HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 705

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

15.2.3
Note: * The DMAC is not supported in the H8S/2321.
The function of bits 7, 6, 3, and 2 of SMR changes in smart card interface mode.
Bit 7—GSM Mode (GM): Sets the smart card interface function to GSM mode.
This bit is cleared to 0 when the normal smart card interface is used. In GSM mode, this bit is set
to 1, the timing of setting of the TEND flag that indicates transmission completion is advanced,
and clock output control mode addition is performed. The contents of the clock output control
mode addition are specified by bits 1 and 0 of the serial control register (SCR).
Bit 7
GM
0
1
Note: etu: Elementary time unit (time for transfer of 1 bit)
Bit
Initial value :
R/W
Serial Mode Register (SMR)
Description
Normal smart card interface mode operation
•
•
GSM mode smart card interface mode operation
•
•
:
:
TEND flag generation 12.5 etu (11.5 etu in block transfer mode) after beginning of
start bit
Clock output on/off control only
TEND flag generation 11.0 etu after beginning of start bit
High/low fixing control possible in addition to clock output on/off control (set by
SCR)
R/W
GM
7
0
R/W
BLK
6
0
R/W
PE *
5
0
R/W
O/E
4
0
Rev.6.00 Sep. 27, 2007 Page 675 of 1268
BCP1
R/W
3
0
Section 15 Smart Card Interface
BCP0
R/W
2
0
REJ09B0220-0600
CKS1
R/W
1
0
(Initial value)
CKS0
R/W
0
0