12.12.2 Transmit interrupts
Figure 12-14 shows the data flow of transmit operation and the route of read.
TX FIFO First stage
Second stage
Third stage
Fourth stage
Transmit buffer
Transmit shift register
If the shift register is empty,
the data is moved.
If the transmit buffer is empty,
the data is moved.
(1)Writing in the single buffer configuration :
An interrupt is generated after transmitting all bits.
(2)Writing in the double buffer configuration :
An interrupt is generated when the data is moved to
the transmit shift register.
(3)Writing in use the FIFO :
An interrupt is generated
w
hen the data is moved to the transmit buffer
or when wr
i
ting to the FIFO.
TXDx
Figure 12-14 Transmit Buffer / FIFO Configuration Diagram
12.12.2.1 Singe Buffer / Double Buffer
Transmit interrupts are generated at the time depends on the transfer mode and the buffer configura-
tions, which are given as follows.
Table 12-9 Transmit Interrupt conditions in use of Single Buffer/Double Buffer
Buffer
Configurations
UART modes
IO interface modes
Single Buffer
Just before the stop bit is sent
Immediately after the raising / falling edge of the last SCLKx pin
(Rising or falling is determined according to SCxCR<SCLKS> setting.)
Double Buffer
When a data is moved from the transmit buffet to the transmit shift register.
When SCxMOD1<TXE> is "1" and the transmit shift register is empty, if data is transferred to the transmit shift regis-
ter from the transmit buffer immediately after the data is written to the transmit buffer, a transmit interrupt occurs.
TMPM3V6/M3V4
12. Serial Channel with 4bytes FIFO (SIO/UART)
12.12 Interrupt/Error Generation Timing
Page 252
2019-02-06
Содержание TMPM3V4
Страница 1: ...32 Bit RISC Microcontroller TX03 Series TMPM3V6 M3V4 ...
Страница 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Страница 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
Страница 8: ......
Страница 22: ...xiv ...
Страница 52: ...TMPM3V6 M3V4 3 Processor Core 3 6 Exclusive access Page 30 2019 02 06 ...
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 ...
Страница 541: ...26 3 TMPM3V4FWUG TMPM3V4FSUG Type LQFP64 P 1010 0 50E LPHQVLRQV TMPM3V6 M3V4 Page 519 2019 02 06 ...
Страница 544: ......