RL78/D1A User's Manual: Hardware - Renesas

Under development
Preliminary document
Specifications in this document are tentative and subject to change.
RL78/D1A CHAPTER 14 CAN CONTROLLER
(5) CAN global automatic block transmission delay setting register (C0GMABTD, C1GMABTD)
The C0GMABTD, C1GMABTD register is used to set the interval at which the data of the message buffer
assigned to ABT is to be transmitted in the normal operation mode with ABT.
Figure 14-29. Format of CAN Global Automatic Block Transmission Delay Setting Register
(C0GMABTD, C1GMABTD)
Address: F05C8H (C0GMABTD), F0348H (C1GMABTD) After reset: 00H R/W
C0GMABTD,
C1GMABTD
7 6 5 4 3 2 1 0
0 0 0 0 ABTD3 ABTD2 ABTD1 ABTD0
ABTD3 ABTD2 ABTD1 ABTD0 Data frame interval during automatic block transmission
(unit: Data bit time (DBT))
0 0 0 0 0 DBT (default value)
0 0 0 1 2 5 DBT
0 0 1 0 2 6 DBT
0 0 1 1 2 7 DBT
0 1 0 0 2 8 DBT
0 1 0 1 2 9 DBT
0 1 1 0 2 10 DBT
0 1 1 1 2 11 DBT
1 0 0 0 2 12 DBT
Other than above Setting prohibited
Cautions 1. Do not change the contents of the C0GMABTD, C1GMABTD register while the
ABTTRG bit is set to 1.
2. The timing at which the ABT message is actually transmitted onto the CAN
bus differs depending on the status of transmission from the other station or
how a request to transmit a message other than an ABT message (message
buffers 8 to 15) is made.
R01UH0317EJ0004 Rev. 0.04 849
Feb. 22, 2013