Register Descriptions; Smart Card Mode Register (Scmr) - Renesas F-ZTAT H8 Series Hardware Manual

Section 14 Smart Card Interface
14.2

Register Descriptions

This section describes the new or modified registers and bit functions in the smart card interface.
14.2.1

Smart Card Mode Register (SCMR)

SCMR is an 8-bit readable/writable register that selects smart card interface functions.
Bit 7
—
Initial value 1
Read/Write —
SCMR is initialized to H'F2 by a reset and in standby mode.
Bits 7 to 4—Reserved: Read-only bits, always read as 1.
Bit 3—Smart Card Data Transfer Direction (SDIR): Selects the serial/parallel conversion
format.
Bit 3: SDIR Description
0 TDR contents are transmitted LSB-first
Received data is stored LSB-first in RDR
1 TDR contents are transmitted MSB-first
Received data is stored MSB-first in RDR
Rev. 7.00 Sep 21, 2005 page 512 of 878
REJ09B0259-0700
6 5
— — —
1 1
— — —
Reserved bits
Reserved bits
4 3 2
SDIR SINV
1 0 0
R/W R/W
Smart card data invert
Inverts data logic levels
Smart card data transfer direction
Selects the serial/parallel conversion format
1 0
— SMIF
1 0
— R/W
Smart card interface
mode select
Enables or disables
the smart card
interface function
(Initial value)