HD64F3039F18 Datasheet, PDF (418/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 12 Smart Card Interface
12.2 Register Descriptions
Registers added with the Smart Card interface and bits for which the function changes are
described here.
12.2.1 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
Read/Write
—
—
—
—
R/W R/W
—
R/W
Reserved bits
Smart card interface
mode select
Enables or disables
the smart card
interface function
Smart card data invert
Inverts data logic levels
Smart card data transfer direction
Selects the serial/parallel conversion format
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 standby mode.
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.3.00 Mar. 26, 2007 Page 394 of 682
REJ09B0353-0300