MCP2518FD datasheet(44/96 Pages) MICROCHIP

44 / 96 page

MCP2518FD

DS20006027A-page 44

 2019 Microchip Technology Inc.

CiBDIAG1 – BUS DIAGNOSTICS REGISTER 1

R/W-0

U-0

R/W-0

DLCMM

ESI

DCRCERR

DSTUFERR DFORMERR

—

DBIT1ERR

DBIT0ERR

bit 31

bit 24

R/W-0

U-0

R/W-0

TXBOERR

—

NCRCERR

NSTUFERR NFORMERR

NACKERR

NBIT1ERR

NBIT0ERR

bit 23

bit 16

R/W-0

EFMSGCNT<15:8>

bit 15

bit 8

R/W-0

EFMSGCNT<7:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31

DLCMM: DLC Mismatch bit

During a transmission or reception, the specified DLC is larger than the PLSIZE of the FIFO element.

bit 30

ESI: ESI flag of a received CAN FD message was set.

bit 29

DCRCERR: Same as for nominal bit rate (see below).

bit 28

DSTUFERR: Same as for nominal bit rate (see below).

bit 27

DFORMERR: Same as for nominal bit rate (see below).

bit 26

Unimplemented: Read as ‘0’

bit 25

DBIT1ERR: Same as for nominal bit rate (see below).

bit 24

DBIT0ERR: Same as for nominal bit rate (see below).

bit 23

TXBOERR: Device went to bus-off (and auto-recovered).

bit 22

Unimplemented: Read as ‘0’

bit 21

NCRCERR: The CRC check sum of a received message was incorrect. The CRC of an incoming

message does not match with the CRC calculated from the received data.

bit 20

NSTUFERR: More than 5 equal bits in a sequence have occurred in a part of a received message

where this is not allowed.

bit 19

NFORMERR: A fixed format part of a received frame has the wrong format.

bit 18

NACKERR: Transmitted message was not acknowledged.

bit 17

NBIT1ERR: During the transmission of a message (with the exception of the arbitration field), the

device wanted to send a recessive level (bit of logical value ‘1’), but the monitored bus value was

dominant.

bit 16

NBIT0ERR: During the transmission of a message (or acknowledge bit, or active error flag, or overload

flag), the device wanted to send a dominant level (data or identifier bit logical value ‘0’), but the

monitored bus value was recessive.

bit 15-0

EFMSGCNT<15:0>: Error Free Message Counter bits

MCP2518FD Datasheet(PDF) 44 Page - Microchip Technology

MCP2518FD Datasheet(HTML) 44 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

Datasheet Download

Link URL