D12320VF25IV Datasheet, PDF (703/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 15 Smart Card Interface
15.2 Register Descriptions
Registers added with the smart card interface and bits for which the function changes are
described here.
15.2.1 Smart Card Mode Register (SCMR)
Bit
:
7
6
5
4
3
2
1
0
—
—
—
—
SDIR SINV
—
SMIF
Initial value :
1
1
1
1
0
0
1
0
R/W
:—
—
—
—
R/W
R/W
—
R/W
SCMR is an 8-bit readable/writable register that selects the smart card interface function.
SCMR is initialized to H'F2 by a reset and in hardware standby mode. In software standby mode
and module stop mode it retains its previous state.
Bits 7 to 4—Reserved: These bits cannot be modified and are always read as 1.
Bit 3—Smart Card Data Transfer Direction (SDIR): Selects the serial/parallel conversion
format.
Bit 3
SDIR
0
1
Description
TDR contents are transmitted LSB-first
Receive data is stored in RDR LSB-first
TDR contents are transmitted MSB-first
Receive data is stored in RDR MSB-first
(Initial value)
Rev.6.00 Sep. 27, 2007 Page 671 of 1268
REJ09B0220-0600