HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 457

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

15.4.7
Transmission in Master Mode: Figure 15.9 shows an example of settings and operation for
master mode transmission.
Note: * When interrupts due to transmit data underflow are enabled, after setting the no. 6 transmit data, the
No.
2
4
1
3
5
6
7
8
Transmit and Receive Procedures
TXE bit should be set to 1.
Transmit SITDR from SIOFTXD
synchronously with SIOFSYNC
Set the SCKE bit in SICTR to 1
SIRDAR, SICDAR, and SIFCTR
Clear the TXE bit in SICTR to 0
Set SIMDR, SISCR, SITDAR,
Figure 15.9 Example of Transmit Operation in Master Mode
Set the FSE and TXE bits
Start SIOFSCK output
in SICTR to 1
TDREQ = 1?
Flow Chart
Set SITDR
Transfer
ended?
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 the start for frame synchronous
signal output and enable
transmission
Set operation start for baud rate
generator
Set transmit data
Set to disable transmission
SIOF Settings
Rev. 1.00, 02/04, page 419 of 804
Output frame synchronous
signal and issue transmit
transfer request*
End transmission
Transmit
Output serial clock
SIOF Operation