Format Of Asynchronous Serial Interface Mode Register 0, 1 (Asim0, Asim1) - NEC V850/SA1 mPD703015 Preliminary User's Manual

Figure 10-29. Format of Asynchronous Serial Interface Mode Register 0, 1 (ASIM0, ASIM1)
After reset: 00H R/W
7
ASIMn TXEn
(n = 0, 1)
TXEn
0
0
1
1
PS1n
0
0
1
1
UCLn
0 7 bits
1 8 bits
SLn
0 1 bit
1 2 bits
ISRMn
0 Receive completion interrupt is issued when an error occurs
1 Receive completion interrupt is not issued when an error occurs
Caution Do not switch the operation mode until after the current serial transmit/receive operation has
stopped.
CHAPTER 10 SERIAL INTERFACE FUNCTION
Address: FFFFF300H, FFFFF310H
6 5
RXEn PS1n PS0n
RXEn Operation Mode
0 Operation stop
1 UARTn mode (receive only)
0 UARTn mode (transmit only)
1 UARTn mode (transmit and receive)
PS0n
0 No parity
1 Zero parity always added during transmission
No parity detection during reception (parity errors do not occur)
0 Odd parity
1 Even parity
Stop Bit Length Specification for Transmit Data
Receive Completion Interrupt Control when Error Occurs
4 3 2
UCLn SLn
RxDn/PXX Pin
Function
Port function
Serial function
Port function
Serial function
Parity Bit Specification
Character Length Specification
1 0
ISRMn 0
TxDn/PXX Pin
Function
Port function
Port function
Serial function
Serial function
283