Datasheet

Table Of Contents
Section 13 Serial Communication Interface
Page 402 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
13.3.8 Smart Card Mode Register (SCMR)
SCMR selects the operation in smart card interface or the data Transfer formats.
Bit Bit Name Initial Value R/W Description
7 to 4 All 1 Reserved
These bits are always read as 1.
3 DIR 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.
2 INV 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
When this bit is set to 1, smart card interface mode is
selected.
0: Normal asynchronous or clocked synchronous mode
1: Smart card interface mode