H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 606

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 13 Serial Communication Interface (SCI)
13.2.9
SCMR selects LSB-first or MSB-first by means of bit SDIR. Except in the case of asynchronous
mode 7-bit data, LSB-first or MSB-first can be selected regardless of the serial communication
mode. The descriptions in this chapter refer to LSB-first transfer.
For details of the other bits in SCMR, see 14.2.1, Smart Card Mode Register (SCMR).
SCMR is initialized to H'F2 by a reset, and in standby mode or module stop 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.
This bit is valid when 8-bit data is used as the transmit/receive format.
Bit 2—Smart Card Data Invert (SINV): When the smart card interface operates as a normal
SCI, 0 should be written in this bit.
Bit 1—Reserved: Read-only bit, always read as 1.
Bit 0—Smart Card Interface Mode Select (SMIF): When the smart card interface operates as a
normal SCI, 0 should be written in this bit.
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REJ09B0330-0300
Bit 3
SDIR
0
1
Bit
Initial value
R/W
Smart Card Mode Register (SCMR)
Description
TDR contents are transmitted LSB-first
Receive data is stored in RDR LSB-first
TDR contents are transmitted MSB-first
Receive data is stored in RDR MSB-first
:
:
:
—
—
7
1
—
—
6
1
—
—
5
1
—
—
4
1
SDIR
R/W
3
0
SINV
R/W
2
0
—
—
1
1
(Initial value)
SMIF
R/W
0
0