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CHAPTER 23 CAN CONTROLLER
23.6.7
IDE register (IDER)
This register stores the frame format used by the message buffers (x) during
transmission/reception.
■ IDE Register (IDER)
[bit15 to bit0] IDE15 to IDE0:
"0": The standard frame format (ID11 bit) is used for the message buffer (x).
"1": The extended frame format (ID29 bit) is used for the message buffer (x).
Notes:
• This register should be set when the message buffer (x) is invalid (BVALx of the message buffer
valid register (BVALR) = 0). Setting when the buffer is valid (BVALx = 1) may cause unnecessary
received messages to be stored.
• To invalidate the message buffer (by setting the BVALR: BVAL bit to "0") while the CAN controller
is operating for CAN communication (the read value of the CSR: HALT bit is "0" and the CAN
controller is operating for CAN bus communication to enable transmission and reception), follow
the procedure in Section "23.16 Precautions when Using CAN Controller".
480
Figure 23.6-10 Configuration of the IDE Register (IDER)
Address:
bit
15
14
CAN0: 003709
H
IDE15 IDE14 IDE13 IDE12 IDE11 IDE10 IDE9 IDE8
CAN1: 003909
H
CAN2: 003B09
H
CAN3: 003D09
R/W R/W R/W R/W
H
CAN4: 003F09
H
Address:
bit
7
6
CAN0: 003708
H
IDE7 IDE6 IDE5 IDE4 IDE3 IDE2 IDE1 IDE0
CAN1: 003908
H
CAN2: 003B08
H
R/W R/W R/W R/W
CAN3: 003D08
H
CAN4: 003F08
H
13
12
11
10
9
8
R/W
R/W
R/W R/W
5
4
3
2
1
0
R/W
R/W
R/W R/W
IDERn(upper)
Initial value
X X X X X X X X
B
IDERn (lower)
Initial value
X X X X X X X X
B
n = 0, 1, 2, 3, 4
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