Smart Card Mode Register (Scmr) - Renesas H8SX/1500 Series Hardware Manual

12.3.8

Smart Card Mode Register (SCMR)

SCMR selects smart card interface mode and its format.
Bit 7
Bit Name —
Initial Value 1
R/W R
Bit Bit Name

7 to 4
3 SDIR
2 SINV

1
0 SMIF
6 5
— —
1 1
R R
Initial
Value R/W Description
All 1 R Reserved
These are read-only bits and cannot be modified.
0 R/W Smart Card Data Transfer Direction
Selects the serial/parallel conversion format.
0: Transfer with LSB-first
1: Transfer with MSB-first
This bit is valid only when the 8-bit data format is used for
transmission/reception; when the 7-bit data format is
used, data is always transmitted/received with LSB-first.
0 R/W Smart Card Data Invert
Inverts the transmit/receive data logic level. This 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
1: TDR contents are inverted before being transmitted.
1 R Reserved
This is a read-only bit and cannot be modified.
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
Section 12 Serial Communication Interface (SCI)
4 3
— SDIR
1 0
R R/W
data is stored as it is in RDR.
Receive data is stored in inverted form in RDR.
Rev. 3.00 Mar. 14, 2006 Page 397 of 804
2 1
SINV —
0 1
R/W R
REJ09B0104-0300
0
SMIF
0
R/W