CHAPTER 11 SERIAL INTERFACE FUNCTION
User’s Manual U15109EJ3V0UD
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(2) Repeat transfer mode
(a) Usage (receive-only)
<1> Set the repeat transfer mode (AUTOn bit of CSIMn register = 1) and the receive-only mode (TRMDn
bit of CSIMn register = 0).
<2> Read SIRBn register (start transfer with dummy read).
<3> Wait for transmission/reception completion interrupt request (INTCSIn).
<4> When the transmission/reception completion interrupt request (INTCSIn) has been set (1), read the
SIRBn register
Note
(reserve next transfer).
<5> Repeat steps <3> and <4> (N
−
2) times. (N: Number of transfer data)
<6> Following output of the last transmission/reception completion interrupt request (INTCSIn), read the
SIRBEn register and the SIOn register
Note
.
Note
When transferring N number of data, receive data is loaded by reading the SIRBn register
from the first data to the (N
−
2)th data. The (N
−
1)th data is loaded by reading the SIRBEn
register, and the Nth (last) data is loaded by reading the SIOn register.