HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 504

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

Rev. 1.00, 02/04, page 466 of 804
Figure 16.2 shows a sample SCIF initialization flowchart.
Clear the C/A bit in SCSMR to 0, and
set the transmit/receive format
Set RTRG1, RTRG0, TTRG1,
Set TE and RE bits in SCSCR
to 1, and set RIE and TIE bits
Set TFRST and RFRST bits
and TTRG0 bits in SCFCR.
Set CKE1 and CKE0 bits
(leaving TE and RE bits
Clear TE and RE bits
Set value in SCBRR
1-bit interval elapsed?
Clear TFRST and
in SCSCR to B'00
RFRST bits to 0
in SCSCR to 0
in SCFCR to 1
Initialization
cleared to 0)
Figure 16.2 Sample SCIF Initialization Flowchart
End
Yes
Wait
No
1
2
3
4
1.
2.
3.
4.
Set the clock selection in SCSCR.
Be sure to clear bits RIE, TIE, TE, and RE to 0.
Set the transmit and receive format in SCSMR.
Write a value corresponding to the bit rate into
SCBRR. (Not necessary if an external clock is
used.)
Wait at least one bit interval, then set the TE bit
and RE bits in SCSCR to 1. Also set the RIE
and TIE bits.
Setting the TE and RE bits enables the TxD
and RxD pins to be used. When transmitting,
the TxD pin will go to the mark state; when
receiving, the RxD pin will go to the idle state.