CHAPTER 12 SERIAL INTERFACE FUNCTION
Preliminary User’s Manual U15905EJ1V0UD
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(8) Transmit buffer register n (TXBn)
TXBn is an 8-bit buffer for transmit data. A transmit operation is started by writing transmit data to TXBn. The
transmission completion interrupt request (INTSTn) 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
TXBn register, according to the contents that were set in the ASIMn register.
Figure 12-3. Asynchronous Serial Interface n Block Diagram
Parity
Framing
Overrun
Internal bus
Asynchronous serial interface
mode register n (ASIMn)
Receive buffer
register n (RXBn)
Receive
shift register
Reception control
parity check
Transmit buffer
register n (TXBn)
Transmit
shift register
Addition of transmission
control parity
BRGn
INTSREn
INTSRn
INTSTn
RXDn
TXDn
Remark
n = 0, 1
Содержание V850ES/SA2 UPD703201
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