MCP2515-I Datasheet, PDF (48/92 Pages) Microchip Technology – Stand-Alone CAN Controller with SPI Interface

MCP2515
FIGURE 6-1:
ERROR MODES STATE DIAGRAM
RESET
REC < 127 or
TEC < 127
Error-Passive
Error-Active
REC > 127 or
TEC > 127
128 occurrences of
11 consecutive
“recessive” bits
TEC > 255
Bus-Off
REGISTER 6-1: TEC – TRANSMIT ERROR COUNTER
(ADDRESS: 1Ch)
R-0
TEC7
bit 7
R-0
TEC6
R-0
TEC5
R-0
TEC4
R-0
TEC3
R-0
TEC2
R-0
TEC1
R-0
TEC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
TEC<7:0>: Transmit Error Count bits
REGISTER 6-2: REC – RECEIVER ERROR COUNTER
(ADDRESS: 1Dh)
R-0
REC7
bit 7
R-0
REC6
R-0
REC5
R-0
REC4
R-0
REC3
R-0
REC2
R-0
REC1
R-0
REC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
REC<7:0>: Receive Error Count bits
DS21801G-page 48
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