r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1172

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

22. Serial I/O with FIFO (SIOF)
(4)
Figure 22.12 shows an example of settings and operation for slave mode reception.
Rev.1.00 Jan. 10, 2008 Page 1142 of 1658
REJ09B0261-0100
Reception in Slave Mode
No.
1
2
3
4
5
6
Store SIOF_RXD receive data in SIRDR
synchronously with SIOF_SYNC
Clear the RXE bit in SICTR to 0
Set SIMDR, SISCR, SITDAR,
Set the RXE bit in SICTR to 1
SIRDAR, SICDAR, SITCR,
Figure 22.12 Example of Receive Operation in Slave Mode
Transfer ended?
Read SIRDR
and SIFCTR
RDREQ = 1
Flowchart
Start
End
Yes
Yes
No
No
Set operating mode, serial clock, slot
positions for transmit/receive data, slot
position for control data, and FIFO
request threshold value
Set to enable reception
Read receive data
Set to disable reception
SIOF Settings
Enable reception when
the frame synchronous
signal is input
Issue receive transfer
request according to the
receive FIFO threshold
value
Receive
End reception
SIOF Operation