Fujitsu MB90390 Series Hardware Manual page 497

■ Control Status Register (CSR) (Upper)
Figure 23.6-2 Configuration of the Control Status Register (Upper Byte)
Address:
bit
CAN0: 003701
H
CAN1: 003901
H
CAN2: 003B01
H
CAN3: 003D01
H
CAN4: 003F01
H
R/W : Readable and writable
R : Read only
X : Undefined value
- : Undefined
: Initial value
15 14 13 12 11 10
- - -
R R - - - R/W
CSR0/CSR1/CSR2/CSR3/CSR4 (upper
9 8
Initial value
0 0 X X X 0 0 0
B
R R
bit 9 bit 8
NS1 NS0
0 0
0 1
1 0
1 1
bit 10
NT
Node status transition flag bit
0 No change
1 Status changed
bit 14
RS
0 Message not being received
1 Message being received
bit 15
TS
0 Message not being transmitted
1 Message being transmitted
CHAPTER 23 CAN CONTROLLER
Node Status bit
Error active
Warning (error active)
Error passive
Bus off
Receive status bit
T ransmit status bit
)
bit
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