SH7263 Datasheet, PDF (957/1862 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 19 Controller Area Network (RCAN-TL1)
Important: When a message is received and a matching Mailbox is found, the whole message is
stored into the Mailbox. This means that, if the LAFM is used, the STDID, RTR, IDE and EXTID
may differ to the ones originally set as they are updated with the STDID, RTR, IDE and EXTID of
the received message.
STD_LAFM[10:0] — Filter mask bits for the CAN base identifier [10:0] bits.
STD_LAFM[10:0]
0
1
Description
Corresponding STD_ID bit is cared
Corresponding STD_ID bit is "don't cared"
EXT_LAFM[17:0] — Filter mask bits for the CAN Extended identifier [17:0] bits.
EXT_LAFM[17:0]
0
1
Description
Corresponding EXT_ID bit is cared
Corresponding EXT_ID bit is "don't cared"
IDE_LAFM — Filter mask bit for the CAN IDE bit.
IDE_LAFM
0
1
Description
Corresponding IDE bit is cared
Corresponding IDE bit is "don't cared"
(3) Message Data Fields
Storage for the CAN message data that is transmitted or received. MSG_DATA[0] corresponds to
the first data byte that is transmitted or received. The bit order on the CAN bus is bit 7 through to
bit 0.
When CMAX!= 3'b111/MBC[30] = 3'b000 and TXPR[30] is set, Mailbox-30 is configured as
transmission of time reference. Its DLC must be greater than 0 and its RTR must be zero (as
specified for TTCAN Level 1) so that the Cycle_count (CCR register) is embedded in the first
byte of the data field instead of MSG_DATA_0[5:0] when this Mailbox starts transmission. This
function shall be used when RCAN-TL1 is enabled to work in TTCAN mode to perform a
Potential Time Master role to send the Time reference message. MSG_DATA_0[7:6] is still
transmitted as stored in the Mailbox. User can set MSG_DATA_0[7] when a Next_is_Gap needs
to be transmitted.
Rev. 2.00 Mar. 14, 2008 Page 923 of 1824
REJ09B0290-0200