ml670100 Oki Semiconductor, ml670100 Datasheet - Page 119

• Manufacturer Part Number: ml670100
• Description: Ml670100 Is A High-performance 32-bit Microcontroller
• Manufacturer: Oki Semiconductor

8.2
8.2.1
The ASI Control Register (ASICON) is an 8-bit read/write register that controls transmission
and reception.
After a system reset, this register contains 0x00, which specifies the default parameters of 8-bit
character, 2 stop bits, and no parity.
Always wait for current transmit and receive operations to terminate before modifying the
contents of this register. Modification in the middle of such operations interferes with not only
the current operation, but subsequent operations as well.
Bit Descriptions
ASRVEN
This bit enables/disables receive operation. Setting it to "1" enables receive operation; writing
"0" disables it.
ASTSTB
This bit controls the number (1 or 2) of stop bits for transmit operation. Setting it to "1" sets the
number of stop bits to 1; writing "0," to 2.
Control Registers
ASI Control Register (ASICON)
ASRVEN
7
6
0
A “0” indicates a reserved bit. Always write ”0” to it.
Writing “1” produces unreliable operation.
Figure 8.3 : ASI Control Register (ASICON)
5
0
4
0
ASTSTB
3
ASEVN
2
ASPEN
1
ASLN
0
0
1
0
1
0
1
0
1
0
1
Character length: 8 bits
Character length: 7 bits
Parity bit :disabled (none)
Parity bit :enabled
Parity :odd
Parity :even
Stop bits :2
Stop bits :1
Receive :disabled
Receive :enabled
8-5