CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U14492EJ3V0UD
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(8) Transmission buffer register 0 (TXB0)
TXB0 is an 8-bit buffer for transmit data. A transmit operation is started by writing transmit data to TXB0.
The transmission completion interrupt request (INTST0) is generated synchronized with the completion of
transmission of one frame.
(9) Addition of transmission control parity
A transmit operation is controlled by adding a start bit, parity bit, or stop bit to the data that is written to the
TXB0 register, according to the contents that were set in the ASIM0 register.
Figure 10-1. Asynchronous Serial Interface 0 Block Diagram
Parity
Framing
Overrun
Internal bus
Asynchronous serial interface
mode register 0 (ASIM0)
Reception buffer
register 0 (RXB0)
Reception
shift register
Reception control
parity check
Transmission buffer
register 0 (TXB0)
Transmission
shift register
Addition of transmission
control parity
BRG0
INTSER0
INTSR0
INTST0
RXD0
TXD0
Содержание V850E/IA1 mPD703116
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