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Chapter 14
FCAN Interface Function
Preliminary User’s Manual U15839EE1V0UM00
Figure 14-25:
Message Configuration Registers 00 to 31 (M_CONF00 to M_CONF31) (2/2)
Notes: 1. The register address is calculated according to the following formula:
effective address = P address offset
2. Mask number of the linked CAN module specified by MA1, MA0 bits.
3. CAN module does not handle a message buffer of this type.
4. A message buffer of this type is only handled if the linked CAN module is set to diagnostic
mode. In this case all messages received on the CAN bus will be stored in this message
buffer, regardless whether they could have been stored in other message buffers as well.
Even the type of the identifier (standard or extended) and the type of the frame (remote or
data frame) are not respected. In normal operation mode the message buffer is not han-
dled.
5. If the message buffer is not assigned to a CAN module, it can be used as temporary buffer
of the application or by the CAN bridge ELISA.
6. CAN module 3 and CAN module 4 are available in the derivatives µPD703129 (A) and
µPD703129 (A1) only.
Remark:
m = 00 to 31
Bit Position
Bit Name
Function
1, 0
MA1, MA0
Assigns the message buffer to a CAN module.
MA2
MA1
MA0
CAN module assignment
0
0
0
Message buffer is not assigned to a CAN
module
Note 5
0
0
1
Message buffer is assigned to CAN module 1.
0
1
0
Message buffer is assigned to CAN module 2
0
1
1
Message buffer is assigned to CAN module 3
Note 6
1
0
0
Message buffer is assigned to CAN module 4
Note 6
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved
Содержание mPD703128
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