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SMR1—Serial Mode Register 1
Bit
7
C/A
Initial value
0
Read/Write
R/W
Communication Mode
0
Asynchronous mode
1
Clocked synchronous mode
1042
6
5
4
CHR
PE
O/E
0
0
0
R/W
R/W
R/W
Parity Mode
0
1
Parity Enable
0
Parity bit addition and checking disabled
1
Parity bit addition and checking enabled
Character Length
0
8-bit data
*1
1
7-bit data
H'FF80
3
2
STOP
MP
0
0
R/W
R/W
Multiprocessor Mode
0
Multiprocessor function disabled
1
Multiprocessor format selected
Stop Bit Length
0
1 stop bit: In transmission, a single 1 bit (stop bit)
is added to the end of a transmit character before
it is sent.
2 stop bits: In transmission, two 1 bits (stop bits)
1
are added to the end of a transmit character
before it is sent.
*3
Even parity
*4
Odd parity
1
0
CKS1
CKS0
0
0
R/W
R/W
Clock Select 1 and 0
0
0
ø clock
1
ø/4 clock
1
0
ø/16 clock
1
ø/64 clock
*2
SCI1
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