Fujitsu FR81S User Manual
CHAPTER 41: CAN
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: CAN
FUJITSU SEMICONDUCTOR CONFIDENTIAL
47
4.5.1. CAN Transmission Request Registers : TREQR1 to
TREQR4
The bit configuration of the CAN transmission request registers is shown.
Displays the TxRqst bit of all message objects. It is possible to check which message objects transmission
request is pending by reading the TxRqst bits.
CAN Transmission Request Register 4 (upper byte): Address Base + 84
H
(Access: Byte, Half-word, Word)
bit15
bit14
bit13
bit12
bit11
bit10
bit9
bit8
TxRqst64 to TxRqst57
Initial value
0
0
0
0
0
0
0
0
Attribute R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
CAN Transmission Request Register 4 (lower byte): Address Base + 85
H
(Access: Byte, Half-word, Word)
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
TxRqst56 to TxRqst49
Initial value
0
0
0
0
0
0
0
0
Attribute R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
CAN Transmission Request Register 3 (upper byte): Address Base + 86
H
(Access: Byte, Half-word, Word)
bit15
bit14
bit13
bit12
bit11
bit10
bit9
bit8
TxRqst48 to TxRqst41
Initial value
0
0
0
0
0
0
0
0
Attribute R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
CAN Transmission Request Register 3 (lower byte): Address Base + 87
H
(Access: Byte, Half-word, Word)
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
TxRqst40 to TxRqst33
Initial value
0
0
0
0
0
0
0
0
Attribute R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
R,WX
MB91520 Series
MN705-00010-1v0-E
1740