COBHAM GR740 User Manual

GR740-UM-DS, Nov 2017, Version 1.7 281 www.cobham.com/gaisler
GR740
17.10 Memory mapping
The CAN message is represented in memory as shown in table 360.
Values: Levels according to CAN standard: 1b is recessive,
0b is dominant
Legend: Naming and number in according to CAN standard
IDE Identifier Extension: 1b for Extended Format,
0b for Standard Format
RTR Remote Transmission Request: 1b for Remote Frame,
0b for Data Frame
bID Base Identifier
eID Extended Identifier
DLC Data Length Code, according to CAN standard:
0000b 0 bytes 0001b 1 byte
0010b 2 bytes 0011b 3 bytes
0100b 4 bytes 0101b 5 bytes
0110b 6 bytes 0111b 7 bytes
1000b 8 bytes OTHERS illegal
TxErrCntr Transmission Error Counter
RxErrCntr Reception Error Counter
AHBErr AHB interface blocked due to AHB Error when 1b
OR Reception Over run when 1b
OFF Bus Off mode when 1b
PASS Error Passive mode when 1b
Byte 00 to 07 Transmit/Receive data, Byte 00 first Byte 07 last
Table 360.CAN message representation in memory.
AHB addr
0x0 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IDE RT
R
-bID eID
1514131211109876543210
eID
0x4 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DLC ----TxErrCntr
1514131211109876543210
RxErrCntr ----Ahb
Err
OR Off Pass
0x8 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Byte 0 (first transmitted) Byte 1
1514131211109876543210
Byte 2 Byte 3
0xC 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Byte 4 Byte 5
1514131211109876543210
Byte 6 Byte 7 (last transmitted)

COBHAM GR740 Specifications

General

Brand	COBHAM
Model	GR740
Category	Computer Hardware
Language	English