D12320VF25V Datasheet, PDF (541/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 13 Smart Card Interface
Bit 6—Block Transfer Mode (BLK): Selects block transfer mode.
Bit 6
BLK
Description
0
Normal smart card interface mode operation
(Initial value)
• Error signal transmission/detection and automatic data retransmission performed
• TXI interrupt generated by TEND flag
• TEND flag set 12.5 etu after start of transmission (11.0 etu in GSM mode)
1
Block transfer mode operation
• Error signal transmission/detection and automatic data retransmission not
performed
• TXI interrupt generated by TDRE flag
• TEND flag set 11.5 etu after start of transmission (11.0 etu in GSM mode)
Note: etu: Elementary time unit (time for transfer of 1 bit)
Bits 3 and 2—Base Clock Pulse 1 and 2 (BCP1, BCP0): These bits specify the number of base
clock periods in a 1-bit transfer interval on the smart card interface.
Bit 3
BCP1
0
1
Bit 2
BCP0
0
1
0
1
Description
32 clock periods
64 clock periods
372 clock periods
256 clock periods
(Initial value)
Bits 5, 4, 1, and 0—Operate in the same way as for the normal SCI. For details, see section
12.2.5, Serial Mode Register (SMR).
Rev.7.00 Feb. 14, 2007 page 507 of 1108
REJ09B0089-0700