Renesas RL78/G1P Hardware User Manual page 450

RL78/G1P
11.6.5 Procedure for processing errors that occurred during slave select input function communication
The procedure for processing errors that occurred during slave select input function communication is described in
Figure 11-99.
Software Manipulation
Reads serial data register mn (SDRmn).
Reads serial status register mn
(SSRmn).
Writes 1 to serial flag clear trigger
register mn (SIRmn).
Remark m: Unit number (m = 0), n: Channel number (n = 0)
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Figure 11-99. Processing Procedure in Case of Overrun Error
The BFFmn bit of the SSRmn register is
set to 0 and channel n is enabled to
receive data.
Error flag is cleared.
CHAPTER 11 SERIAL ARRAY UNIT
Hardware Status Remark
This is to prevent an overrun error if the
next reception is completed during error
processing.
Error type is identified and the read
value is used to clear error flag.
Error can be cleared only during
reading, by writing the value read from
the SSRmn register to the SIRmn
register without modification.
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