SH7619 Datasheet, PDF (523/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 16 Serial I/O with FIFO (SIOF)
Transmission in Slave Mode: Figure 16.11 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
5
Transmit SITDR from SIOFTXD
synchronously with SIOFSYNC
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
Set to enable transmission
Issue transmit transfer request
to enable transmission when
frame synchronous signal is
input
Set transmit data
Transmit
Transfer
No
ended?
Yes
6
Clear the TXE bit in SICTR to 0
End
Set to disable transmission
End transmission
Figure 16.11 Example of Transmit Operation in Slave Mode
Rev. 5.00 Mar. 15, 2007 Page 485 of 794
REJ09B0237-0500