Allwinner A20 - Page 797

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 797 / 812
6.16.5.10. CAN RECEIVE BUFFER START ADDRESS REGISTER
Offset: 0x24
Register Name:
CAN_RSADDR_REG
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31:6
/
/
/
5:0
R/W
0
RX_BUFF_SADDR
CAN receive buffer start address pointer
These bits are only writable in reset mode.
6.16.5.11. CAN TX/RX MESSAGE BUFFER 0 REGISTER (TRANSFER MODE)
Offset: 0x40
Register Name:
CAN_TXBUF0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31:8
/
/
/
7
R/W
0
EFF
Extend frame flag
1 – Extend frame
0 – Standard frame
6
R/W
0
RTR
Remote Transmit
1 – remote frame
0 – normal frame
5:4
/
/
/
3:0
R/W
0
DL
Date length of message requested to send
6.16.5.12. CAN TX/RX MESSAGE BUFFER 1 REGISTER (TRANSFER MODE)
Offset: 0x44
Register Name:
CAN_TXBUF1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31:8
/
/
/
7:0
R/W
0
ID
ID[28:21]