FlexCAN
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 691
BIT1_ERR Bit1 Error
This bit indicates when an inconsistency occurs between the transmitted and the received bit in a
message.
0 No such occurrence
1 At least one bit sent as recessive is received as dominant
Note: This bit is not set by a transmitter in case of arbitration field or ACK slot, or in case of a node
sending a passive error flag that detects dominant bits.
BIT0_ERR Bit0 Error
This bit indicates when an inconsistency occurs between the transmitted and the received bit in a
message.
0 No such occurrence
1 At least one bit sent as dominant is received as recessive
ACK_ERR Acknowledge Error
This bit indicates that an Acknowledge Error has been detected by the transmitter node; that is, a
dominant bit has not been detected during the ACK SLOT.
0 No such occurrence
1 An ACK error occurred since last read of this register
CRC_ERR Cyclic Redundancy Check Error
This bit indicates that a CRC Error has been detected by the receiver node; that is, the calculated
CRC is different from the received.
0 No such occurrence
1 A CRC error occurred since last read of this register
FRM_ERR Form Error
This bit indicates that a Form Error has been detected by the receiver node; that is, a fixed-form bit
field contains at least one illegal bit.
0 No such occurrence
1 A Form Error occurred since last read of this register
STF_ERR Stuffing Error
This bit indicates that a Stuffing Error has been detected.
0 No such occurrence.
1 A Stuffing Error occurred since last read of this register
TX_WRN TX Error Counter
This bit indicates when repetitive errors are occurring during message transmission.
0 No such occurrence
1 TX_Err_Counter 96
RX_WRN Rx Error Counter
This bit indicates when repetitive errors are occurring during message reception.
0 No such occurrence
1 Rx_Err_Counter 96
IDLE CAN bus Idle state
This bit indicates when CAN bus is in Idle state.
0 No such occurrence
1 CAN bus is now idle
Table 18-12. Error and Status Register (ESR) field descriptions (continued)
Field Description
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