible with the Philips PHY; the PHY is not included on-chip. The three wires can be routed to any I/O Enhanced interrupt controller CAN receive and transmit buffers status CAN controller error status including BusOff Receive path 16 receive buffers each with its own message filter Enhanced hardware message filter implementation that covers the ID, IDE and RTR DeviceNet addressing support Multiple receive buffers linkable to build a larger receive message array Automatic transmission request (RTR) response handler Lost received message notification Transmit path Eight transmit buffers Programmable transmit priority Round robin Fixed priority Message transmissions abort capability 7.5.2 Software Tools Support CAN Controller configuration integrated into PSoC Creator: CAN Configuration walkthrough with bit timing analyzer Receive filter setup CAN Node 1 PSoC CAN Controller CAN Transceiver Tx Rx En CAN Node 2 CAN Node n CAN_H CAN_L CAN_H CAN_L CAN_H CAN_L CAN Drivers CAN Bus |
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