SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
The CAN-FD bootloader asynchronously transfers code from CAN-FD to internal memory and follows same bootloader execution flow as Section 4.7.6.2.4. The host can be any CAN-FD node. The communication is first done with 11-bit standard identifiers (with a MSGID of 0x1) using two bytes per data frame. The CAN-FD bootloader uses a fixed 64-byte payload size and default bit rate of 1Mbps for nominal phase and 2Mbps for data phase.
Mailbox 1 is programmed with a standard MSGID of 0x1 for boot-loader communication. The CAN-FD host transmits only two bytes at a time, LSB first and MSB next. For example, to transmit the word 0x08AA to the device, transmit AA first, followed by 08. The program flow of the CAN-FD bootloader is identical to the CAN bootloader.