SH7720 Datasheet, PDF (1071/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 30 SIM Card Module (SIM)
Table 30.2 Register Settings for Smart Card Interface
Register
SCSMR
SCBRR
SCSCR
SCTDR
SCSSR
SCRDR
SCSCMR
SCSC2R
SCWAIT
SCGRD
SCSMPL
Bit
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3
Bit 2 Bit 1
0
0
PE
O/E 0
0
0
0
0
0
0
0
BRR2 BRR1
TIE
RIE
TE
RE
WAIT_IE TEIE CKE1
SCTD7 SCTD6 SCTD5 SCTD4 SCTD3 SCTD2 SCTD1
TDRE RDRF ORER ERS PER
TEND WAIT_ER
SCRD7 SCRD6 SCRD5 SCRD4 SCRD3 SCRD2 SCRD1
0
LCB PB
0
SDIR
SINV RST
EIO 0
0
0
0
0
0
SCWAIT15 to SCWAIT0
SCGRD7 to SCGRD0
SCSMPL10 to SCSMPL0, bits 11 to 15 are 0
Bit 0
0
BRR0
CKE0
SCTD0
0
SCRD0
1
0
• Serial mode register (SCSMR) setting
When the IC card is set for the direct convention, the O/E bit is cleared to 0; for the inverse
convention, it is set to 1.
• Bit rate register (SCBRR) setting
Sets the bit rate. For the method of computing settings, refer to section 30.4.4, Clocks.
• Serial control register (SCSCR) settings
Each interrupt can be enabled and disabled using the TIE, RIE, TEIE, and WAIT_IE bits.
By setting either the TE or RE bit to 1, transmission or reception is selected.
The CKE1 and CKE0 bits are used to select the clock output state. For details, refer to section
30.4.4, Clocks.
• Smart card mode register (SCSCMR) settings
When the IC card is set for the direct convention, both the SDIR and SINV bits are cleared to
0; for the inverse convention, both are set to 1. The SMIF bit is always set to 1.
Figure 30.3 below shows the register settings and waveform examples at the start character for
two types of IC cards (a direct-convention type and an inverse-convention type).
For the direct-convention type, the logical level 1 is assigned to the Z state, and the logical
level 0 to the A state, and transmission and reception are performed in LSB-first. The data of
the above start character is then H'3B. Even parity is used according to the smart card
specification, and so the parity bit is 1.
Rev. 3.00 Jan. 18, 2008 Page 1009 of 1458
REJ09B0033-0300