CMS32L051 User Manual |Chapter 14 Serial interface IICA
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(2) When the communication reservation function is disabled (bit0 (IICRSVn) of IICA flag register n
(IICFn) = 1)
During bus communication, if bit1(STTn) of IICA control register n0 (IICCTLn0) is set to 1 in the state of
not participating in this communication, this request is rejected without generating a start condition. At this
time, do not join the bus includes the following two states:
When the arbitration result is neither a master nor a slave
Does not run as a slave device after receiving the extension code (bit6 (LRELn) of the IICCTLn0
register is set to 1 without returning a reply, and the bus is released after exiting communication).
The STCFn (bit 7 of the IICFn register) can be used to confirm whether a start condition has been
generated or a request has been rejected. Since it takes 5 f
MCK
clocks from the time the STTn bit is "1" to the
time the STCFn bit is set to "1", this time must be ensured by software.
Remark n=0
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