HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 783

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

21.4.7
(1)
Figure 21.9 shows an example of settings and operation for master mode transmission.
Transmission in Master Mode
Transmit and Receive Procedures
Figure 21.9
Note: * When interrupts due to transmit data underflow are enabled, after setting the no. 6 transmit data, the
10
11
12
No.
1
2
3
4
5
6
7
8
9
TXE bit should be set to 1.
SIRDAR, SICDAR, and SIFCTR
Set the MSSEL bit in SISCR to 1
Set the SCKE bit in SICTR to 1
Transmit SITDR from SIOFTXD
synchronously with SIOFSYNC
Clear the TXE bit in SICTR to 0
Reset the master clock source
Set SIMDR, SISCR, SITDAR,
Set the FSE bit in SICTR to 0
and BPRS=00000 in SISCR
Set the FSE and TXE bits
Start the setting FSE=0,
and baud rate in SISCR
to the TXRST in SISCR
Start SIOFSCK output
Add pulse (0→1→0)
TXE=0 and other bit.
Set BRDV=111
transmit mode?
Change other
in SICTR to 1
TDREQ = 1?
Flow Chart
Set SITDR
Transfer
ended?
Example of Transmit Operation in Master Mode
Start
Yes
Yes
Yes
No
No
No
End
Set operating mode, serial clock,
slot positions for transmit/receive
data, slot position for control data,
and FIFO request threshold value
Set the start for frame synchronous
signal output and enable
transmission
Set transmit data
Set to disable transmission
Synchronize this LSI internal
frame with FSE=0 if restarting
transmit later.
Execute internal initialization
of the bit rate generator
if restarting transmit later.
'No' requires further setting
if transmission is not restarted
(No).
When returning to the same
transmit mode from here,
go back to No.4, FSE setting,
on this flowchart.
Go to "Start" on each flowchart.
Set operation start for baud rate
generator
SIOF Settings
Rev. 3.00 Jan. 18, 2008 Page 721 of 1458
Section 21
Output serial clock
Output frame synchronous
signal and issue transmit
transfer request*
End transmission
Transmit
SIOF Operation
Serial I/O with FIFO (SIOF)
REJ09B0033-0300