Datasheet

ESCI Arbiter
MC68HC908QB8 Data Sheet, Rev. 3
Freescale Semiconductor 137
Figure 13-20. Bit Time Measurement with ACLK = 0
Figure 13-21. Bit Time Measurement with ACLK = 1, Scenario A
Figure 13-22. Bit Time Measurement with ACLK = 1, Scenario B
WRITE SCIACTL
COUNTER STARTS,
COUNTER STOPS,
MEASURED TIME
READ RESULT
RXD
WITH $20
ARUN = 1
AFIN = 1
OUT OF SCIADAT
WRITE SCIACTL WITH $30
COUNTER STARTS, ARUN = 1
COUNTER STOPS, AFIN = 1
MEASURED TIME
READ RESULT
RXD
OUT OF SCIADAT
WRITE SCIACTL
COUNTER STARTS,
COUNTER STOPS,
MEASURED TIME
READ RESULT
RXD
OUT OF SCIADAT
AFIN = 1
ARUN = 1
WITH $30