1, C250 is the interface between the CAN controller and the physical bus, which can provide differential transmission and reception of the busIt is fully compatible with IS011898 standard, and has the ability to resist instantaneous interference in the automotive environment and protect the bus.
2. The CAN bus is connected to the physical bus through the two output terminals CANH and CANL on the CAN controller interface chip, and the state of the CANH end can only be high level or suspended state, and the CANL end can only be low level or suspended state.
3, CAN BUS many available chips, such as SJA1000 is an independent CAN controller. There are a lot of these online, depending on the application,If you just do the experiment, basically there is nothing to consider, as long as the communication rate is the same as CAN BUS, there is no problem. Other cases are more isolation or anti-interference on the circuit. There are also protocol issues with their own data.
4, single-chip computer (such as Fujitsu MB96F346) if there is an integrated CAN controller, the single-chip computer is directly connected to the CAN transceiver (such as PCA82C250), that is, you can communicate; If the single chip microcomputer does not have an integrated CAN controller (such as 51 single chip microcomputer), it is necessary to connect the single chip microcomputer to the CAN controller, and then connect to CSingle chip microcomputer integrated with CAN controller; For example, the P87C591 is a monolithic 8-bit high-performance microcontroller with an on-chip CAN controller. It uses the powerful 80C51 instruction set and successfully incorporates the powerful PeliCAN capabilities of the SJA1000 CAN controller.
Peripheral interface - includes USB 0 full speed device, Ethernet MAC with associated DMA controller, four UART with fractional baud rate generation, dual channel CAN controller, as well as SPI and two SSP controllers with FIFO, satisfiedDiverse communication needs. Digital audio - I2S interface supports digital audio input and output, and rich I2C interface provides multi-protocol compatibility. The soul of automotive electronics, the MCU plays a key role in the world of semiconductor engineers. Zhao's article delves into the wide application of automotive control chips, especially car-scale MCUS such as the ARM Cortex family. The performance parameters of these microcontrollers, such as operating voltage, main frequency, storage capacity and I/O interfaces, are specific to the four core domains of body, chassis, power and cabinThe requirements of.
MCU introduction Analysis/MCU, that is, the microcontroller, it is an integrated CPU, RAM, ROM and other core components of the monolithic solution, designed for efficient and accurate combined control. Historically, giants such as Intel, Zilog, ARM, MIPS and RISC-V have made indelible contributions to its development.
1, compatible with traditional CAN0A/B, compatible with CAN-FD, speed up to 5Mbps (data field).
2, because the CAN bus communication baud rate range is 5K-1000Kbps, so we configure the baud rate range for the device must be this. How much is that? It depends on your actual situation. If you need related USBCAN equipment, you can go to our website for specific consultation, welcome to visit.
3, hello, AmlogicT982 chip in the interface is there are three major upgrades. The first upgrade is supportUSB0 transfer. When transferring video files, the transmission rate is faster and the decompression ability is stronger. The second major upgrade is to support the HDMI1 interface, which can make the computer with the same screen, when playing games, the delay is lower, the experience is better, and the feeling is more immersive.
4. The figure above shows the functional block diagram of PCA82C250. For CAN controllers and devices with a CAN bus interface, the 82C250 is not a necessary device, because most CAN controllers have a flexible transceiver interface and allow bus failure, but the drive capacity is generally only allowed 20~ 30 nodes are connected to one bus. The 82C250 supports up to 110 nodes and can operate at 1Mbps in harsh electrical environments.