SH7730 Datasheet, PDF (699/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

Section 21 Serial I/O with FIFO (SIOF)
(3) Transmission in Slave Mode
Figure 21.11 shows an example of settings and operation for slave mode transmission.
No.
Flow Chart
Start
1
Set SIMDR, SISCR, SITDAR,
SIRDAR, SICDAR, and SIFCTR
2
Set the TXE bit in SICTR to 1
3
No
TDREQ = 1?
Yes
4
Set SITDR
SIOF Settings
SIOF Operation
Set operating mode, serial clock,
slot positions for transmit/receive
data, slot position for control data,
and FIFO request threshold value
Enable transmission
Issue transmit transfer request
to enable transmission when
frame synchronization signal is
input
Set transmit data
5
Transmit SITDR from SIOFTXD
synchronously with SIOFSYNC
Transmit
Transfer
No
ended?
Yes
6
Clear the TXE bit in SICTR to 0
End
Disable transmission
End transmission
Figure 21.11 Example of Transmit Operation in Slave Mode
Rev. 1.00 Sep. 19, 2007 Page 651 of 1136
REJ09B0359-0100