HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 716

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 15 Smart Card Interface
15.3.6
Initialization: Before transmitting or receiving data, initialize the SCI as described below.
Initialization is also necessary when switching from transmit mode to receive mode, or vice versa.
[1] Clear the TE and RE bits in SCR to 0.
[2] Clear the error flags ERS, PER, and ORER in SSR to 0.
[3] Set the GM, BLK, O/E, BCP1, BCP0, CKS1, and CKS0 bits in SMR, and set the PE bit to 1.
[4] Set the SMIF, SDIR, and SINV bits in SCMR.
[5] Set the value corresponding to the bit rate in BRR.
[6] Set the CKE1 and CKE0 bits in SCR. Clear the TIE, RIE, TE, RE, MPIE, and TEIE bits to 0.
[7] Wait at least one bit interval, then set the TIE, RIE, TE, and RE bits in SCR. Do not set the TE
Rev.6.00 Sep. 27, 2007 Page 686 of 1268
REJ09B0220-0600
When the SMIF bit is set to 1, the TxD and RxD pins are both switched from ports to SCI pins,
and are placed in the high-impedance state.
If the CKE0 bit is set to 1, the clock is output from the SCK pin.
bit and RE bit at the same time, except for self-diagnosis.
Data Transfer Operations