Precautions About Can Module - Renesas M32R/ECU Series User Manual

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13.9 Precautions about CAN Module

• Note for cancelation of transmit and receive CAN remote frame
When aborting remote frame transmission or canceling remote frame receiving, make sure that the RA (Remote
Active) bit is cleared to "0" after writing "H'00" or "H'0F" to the CAN Message Slot Control Register.
(1) When aborting remote frame transmission
Figure 13.9.1 Opertion Flow when Aborting Remote Frame Transmission
(2) When canceling remote frame receiving
Figure 13.9.2 Opertion Flow when Canceling Remote Frame Receiving
13.9 Precautions about CAN Module
Start transmission abort
Write H'00 or H'0F to
CAN message slot
control register
(Note 1)
Read CAN message
slot control register
No
RA (Remote Active)
bit = "0"
Yes
Complete transmission
abort
Note 1: H'00 or H'0F can be used.
Start receiving abort
Write H'00 or H'0F to
CAN message slot
control register
(Note 1)
Read CAN message
slot control register
No
RA (Remote Active)
bit = "0"
Yes
Complete receiving
abort
Note 1: H'00 or H'0F can be used.
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CAN MODULE
32180 Group User's Manual (Rev.1.0)