SH7058 Datasheet, PDF (575/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

Register Name
MBx[4], MBx[5]*
Address
Bit
H'104 + N×32 5
Bit Name
CBE
4 CLE
Note: * x/N: 0 to 31 (Indicates the mailbox number)
Description
CAN Bus Error
An external fault-tolerant CAN
transceiver can be used together with the
HCAN module. If the error output pin of
the transceiver (normally active low) is
connected to the CAN_NERR pin of this
LSI, the value of the CAN_NERR pin is
stored into this bit at the end of each
transmission/reception (if the message is
stored). The inverted value of the
CAN_NERR pin is set to this bit. If the
error output pin is active high, the setting
value is not inverted. When this bit is set,
it indicates a potential physical error with
the CAN bus. As the CAN_NERR value
is updated after the transmission or
reception in the corresponding mailbox,
non-interrupt is dedicated to this function
but instead the normal transmit end
interrupt (IRR6) and normal receive end
interrupt (IRR2) should be considered.
Important: This function is not supported
by the SH7058. Thus the write value
should be 0. The value read as the initial
value is not guaranteed.
Transmit Clear Enable
When this bit is set, message reception
in the corresponding mailbox cancels the
wait messages in the transmission
queue. This action is notified by IRR8
and ABACK.
Important: This function is not supported
by the SH7058. Thus the write value
should be 0. The value read as the initial
value is not guaranteed.
Rev. 3.0, 09/04, page 534 of 1086