CHAPTER 9 SERIAL INTERFACE 00
User's Manual U11919EJ3V0UM00
126
(2)
Asynchronous serial interface mode register 00 (ASIM00)
This register is set when using serial interface 00 in the asynchronous serial interface mode.
ASIM00 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears ASIM00 to 00H.
Figure 9-4. Asynchronous Serial Interface Mode Register 00 Format
TXE00
0
1
Transmit Operation Control
TXE00
RXE00
PS001
PS000
CL00
SL00
0
0
ASIM00
Symbol
Address
After Reset
R/W
FF70H
00H
R/W
<7>
<6>
5
4
3
2
1
0
Transmit operation stop
Transmit operation enable
Receive operation stop
Receive operation enable
RXE00
0
1
0
1
0
0
0
1
0
1
1
1
No parity
Always add 0 parity at transmission
Parity check is not performed at reception (No parity error is generated)
Odd parity
Even parity
Receive Operation Control
PS001
Parity Bit Specification
PS000
CL00
0
1
SL00
Character Length Specification
7 bits
8 bits
1 bit
2 bits
Transmit Data Stop Bit Length Specification
Cautions 1. Be sure to set bits 0 and 1 to 0.
2. Set 00H to ASIM00 at the 3-wire serial I/O mode.
3. Switching operating modes must be performed after the halt of serial transmit/receive
operation.
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Содержание UPD789026 Series
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