SMR—Serial Mode Register
H'B0
SCI0
Bit
Initial value
Read/Write
7
C/A GM
0
R/W
6
CHR
0
R/W
5
PE
0
R/W
3
STOP
0
R/W
0
CKS0
0
R/W
2
MP
0
R/W
1
CKS1
0
R/W
Parity enable
Clock select 1 and 0
CKS1
Clock Source
CKS0
Bit 0
Bit 1
0
1
ø clock
ø/4 clock
ø/16 clock
ø/64 clock
0
0
1
1
7
O/
0
R/W
E
0
Parity bit is not added or checked
1
Parity bit is added and checked
Parity mode
0
Even parity
1
Odd parity
Stop bit length
Multiprocessor mode
0
Multiprocessor function disabled
1
Multiprocessor format selected
0
One stop bit
1
Two stop bits
Character length
0
8-bit data
1
7-bit data
Communication mode
(when using a serial communication interface)
0
Asynchronous mode
1
Synchronous mode
GSM mode (when using a smart card interface)
0
Regular smart card interface operation
1
GSM mode smart card interface operation
796
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