NEC UPD703116 User Manual page 500

(2) Repeat transfer mode
(a) Usage (receive-only)
<1> Set the repeat transfer mode (AUTO 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
<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 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.
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CHAPTER 10 SERIAL INTERFACE FUNCTION
Note
(reserve next transfer).
Note
.
User's Manual U14492EJ5V0UD