12.10.3 Transmit Operation
12.10.3.1 Operation of Transmit Buffer
If double buffering is disabled, the CPU writes data only to transmit shift register and the transmit inter-
rupt INTTXx is generated upon completion of data transmission.
If double buffering is enabled (including the case the transmit FIFO is enabled), data written to the trans-
mit buffer is moved to the transmit shift register. The INTTXx interrupt is generated at the same time
and the transmit buffer empty flag (SCxMOD2<TBEMP>) is set to "1". This flag indicates that the next
transmit data can be written. When the next data is written to the transmit buffer, the <TBEMP> flag is
cleared to "0".
DATA 1
Transmit buffer
SCxMOD2<TBEMP>
Transmit shift register(INTTXx)
Write data
DATA 2
DATA 1
Transmit shift register
SCxMOD1<TXE>
Figure 12-8 Operation of Transmit Buffer (Double-buffer is enabled)
TMPM3V6/M3V4
12. Serial Channel with 4bytes FIFO (SIO/UART)
12.10 Transmit
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Содержание TMPM3V4
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Страница 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Страница 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
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Страница 148: ...TMPM3V6 M3V4 7 Exceptions 7 6 Exception Interrupt Related Registers Page 126 2019 02 06 ...
Страница 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Страница 206: ...TMPM3V6 M3V4 10 16 bit Timer Event Counters TMRB 10 7 Applications using the Capture Function Page 184 2019 02 06 ...
Страница 232: ...TMPM3V6 M3V4 11 Universal Asynchronous Receiver Transmitter Circuit UART 11 4 Operation Description Page 210 2019 02 06 ...
Страница 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
Страница 419: ...TMPM3V6 M3V4 Page 397 2019 02 06 ...
Страница 420: ...TMPM3V6 M3V4 16 Analog Digital Converter ADC 16 6 Timing chart of AD conversion Page 398 2019 02 06 ...
Страница 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Страница 510: ...TMPM3V6 M3V4 22 Flash Memory Operation 22 4 Programming in the User Boot Mode Page 488 2019 02 06 ...
Страница 538: ...TMPM3V6 M3V4 25 Electrical Characteristics 25 7 Recommended Oscillation Circuit Page 516 2019 02 06 ...
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