TC1796
Peripheral Units (Vol. 2 of 2)
Controller Area Network (MultiCAN) Controller
User’s Manual 22-134 V2.0, 2007-07
MultiCAN, V2.0
TCEMSGNR [23:16] rw TCE Message Number
This bit field determines the number of the message
object to be transmitted when the next time mark is
reached. The object will be transferred only if it is
tagged valid for transmission. With this scheduler
instruction, the number of the message object is
defined directly, without taking into account to which
CAN node it is currently assigned. Even if it is
assigned to another CAN node, the selected
message object will be transmitted.
If the CAN message transmit acceptance filtering
delivers an object number to be transmitted, it is
overruled by a valid transmit control entry according
to ALTMSG.
If the message object delivered by the transmit
control entry is not valid for transmission, no
transmission will be started.
If the implementation of the CAN controller supports
fewer than 256 message objects, higher values for
MSGNR than the number of actually supported
message objects will be treated with a modulo
operation (e.g. if 128 objects are supported, the
value of MSGNR = 135 is equal to MSGNR = 7).
TREN 24 rw Transmission Enable
This bit enables transmission of a message object in
the next time window due to the TTCAN transmit
trigger.
0
B
Neither a TTCAN transmit trigger nor the
message object transmit acceptance will lead
to a transmission of a message object in the
next time window.
1
B
If a TTCAN transmit trigger occurs or the
message object transmit acceptance filtering
delivers a valid message object, the
transmission of a message object in the next
time window is enabled.
Field Bits Type Description
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