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Chapter 12 Serial Interface 3
Operation
XII - 39
(19) Judge the ACK bit level.
SC3CTR (x'3FAA')
bp0 : SC3ACKO
(20) Select the transfer bit count.
SC3MD0 (x'3FA8')
bp2-0 : SC3LNG2-0 = 0
(21) Select the start condition.
SC3MD0 (x'3FA8')
bp3 : SC3STE = 0
<The next data transmission is started.>
(22) Serial transmission is started. [ → (17)]
<The transmission is finished.>
<Transaction after IIC communication>
(23) Clear BUSY flag.
SC3CTR (x'3FAA')
bp7 : IICBSY = 0
(19) Confirm the level of the ACK bit, received by the
SC3ACKS flag of the serial 3 control register
(SC3CTR). When SC3ACKO = 0, the transmission
is continued. When SC3ACKO = 1, the reception at
slave may be impossible, finish the communication.
(20) If the transfer bit count is changed, set the
transfer count bit by the SC3LNG2-0 flag of the
serial 3 mode register (SC3MD0).
(21) Set the SC3STE flag of the SC3MD0 register to "0"
to disable start condition.
(22) Set the transmission data to SC3TRB to start the
transmission. [ → (17)]
(23) Clear the IICBSY flag of the serial 3 control
register (SC3CTR) to "0". Then, the stop condition
is automatically generated to finish the
communication.
Note : In the above (5) to (8), (9) to (12), (13) to (14), (15) to (16), (18) to (19) and (20) to (21), settings can
be set at once.
Setup Procedure Description