p87c591vfb NXP Semiconductors, p87c591vfb Datasheet - Page 56

• Manufacturer Part Number: p87c591vfb
• Description: Single-chip 8-bit Microcontroller With Can Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
12.5.18.2 Descriptor Field of the Transmit Buffer
This configuration is chosen to be compatible with the Receive Buffer Layout (see Section 12.5.19.1).
The values marked with “( )” in the Transmit Buffer should be set to the values expected in the Receive Buffer for an easy
comparison, only when using the Self Reception facility, otherwise they are don’t care.
Table 37 Frame Format (FF) and Remote Transmission Request (RTR) bits
2000 Jul 26
FF
RTR
Meaning of the Transmit Buffer Bits:
ID.x
FF
RTR
DLC.x
X
(0)
Single-chip 8-bit microcontroller with CAN controller
ID.28
ID.20
Addr. 112
Addr 113
Addr. 114
FF
7
7
7
BIT
ID.27
ID.19
RTR
6
6
6
Standard Frame Format (SFF)
Identifier bit x
Frame Format
Remote Transmission Request
Data Length Code bit x
don’t care
don’t care, but recommended to be
compatible to Receive Buffer
TX Frame Information
TX Identifier 1
TX Identifier 2
ID.26
ID.18
(0)
5
5
5
1 (EFF)
0 (SFF)
1 (remote)
0 (data)
(RTR)
ID.25
(0)
4
4
4
VALUE
DLC.3
ID.24
(0)
3
3
3
DLC.2
ID.23
(0)
2
2
2
Fig.20 Bit Layout Transmit Buffer.
DLC.1
ID.22
(0)
1
1
1
Extended Frame Format will be transmitted by the CAN controller
Standard Frame Format will be transmitted by the CAN controller
Remote Frame will be transmitted by the CAN controller
Data Frame will be transmitted by the CAN controller
DLC.0
ID.21
(0)
0
0
0
56
ID.28
ID.20
ID.12
Addr. 112
Addr. 113
Addr. 114
Addr. 115
Addr. 116
ID.4
FF
7
7
7
7
7
ID.27
ID.19
ID.11
RTR
ID.3
6
6
6
6
6
Extended Frame Format (EFF)
TX Frame Information
TX Identifier 1
TX Identifier 2
TX Identifier 3
TX Identifier 4
ID.26
ID.18
ID.10
FUNCTION
ID.2
(0)
5
5
5
5
5
ID.25
ID.17
ID.9
ID.1
(0)
4
4
4
4
4
DLC.3
ID.24
ID.16
ID.8
ID.0
3
3
3
3
3
Preliminary Specification
DLC.2
(RTR)
ID.23
ID.15
ID.7
2
2
2
2
2
P8xC591
DLC.1
ID.22
ID.14
ID.6
(0)
1
1
1
1
1
DLC.0
ID.21
ID.13
ID.5
(0)
0
0
0
0
0