Rainbow-electronics T89C51CC02 Uživatelský manuál stáhnout pdf (Strana 79)

Rev.A - May 17, 2001 79

Preliminary

T89C51CC02

15.10. CAN Autobaud and Listening mode

To activate the Autobaud feature, the AUTOBAUD bit in the CANGCON register is set. In this mode, the CAN

controller is only listening to the line without acknowledging the received messages. It cannot send any message.

The error flags are updated. The bit timing can be adjusted until no error occurs (good configuration find).

In this mode, the error counters are frozen.

To go back to the standard mode, the AUTOBAUD bit must be cleared by the software.

Figure 64. Autobaud Mode

TxDC

RxDC’

AUTOBAUD

CANGCON.3

RxDC

TxDC’

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 136 137

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Rainbow-electronics T89C51CC02 Uživatelský manuál Strana 79