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SMR—Serial Mode Register
7
Bit
C/A
Initial value
0
Read/Write
R/W
Communication mode (for serial communication interface)
Asynchronous mode
0
1
Synchronous mode
GSM mode (for smart card interface)
TEND flag is set 12.5 etu* after start bit
0
1
TEND flag is set 11.0 etu* after start bit
Note: * etu: Elementary time unit (time required to transmit one bit)
6
5
CHR
PE
0
0
R/W
R/W
Parity mode
0
1
Parity enable
Parity bit is not added or checked
0
1
Parity bit is added and checked
Character length
8-bit data
0
1
7-bit data
Appendix B Internal I/O Registers
H'FFFB0
4
3
2
O/E
STOP
MP
0
0
0
R/W
R/W
R/W
Multiprocessor mode
0
Multiprocessor function disabled
Multiprocessor format selected
1
Stop bit length
One stop bit
0
1
Two stop bits
Even parity
Odd parity
Rev. 4.00 Jan 26, 2006 page 861 of 938
SCI0
1
0
CKS1
CKS0
0
0
R/W
R/W
Clock select 1 and 0
Bit 1
Bit 0
Clock Source
CKS1
CKS0
φ clock
0
0
φ/4 clock
1
φ/16 clock
0
1
φ/64 clock
1
REJ09B0276-0400
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