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MB90440G Series
25
I
CAN CONTROLLER
The MB90440G series contains three generic CAN controllers (CAN0, CAN1, CAN2) .
The CAN controller has the following features
:
Conforms to CAN Specification Version 2.0 Part A and B
- Supports transmission/reception in standard frame and extended frame formats
Supports transmission of data frames by receiving remote frames
16 transmission/reception message buffers
- 29-bit ID and 8-byte data
- Multi-level message buffer configuration
Provides full-bit comparison, full-bit mask, acceptance register 0/acceptance register 1 for each message
buffer as ID acceptance mask
- Two acceptance mask registers in either standard frame format or extended frame formats
Bit rate programmable from 10 Kbps to 1 Mbps (when input clock is at 16 MHz)
List of Control Registers
(Continued)
Address
Register
Abbreviation
Read/
Write
Initial Value
CAN0
CAN1
CAN2
000070
H
000080
H
00005C
H
Message buffer valid register
BVALR
R/W
00000000
00000000
B
000071
H
000081
H
00005D
H
000072
H
000082
H
00005E
H
Transmit request register
TREQR
R/W
00000000
00000000
B
000073
H
000083
H
00005F
H
000074
H
000084
H
000060
H
Transmit cancel register
TCANR
W
00000000
00000000
B
000075
H
000085
H
000061
H
000076
H
000086
H
000062
H
Transmit complete register
TCR
R/W
00000000
00000000
B
000077
H
000087
H
000063
H
000078
H
000088
H
000064
H
Receive complete register
RCR
R/W
00000000
00000000
B
000079
H
000089
H
000065
H
00007A
H
00008A
H
000066
H
Remote request receiving
register
RRTRR
R/W
00000000
00000000
B
00007B
H
00008B
H
000067
H
00007C
H
00008C
H
000068
H
Receive overrun register
ROVRR
R/W
00000000
00000000
B
00007D
H
00008D
H
000069
H
00007E
H
00008E
H
00006A
H
Receive interrupt enable
register
RIER
R/W
00000000
00000000
B
00007F
H
00008F
H
00006B
H
003B00
H
003D00
H
003F00
H
Control status register
CSR
R/W, R
00---000 0----0-
1
B
003B01
H
003D01
H
003F01
H
003B02
H
003D02
H
003F02
H
Last event indicator register
LEIR
R/W
-------- 000-
0000
B
003B03
H
003D03
H
003F03
H
003B04
H
003D04
H
003F04
H
Receive/transmit error
counter
RTEC
R
00000000
00000000
B
003B05
H
003D05
H
003F05
H