HD6413007F20 Datasheet, PDF (524/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

14. Smart Card Interface
14.2.3 Serial Mode Register (SMR)
The function of SMR bit 7 is modified in smart card interface mode. This change also causes a
modification to the function of bits 1 and 0 in the serial control register (SCR).
Bit
7
6
5
4
3
2
1
0
GM
CHR
PE
O/E STOP MP CKS1 CKS0
Initial value
0
0
0
0
0
0
0
0
Read/Write R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit 7⎯GSM Mode (GM): With the normal smart card interface, this bit is cleared to 0. Setting
this bit to 1 selects GSM mode, an additional mode for controlling the timing for setting the
TEND flag that indicates completion of transmission, and the type of clock output used. The
details of the additional clock output control mode are specified by the CKE1 and CKE0 bits in
the serial control register (SCR).
Bit 7
GM
0
1
Description
Normal smart card interface mode operation
• The TEND flag is set 12.5 etu after the beginning of the start bit.
• Clock output on/off control only.
GSM mode smart card interface mode operation
• The TEND flag is set 11.0 etu after the beginning of the start bit.
• Clock output on/off and fixed-high/fixed-low control.
(Initial value)
Bits 6 to 0: These bits operate as in normal serial communication. For details see section 13.2.5,
Serial Mode Register (SMR).
14.2.4 Serial Control Register (SCR)
The function of SCR bits 1 and 0 is modified in smart card interface mode.
Bit
7
6
5
4
3
2
1
0
TIE
RIE
TE
RE MPIE TEIE CKE1 CKE0
Initial value
0
0
0
0
0
0
0
0
Read/Write R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bits 7 to 2: These bits operate as in normal serial communication. For details see section 13.2.6,
Serial Control Register (SCR).
Rev.5.00 Sep. 12, 2007 Page 494 of 764
REJ09B0396-0500