Renesas RH850 Series Application Note

RH850 Series CAN Transmit Procedure (CAN FD Mode)
R01AN6029EJ0100 Rev.1.0 Page
18
of 42
May 10, 2017
3. Transmission Using Transmit/Receive FIFO Buffers
Data frames or remote frames are transmitted with the transmit/receive FIFO buffer.
There are 3 transmit / receive FIFO buffers per channel and can store up to 128 messages. It will be sent in order
from the first stored message.
The transmit/receive FIFO buffer can be used in either receive mode, transmit mode, or gateway mode
★
(only
transmit mode is described in this chapter).
The transmit/receive FIFO buffer is linked to the transmit buffer (selected by the CFTML [3: 0] bit of the CFCCk
register). When the transmit/receive FIFO buffer is used (the CFE bit of the CFCCk register is set to “1”), the priority
determination of transmission is performed, and the priority determination is performed only for the next message to be
sent in the transmit/receive FIFO buffer.
The transmission function of the transmit/receive FIFO buffer is shown below. For the configuration settings for
using the transmit/receive FIFO buffer, refer to "CAN Configuration Application Note".
• ・Message transmit function
• ・Transmit abort function
• ・Interval transmission function

Renesas RH850 Series Specifications

General

Core	RH850
Operating Voltage	2.7V to 5.5V
Package Options	LQFP, BGA
Communication Interfaces	CAN, LIN, FlexRay, Ethernet, SPI, I2C, UART
Target Applications	Automotive, Industrial
Timers	Multiple timers
ADC	12-bit, 10-bit
Security Features	Hardware Security Module (HSM)
Safety Features	Memory Protection