MC68HC908EY16 Datasheet, PDF (153/278 Pages) Motorola, Inc – Microcontrollers

ESCI Arbiter
another bus is driving the bus dominant) ALOST is set. As long as ALOST is set, the TxD pin is forced
to 1, resulting in a seized transmission.
If SCI_TxD is sensed logic 0 without having sensed a logic 0 before on RxD, the counter will be reset,
arbitration operation will be restarted after the next rising edge of SCI_TxD.
MEASURED TIME
RXD
Figure 13-20. Bit Time Measurement with ACLK = 0
MEASURED TIME
RXD
Figure 13-21. Bit Time Measurement with ACLK = 1, Scenario A
MEASURED TIME
RXD
Figure 13-22. Bit Time Measurement with ACLK = 1, Scenario B
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
Freescale Semiconductor
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