11.4.7 50% Duty Mode
11.4.7.1 Outline
The following functions are available in the 50% duty mode.
・
Communication pins:
For transmission UTxTXD50A and UTxTXD50B
For reception UTxRXD50
・
1-pin transmission mode
・
2-pin transmission mode
・
Selection of the start bit pin
・
Detection control of data "0" in the reception period
・
The loop-back test function
Note:
In 50% duty mode, do not perform the full-duplex transmission except when the loop-back test is en-
abled.
11.4.7.2 Control
When "1" is set to
UARTxHCCR
<HCCR>, the 50% duty control circuit is enabled, and the UART en-
ters the 50% duty mode. Duty conversion is performed on transmission/reception signals in the 50% duty
control circuit.
Port pin functions can select whether duty conversion is performed on the signal.
Figure 11-1 shows the circuit configuration.
Note:
Do not modify the UARTxHCCR register during the communication.
11.4.7.3 Operational Description
(1)
Transmission
(a)
1-pin transmission mode
This mode transmits the same data through UTxTXD50A and UTxTXD50B.
0
1
1
0
1
0
1
1
0
1
1
0
0
0
0
50% duty
Start
bit
Stop
bit
Parity
bit
Data bit
50% duty
50% duty
0
0
0
0
50% duty
UTxTXD
UTxTXD50A
UTxTXD50B
Figure 11-3 Example of waveforms in 1-pin transmission mode
TMPM3V6/M3V4
Page 207
2019-02-06
Содержание TMPM3V4
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Страница 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
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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 ...
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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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