Single Transfer Mode - NEC V850ES/KE1+ User Manual

CHAPTER 15 CLOCKED SERIAL INTERFACE 0 (CSI0)

15.4.2 Single transfer mode

(1) Usage
In the receive-only mode (CSIM0n.TRMDn bit = 0), communication is started by reading the SIRBn/SIRBnL
register.
In the transmission/reception mode (TRMDn bit = 1), communication is started by writing to the
SOTBn/SOTBnL register.
In the slave mode, the operation must be enabled beforehand (CSIM0n.CSI0En bit = 1).
When communication is started, the value of the CSIM0n.CSOTn bit becomes 1 (transmission execution
status).
Upon communication completion, the transmission/reception completion interrupt request signal (INTCSI0n)
is generated, and the CSOTn bit is cleared (0). The next data communication request is then waited for.
Caution When the CSOTn bit = 1, do not manipulate the CSI0n register.
Remark n = 0, 1
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