
ML62Q1000 Series User's Manual
Chapter 11 Serial Communication Unit
FEUL62Q1000
11-53
11.3.2.10 Receive Margin
If there is an error between the sender baud rate and the receiver baud rate generated by the baud rate generator, the error
accumulates until the last stop bit loading in one frame, decreasing the reception margin.
Figure 11-19 shows the baud rate errors and reception margin waveforms.
Figure 11-19 Baud Rate Errors and Reception Margin
[Note]
Ÿ
When designing the system, consider the difference of the baud rate between the transmission side and
reception side and delay of the start bit detection and adjust the baud rate in the UAn0BRT, UAn1BRT,
UAn0BRC, and UAn1BRC registers.
11.3.2.11 Note on usage of Half-duplex UART
When using the half-duplex UART and changing the transmission mode to receive mode, you must initialize and reconfigure
the channel as the receive mode after reset the channel of serial communication unit by Block Reset Control Register 2
(BRECON2). Notice that the reset by the BRECON2 register also resets other channel of the half-duplex UART.
Figure 11-20 shows the flow chart.
Figure 11-20 Flow chart for switching the transmission mode to the receive mode in Half-duplex UART mode
Sender baud rate is
slow (RXDn)
Sampling timing
UnRSS=1
UnRSS=0
Start
Start
Start
Stop
Stop
Stop
Sender baud rate is
fast (RXDn)
Ideal waveform
(RXDn)
Set the corresponding bit of the BRECON2 to "1" to
reset the target channel and then reset the bit to
"0" to release the reset.
Run the UART receive mode
Initialize and reconfigure the
channel as the receive mode
UART transmission is completed
Reset the channel by Block Reset
Control Register 2 (BRECON2).
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...