MCP2517FD datasheet(65/98 Pages) MICROCHIP

65 / 98 page

 2017-2018 Microchip Technology Inc.

Draft

DS20005688B-page 65

MCP2517FD

TABLE 3-6:

RECEIVE MESSAGE OBJECT

Word

Bit

31/23/15/7

Bit

30/22/14/6

Bit

29/21/13/5

Bit

28/20/12/4

Bit

27/19/11/3

Bit

26/18/10/2

Bit

25/17/9/1

Bit

24/16/8/0

31:24

-—

SID11

EID<17:6>

23:16

EID<12:5>

15:8

EID<4:0>

SID<10:8>

7:0

SID<7:0>

31:24

-—

23:16

-—

15:8

FILHIT<4:0>

-—

ESI

7:0

FDF

BRS

RTR

IDE

DLC<3:0>

R2 (2)

31:24

RXMSGTS<31:24>

23:16

RXMSGTS<23:16>

15:8

RXMSGTS<15:8>

7:0

RXMSGTS<7:0>

R3 (1)

31:24

Receive Data Byte 3

23:16

Receive Data Byte 2

15:8

Receive Data Byte 1

7:0

Receive Data Byte 0

31:24

Receive Data Byte 7

23:16

Receive Data Byte 6

15:8

Receive Data Byte 5

7:0

Receive Data Byte 4

31:24

Receive Data Byte n

23:16

Receive Data Byte n-1

15:8

Receive Data Byte n-2

7:0

Receive Data Byte n-3

bit R0.31-30 Unimplemented: Read as ‘x’

bit R0.29

SID11:

In FD mode the standard ID can be extended to 12 bit using r1

bit R0.28-11 EID<17:0>: Extended Identifier

bit R0.10-0

SID<10:0>:

Standard Identifier

bit R1.31-16 Unimplemented: Read as ‘x’

bit R1.15-11 FILTHIT<4:0>: Filter Hit, number of filter that matched

bit R1.10-9

Unimplemented:

Read as ‘x’

bit R1.8

ESI:

Error Status Indicator

1 = Transmitting node is error passive

0 = Transmitting node is error active

bit R1.7

FDF:

FD Frame; distinguishes between CAN and CAN FD formats

bit R1.6

BRS:

Bit Rate Switch; indicates if data bit rate was switched

bit R1.5

RTR:

Remote Transmission Request; not used in CAN FD

bit R1.4

IDE:

Identifier Extension Flag; distinguishes between base and extended format

bit R1.3-0

DLC<3:0>:

Data Length Code

bit R2.31-0

RXMSGTS<31:0>:

Receive Message Time Stamp

Note 1:

RXMOBJ: Data Bytes 0-n: payload size is configured individually in the FIFO control register (CiFIFOCONm.PLSIZE<2:0>).

R2 (RXMSGTS) only exits in objects where CiFIFOCONm.RXTSEN is set.

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