ST72561AR7-Auto datasheet(245/324 Pages) STMICROELECTRONICS

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ST72561-Auto

beCAN controller (beCAN)

Doc ID 12370 Rev 8

245/324

Transmit Error Counter Register (TECR)

Read only

Reset value: 0000 0000 (00h)

TEC[7:0] is the least significant byte of the 9-bit transmit error counter implementing part of

the fault confinement mechanism of the CAN protocol.

Receive Error Counter Register (RECR)

Page: 00h — read only

Reset value: 0000 0000 (00h)

REC[7:0] is the receive error counter implementing part of the fault confinement mechanism

of the CAN protocol. In case of an error during reception, this counter is incremented by 1 or

by 8 depending on the error condition as defined by the CAN standard. After every

successful reception the counter is decremented by 1 or reset to 120 if its value was higher

than 128. When the counter value exceeds 127, the CAN controller enters the error passive

state.

CAN diagnosis register (CDGR)

Read/ write

Reset value: 0000 1100 (0Ch)

Note:

All bits of this register are set and cleared by software.

Bit 3 = RX CAN Rx Signal

Read

Monitors the actual value of the CAN_RX Pin.

Bit 2 = SAMP Last Sample Point

Read

The value of the last sample point.

Bit 1 = SILM Silent Mode

Read/Set/Clear

0: normal operation

1: silent mode

TEC7

TEC6

TEC5

TEC4

TEC3

TEC2

TEC1

TEC0

REC7

REC6

REC5

REC4

REC3

REC2

REC1

REC0

SAMP

SILM

LBKM

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