r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 757

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

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STDID[10:0]: These bits set the identifier (standard identifier) of data frames and remote frames.
EXTID[17:0]: These bits set the identifier (extended identifier) of data frames and remote frames.
RTR (Remote Transmission Request bit) : Used to distinguish between data frames and remote
frames. This bit is overwritten by received CAN Frames depending on Data Frames or Remote
Frames.
Important: Please note that, when ATX bit is set with the setting MBC=001(bin), the RTR bit
will never be set. When a Remote Frame is received, the CPU can be notified by the
corresponding RFPR set or IRR[2] (Remote Frame Request Interrupt), however, as RCAN-ET
needs to transmit the current message as a Data Frame, the RTR bit remains unchanged.
Important: In order to support automatic answer to remote frame when MBC=001(bin) is used
and ATX=1 the RTR flag must be programmed to zero to allow data frame to be transmitted.
Note: when a Mailbox is configured to send a remote frame request the DLC used for
IDE (Identifier Extension bit) : Used to distinguish between the standard format and extended
format of CAN data frames and remote frames.
RTR
0
1
IDE
0
1
Message Control Field
transmission is the one stored into the Mailbox.
Description
Data frame
Remote frame
Description
Standard format
Extended format
Section 19 Controller Area Network (RCAN-ET)
Rev. 1.00 Sep. 21, 2007 Page 731 of 1124
REJ09B0402-0100