Renesas RL78/G1P Hardware User Manual page 401

RL78/G1P
Figure 11-61. Flowchart of Slave Reception (in Single-Reception Mode)
No
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Starting CSI communication
SAU default setting
Ready for reception
Enables interrupt
Wait for receive completes
Transfer end interrupt
Reading receive data to
SIOp (=SDRmn[7:0])
RETI
Reception completed?
Yes
Disable interrupt (MASK)
Write STmn bit to 1
End of communication
CHAPTER 11 SERIAL ARRAY UNIT
For the initial setting, see Figure 11-57.
(Select transfer end interrupt only)
Clear storage area setting and the number of receive data
(Storage area, Reception data pointer, Number of communication data and
Communication end flag are optionally set on the internal RAM by the software)
Clear interrupt request flag (XXIF), reset interrupt mask (XXMK) and set
interrupt enable (EI).
Start communication when master start providing
the clock
When transmit end, interrupt is generated
Read receive data then writes to storage area, and counts
up the number of receive data.
Update receive data pointer.
Check completion of number of receive data
382