
User’s Manual U16541EJ4V0UD
14
15.1.2
UARTA2 and I
2C00 mode switching.........................................................................................488
15.1.3
UARTA1 and I
2C02 mode switching.........................................................................................489
15.2
Features................................................................................................................................. 490
15.3
Configuration ........................................................................................................................ 491
15.4
Registers ............................................................................................................................... 493
15.5
Interrupt Request Signals.................................................................................................... 499
15.6
Operation............................................................................................................................... 500
15.6.1
Data format ..............................................................................................................................500
15.6.2
SBF transmission/reception format ..........................................................................................502
15.6.3
SBF transmission.....................................................................................................................504
15.6.4
SBF reception ..........................................................................................................................505
15.6.5
UART transmission ..................................................................................................................506
15.6.6
Continuous transmission procedure.........................................................................................507
15.6.7
UART reception .......................................................................................................................509
15.6.8
Reception errors ......................................................................................................................510
15.6.9
Parity types and operations .....................................................................................................512
15.6.10 Receive data noise filter...........................................................................................................513
15.7
Dedicated Baud Rate Generator ......................................................................................... 514
15.8
Cautions ................................................................................................................................ 522
CHAPTER 16 3-WIRE VARIABLE-LENGTH SERIAL I/O (CSIB).................................................... 523
16.1
Mode Switching of CSIB and Other Serial Interfaces ....................................................... 523
16.1.1
CSIB4 and UARTA0 mode switching.......................................................................................523
16.1.2
CSIB0 and I
2C01 mode switching ............................................................................................524
16.2
Features................................................................................................................................. 525
16.3
Configuration ........................................................................................................................ 526
16.4
Registers ............................................................................................................................... 528
16.5
Operation............................................................................................................................... 535
16.5.1
Single transfer mode (master mode, transmission/reception mode) ........................................535
16.5.2
Single transfer mode (master mode, reception mode) ............................................................. 536
16.5.3
Continuous mode (master mode, transmission/reception mode) ............................................. 537
16.5.4
Continuous mode (master mode, reception mode) ..................................................................538
16.5.5
Continuous reception mode (error) ..........................................................................................539
16.5.6
Continuous mode (slave mode, transmission/reception mode)................................................ 540
16.5.7
Continuous mode (slave mode, reception mode).....................................................................541
16.5.8
Clock timing .............................................................................................................................542
16.6
Output Pins ........................................................................................................................... 544
16.7
Operation Flow...................................................................................................................... 545
16.8
Baud Rate Generator............................................................................................................ 551
16.8.1
Baud rate generation ...............................................................................................................552
16.9
Cautions ................................................................................................................................ 553
CHAPTER 17 I
2C BUS .......................................................................................................................... 554
17.1
Mode Switching of I
2C Bus and Other Serial Interfaces ................................................... 554
17.1.1
UARTA2 and I
2C00 mode switching.........................................................................................554
17.1.2
CSIB0 and I
2C01 mode switching ............................................................................................555
17.1.3
UARTA1 and I
2C02 mode switching.........................................................................................556
17.2
Features................................................................................................................................. 557