Renesas R5S72621 User Manual
Section 19 Serial I/O with FIFO
R01UH0134EJ0400 Rev. 4.00
Page 973 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
(4) Reception in Slave Mode
Figure 19.9 shows an example of reception settings and operation when this module is used as a
slave.
slave.
Start
No
Yes
No
Yes
End
No.
1
2
3
4
5
6
Set SIMDR, SISCR, SIRDAR,
and SIFCTR
Set the RXE bit in SICTR to 1
RDREQ = 1?
Reception
ended?
Clear the RXE bit in SICTR to 0
Set operating mode, serial clock,
slot position for receive data,
and FIFO request threshold
value
slot position for receive data,
and FIFO request threshold
value
Flow Chart
Settings of This Module
Operation of This Module
Issue receive transfer request
according to the receive
FIFO threshold value
according to the receive
FIFO threshold value
Reception
End reception
Read receive data
Set to disable reception
Read SIRDR
Store SIOFRXD receive data in SIRDR
synchronously with SIOFSYNC
Set to enable reception
Enable reception when the
frame synchronous signal is
input
frame synchronous signal is
input
Figure 19.9 Example of Receive Operation in Slave Mode