Continuous Transfer Mode - NEC V850ES/KE1+ User Manual

15.4.3 Continuous transfer mode

(1) Usage (receive-only: 8-bit data length)
<1> Set the continuous transfer mode (CSIM0n.AUTOn bit = 1) and the receive-only mode
(CSIM0n.TRMDn bit = 0).
<2> Read the SIRBnL register (start transfer with dummy read).
<3> When the transmission/reception completion interrupt request signal (INTCSI0n) has been generated,
read the SIRBnL register
<4> Repeat step <3> (N − 2) times. (N: Number of transfer data)
Ignore the interrupt triggered by reception of the (N − 1)th data (at this time, the SIRBEnL register can
be read).
<5> Following generation of the last INTCSI0n signal, read the SIRBEnL register and the SIO0nL
Note
register .
Note When transferring N number of data, receive data is loaded by reading the SIRBnL register from the
first data to the (N − 2)th data. The (N − 1)th data is loaded by reading the SIRBEnL register, and the
Nth (last) data is loaded by reading the SIO0nL register (refer to Table 15-1 Use of Each Buffer
Register).
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CHAPTER 15 CLOCKED SERIAL INTERFACE 0 (CSI0)
Note
(reserve next transfer).
User's Manual U16896EJ2V0UD