XC886/888CLM
Controller Area Network (MultiCAN) Controller
User’s Manual
15-80
V1.3, 2010-02
MultiCAN, V1.0
RXUPD
2
rh
Receive Updating
0
No receive update ongoing.
1
Message identifier, DLC, and data of the
message object are currently updated.
NEWDAT
3
rh
New Data
0
No update of the message object n since last
flag reset.
1
Message object n has been updated.
NEWDAT is set by hardware after a received CAN
frame has been stored in message object n.
NEWDAT is cleared by hardware when a CAN
transmission of message object n has been started.
NEWDAT should be set by software after the new
transmit data has been stored in message object n to
prevent the automatic reset of TXRQ at the end of an
ongoing transmission.
MSGLST
4
rh
Message Lost
0
No CAN message is lost.
1
A CAN message is lost because NEWDAT has
become set again when it has been already set.
MSGVAL
5
rh
Message Valid
0
Message object n is not valid.
1
Message object n is valid.
Only a valid message object takes part in CAN
transfers.
Field
Bits
Type Description
*