Datasheet

• T3 Bits 23:16 - DB6[7:0]: Data Byte 6
• T3 Bits 15:8 - DB5[7:0]: Data Byte 5
• T3 Bits 7:0 - DB4[7:0]: Data Byte 4
...
• Tn Bits 31:24 - DBm[7:0]: Data Byte m
• Tn Bits 23:16 - DBm-1[7:0]: Data Byte m-1
• Tn Bits 15:8 - DBm-2[7:0]: Data Byte m-2
• Tn Bits 7:0 - DBm-3[7:0]: Data Byte m-3
Note: Depending on the configuration of TXESC, between two and sixteen 32-bit words (Tn = 3 ... 17)
are used for storage of a CAN message’s data field.
39.9.4 Tx Event FIFO Element
Each element stores information about transmitted messages. By reading the Tx Event FIFO the Host
CPU gets this information in the order the messages were transmitted. Status information about the Tx
Event FIFO can be obtained from register TXEFS.
Table 39-10. Tx Event FIFO Element
31 3
0
29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
E0
E
S
I
X
T
D
R
T
R
ID[28:0]
E1 MM[7:0]
ET
[1:0]
F
D
F
B
R
S
DLC[3:0] TXTS[15:0]
• E0 Bit 31 - ESI: Error State Indicator
0 : Transmitting node is error active.
1 : Transmitting node is error passive.
• E0 Bit 30 - XTD: Extended Identifier
0 : 11-bit standard identifier.
1 : 29-bit extended identifier.
• E0 Bit 29 - RTR: Remote Transmission Request
0 : Received frame is a data frame.
1 : Received frame is a remote frame.
• E0 Bits 28:0 - ID[28:0]: Identifier
Standard or extended identifier depending on bit XTD. A standard identifier is stored into ID[28:18].
• E1 Bits 31:24 - MM[7:0]: Message Marker
Copied from Tx Buffer into Tx Event FIFO element for identification of Tx message status.
• E1 Bits 23:22 - ET[1:0]: Event Type
This field defines the event type.
SAM D5x/E5x Family Data Sheet
CAN - Control Area Network
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1306