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SMR2—Serial Mode Register 2
Bit
7
GM
Initial value
0
Read/Write
R/W
GSM Mode
0 Normal smart card interface mode operation
• TEND flag generation 12.5 etu after beginning of start bit (11.5 etu in block transfer mode)
• Clock output on/off control only
1
GSM mode smart card interface mode operation
• 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)
Note: etu (Elementary Time Unit): Time for transfer of 1 bit
590
6
5
BLK
PE
0
0
R/W
R/W
Parity Enable
(Set to 1 when using smart card interface)
0 Setting prohibited
1
Parity bit addition and checking enabled
Block Transfer Mode Select
0 Normal smart card interface mode
1
Block transfer mode
H'FF88
4
3
O/E
BCP1
0
0
R/W
R/W
Basic Clock Pulse
BCP1
0
1
Parity Mode
0 Even parity
1
Odd parity
Smart Card Interface 2
2
1
BCP0
CKS1
0
0
R/W
R/W
Clock Select
0
0 ø clock
1
ø/4 clock
1
0
ø/16 clock
1
ø/64 clock
BCP0 Basic Clock Pulse
0
32 clock periods
1
64 clock periods
0
372 clock periods
1
256 clock periods
0
CKS0
0
R/W
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