Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 3.00 Mar 17, 2006 page 678 of 926
REJ09B0283-0300
15.3.8 Smart Card Mode Register (SCMR)
SCMR selects Smart Card interface mode and its format.
Bit Bit Name Initial Value R/W Description
7
to
4
— All 1 — Reserved
These bits are always read as 1.
3 SDIR 0 R/W Smart Card Data Transfer Direction
Selects the serial/parallel conversion format.
0: LSB-first in transfer
1: MSB-first in transfer
The bit setting is valid only when the transfer data
format is 8 bits. For 7-bit data, LSB-first is fixed.
2 SINV 0 R/W Smart Card Data Invert
Specifies inversion of the data logic level. The
SINV bit does not affect the logic level of the
parity bit. To invert the parity bit, invert the O/E bit
in SMR.
0: TDR contents are transmitted as they are.
Receive data is stored as it is in RDR.
1: TDR contents are inverted before being
transmitted. Receive data is stored in inverted
form in RDR.
1— 1 — Reserved
This bit is always read as 1.
0 SMIF 0 R/W Smart Card Interface Mode Select
This bit is set to 1 to make the SCI operate in
Smart Card interface mode.
0: Normal asynchronous mode or clocked
synchronous mode
1: Smart card interface mode