HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1074

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

Section 30
30.4.5
(1)
Prior to data transmission and reception, the following procedure should be used to initialize the
smart card interface. Initialization is also necessary when switching from transmit mode to receive
mode, and when switching from receive mode to transmit mode. An example of the initialization
process is shown in the flowchart of figure 30.4.
Step (1) to step (7) of figure 30.4 correspond to the following operation.
1. Clear the TE and RE bits in the serial control register (SCSCR) to 0.
2. Clear the error flags PER, ORER, ERS, and WAIT_ER in the serial status register (SCSSR) to
3. Set the parity bit (O/E bit) in the serial mode register (SCSMR).
4. Set the LCB, PB, SMIF, SDIR, and SINV bits in the smart card mode register (SCSCMR).
5. Set the value corresponding to the bit rate to the bit rate register (SCBRR).
6. Set the clock source select bits (CKE1 and CKE0 bits) in the serial control register (SCSCR).
7. After waiting at least 1 etu, set the TIE, RIE, TE, RE, TEIE, and WAIT_IE bits in SCSCR.
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0.
At this time, the TIE, RIE, TE, RE, TEIE, and WAIT_IE bits should be cleared to 0.
If the CKE0 bit is set to 1, a clock signal is output from the SIM_CLK pin.
Except for self-check, the TE bit and RE bit should not be set simultaneously.
Initialization
Data Transmit/Receive Operation
SIM Card Module (SIM)