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Renesas RH850 Series Application Note

Renesas RH850 Series
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RH850 Series CAN Transmit Procedure (CAN FD Mode)
R01AN6029EJ0100 Rev.1.0 Page
10
of 42
May 10, 2017
2.3 One-Shot Transmission Function
When the TMOM bit of the RSCFDn(CFD)TMCp register is set to 1 (one-shot transmission is enabled), transmission is
performed only once. Even if an arbitration lost or an error occurs, retransmission is not performed.
The result of one-shot transmission can be confirmed by the TMTRF [1: 0] flag in the TMSTSp register. If the
one-shot transmission is successful, the transmit buffer transmission result status is transmission complete: no transmit
abort request (TMTRF [1: 0] flag is “B'10”) or transmission complete: There is a transmit abort request (TMTRF [1: 0]
flag will be “B'11”). If an arbitration lost or an error occurs, abort is completed (TMTRF [1: 0] flag is “B’01”). (Refer
to "2.2 Transmit Abort Function" for transmission completion: There is a transmit abort request (TMTRF [1: 0] flag is
"B'11")). Figure 2-6 shows the operation of one-shot transmission.
Figure 2-6 Operation of One-shot Transmission
Transmit buffer
Msg
Msg
CAN Bus
Msg
Transmission completion interrupt source activated
Programmatically
Transmit data set
Transmit request set
One-shot request set
Transmit buffer
Msg
Msg
CAN Bus
Msg
Transmission
completed
successfully
When an arbitration lost or
an error occurs
Stop when an arbitration
lost or an error occurs
Transmission data
Transmission data
Transmission completion interrupt source activated

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Renesas RH850 Series Specifications

General IconGeneral
CoreRH850
Operating Voltage2.7V to 5.5V
Package OptionsLQFP, BGA
Communication InterfacesCAN, LIN, FlexRay, Ethernet, SPI, I2C, UART
Target ApplicationsAutomotive, Industrial
TimersMultiple timers
ADC12-bit, 10-bit
Security FeaturesHardware Security Module (HSM)
Safety FeaturesMemory Protection

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