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CHAPTER 14 SERIAL INTERFACE (SIO1)
Preliminary User’s Manual U13420EJ2V0UM00
Figure 14-11. Basic Transmit Mode Flowchart
ADTP0: Automatic data transmit/receive address pointer
ADTI0: Automatic data transmit/receive interval specification register
SIO1:
Serial I/O shift register 1
TRF0:
Bit 3 of automatic data transmit/receive control register (ADTC0)
Start
Write transmit data
in buffer RAM
Set ADTP0 to the value (pointer
value) obtained by subtracting 1
from the number of transmit
data bytes
Set the transmit/receive
operation interval time in ADTI0
Write any data to SIO1
(Start trigger)
Write transmit data from
buffer RAM to SIO1
Transmission operation
Pointer value = 0
No
TRF0 = 0
No
End
Yes
Yes
Decrement pointer value
Software execution
Hardware execution
Software execution
Содержание mPD780065 Series
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