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CHAPTER 20 UART2, UART3
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Oversampling Unit
The oversampling unit oversamples the incoming data at the SIN2/SIN3 pin for five times with the
machine clock. It is not operated in synchronous operation mode.
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Interrupt Generation Circuit
The interrupt generation circuit administers all cases of generating a reception or transmission interrupt. If a
corresponding enable flag is set and an interrupt case occurs the interrupt will be generated immediately.
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LIN synch Break and Synchronization Field Detection Circuit
The LIN break and LIN synchronization field detection circuit detects a LIN break, if a LIN master node is
sending a message header. If a LIN break is detected a special flag bit is generated. The first and the fifth
falling edge of the LIN synchronization field is recognized by this circuit by generating an internal signal
(LSYN) for the Input Capture Unit to measure the actual serial clock time of the transmitting master node.
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LIN Synch Break Generation Circuit
The LIN break generation circuit generates a LIN break of a determined length.
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Bus Idle Detection circuit
The bus idle detection circuit recognizes if neither reception nor transmission is going on. In this case, the
circuit generates the special flag bits TBI and RBI.
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LIN-UART2, LIN-UART3 Serial Mode Register (SMR2/SMR3)
This register performs the following operations:
•
Selecting the LIN-UART2, LIN-UART3 operation mode
•
Selecting a clock input source
•
Selecting if an external clock is connected "one-to-one" or connected to the reload counter
•
Resetting dedicated reload timer
•
Resetting the LIN-UART2, LIN-UART3 (preserving the settings of the registers)
•
Specifying whether to enable serial data output to the corresponding pin
•
Specifying whether to enable clock output to the corresponding pin
●
Serial Control Register (SCR2/SCR3)
This register performs the following operations:
•
Specifying whether to provide parity bits
•
Selecting parity bits
•
Specifying a stop bit length
•
Specifying a data length
•
Selecting a frame data format in mode 1
•
Clearing the error flags
•
Specifying whether to enable transmission
•
Specifying whether to enable reception
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
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Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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