SH7760 Datasheet, PDF (817/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Address
Bit
H'104 + N*32 5
4
3
2
1
0
Bit Name Description
CBE
CAN Bus Error
An external fault-tolerant CAN transceiver can be used
together with the HCAN2 module. In such case the error output
pin of the transceiver must be connected to the CAN_NERR
pin. The value of CAN_NERR is stored into the CBE bit at the
end of each Transmit/Receive (if the message is stored). This
bit reports the inverted value of the CAN_NERR pin. Then,
using a transceiver with error pin active low, CBE shows a
potential physical error with the CAN bus when set to 1. If a
transceiver with error pin active high is used the notation must
be inverted. As the CAN_NERR value will be updated after
transmission or reception in the correspondent Mailbox non-
interrupt is dedicated for this function but instead the interrupt
for successful transmission (IRR8) or reception (IRR2) should
be considered.

Reserved
The write value should always be 0. The read value is not
guaranteed.
DLC3
DLC2
DLC1
DLC0
Data Length Code
These bits encode the number of bytes from 0, 1, 2, … 8 that
will be transmitted in a Data Frame.
0000: Data length = 0 byte
0001: Data length = 1 byte
0010: Data length = 2 bytes
0011: Data length = 3 bytes
0100: Data length = 4 bytes
0101: Data length = 5 bytes
0110: Data length = 6 bytes
0111: Data length = 7 bytes
1xxx: Data length = 8 bytes
Rev. 1.0, 02/03, page 767 of 1294