Smart Card Mode Register (Scmr) - Renesas H8S Series Hardware Manual

Section 14 Serial Communication Interface (SCI)
14.3.8

Smart Card Mode Register (SCMR)

SCMR is a register that selects Smart Card interface mode and its format.
Bit Bit Name Initial Value
7 to — All 1
4
3 SDIR 0
2 SINV 0
1 — 1
0 SMIF 0
Rev. 6.00 Mar 15, 2006 page 330 of 570
REJ09B0211-0600
R/W Description
— Reserved
These bits are always read as 1.
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.
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
— Reserved
This bit is always read as 1.
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