HD643303x Hitachi, HD643303x Datasheet - Page 525

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

SMR—Serial Mode Register
Bit
Initial value
Read/Write
Communication mode
0 Asynchronous mode
1 Synchronous mode
Character length
0 8-bit data
1 7-bit data
Parity enable
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
0 One stop bit
1 Two stop bits
R/W
C/
7
0
A
Multiprocessor mode
0 Multiprocessor function disabled
1 Multiprocessor format selected
CHR
R/W
6
0
R/W
PE
5
0
510
R/W
O/
7
0
E
STOP
R/W
3
0
Clock select 1 and 0
CKS1
Bit 1
H'B0
R/W
0
1
MP
2
0
CKS0
Bit 0
0
1
0
1
CKS1
R/W
1
0
Clock Source
ø clock
ø/4 clock
ø/16 clock
ø/64 clock
CKS0
R/W
0
0
SCI