366
Chapter 13
Serial Interface Function
Preliminary User’s Manual U15839EE1V0UM00
(8)
Transmission buffer registers (TXB0, TXB1)
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 13-1:
Asynchronous Serial Interfaces Block Diagram
Remark:
n = 0, 1
Parity
Framing
Overrun
Internal bus
Asynchronous serial interface
mode register n (ASIMn)
Reception buffer
register n (RXBn)
Reception
shift register
Reception control
parity check
Transmission buffer
register n (TXBn)
Transmission
shift register
Addition of transmission
control parity
BRG
INTSER5n
INTSR5n
INTST5n
RXD5n
TXD5n
Summary of Contents for mPD703128
Page 6: ...6 Preliminary User s Manual U15839EE1V0UM00 ...
Page 20: ...20 Preliminary User s Manual U15839EE1V0UM00 ...
Page 32: ...32 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 154: ...154 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 238: ...238 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 356: ...356 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 522: ...522 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 600: ...600 Preliminary User s Manual U15839EE1V0UM00 MEMO ...
Page 610: ...610 Preliminary User s Manual U15839EE1V0UM00 ...
Page 612: ......