HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 426

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 13 Serial Communication Interface (SCI)
1. Select the communication format in the serial mode register (SMR).
2. Write the value corresponding to the bit rate in the bit rate register (BRR) unless an external
3. Select the clock source in the serial control register (SCR). Leave RIE, TIE, TEIE, MPIE, TE,
4.
Rev. 7.00 Jan 31, 2006 page 400 of 658
REJ09B0272-0700
clock is used.
and RE cleared to 0.
Wait for at least the interval required to transmit or receive one bit, then set TE or RE in the
serial control register (SCR) to 1. Also set RIE, TIE, TEIE, and MPIE. Setting the
corresponding bit of the pin function controller, TE, and RE enables the SCI to use the TxD or
RxD pin.
Figure 13.16 Sample Flowchart for SCI Initialization
Select communication format in SMR
Clear TE and RE bits to 0 in SCR
Set RIE, TIE, TEIE, MPIE, CKE1,
(leaving TE and RE cleared to 0)
Set RIE, TIE, TEIE, and MPIE
Set TE or RE to 1 in SCR;
and CKE0 bits in SCR
1-bit interval elapsed?
Start of initialization
Set value in BRR
End
Yes
Wait
No
(1)
(2)
(3)
(4)