Datasheet

Table Of Contents
Rev. 2.00 Jul. 04, 2007 Page xix of xl
17.3.11 IrDA Control Register (IrCR)............................................................................... 376
17.3.12 Serial Extended Mode Register (SEMR) .............................................................. 377
17.4 Operation in Asynchronous Mode ..................................................................................... 378
17.4.1 Clock..................................................................................................................... 379
17.4.2 SCI3 Initialization................................................................................................. 383
17.4.3 Data Transmission ................................................................................................ 384
17.4.4 Serial Data Reception ........................................................................................... 386
17.5 Operation in Clock Synchronous Mode............................................................................. 390
17.5.1 Clock..................................................................................................................... 390
17.5.2 SCI3 Initialization................................................................................................. 390
17.5.3 Serial Data Transmission ...................................................................................... 391
17.5.4 Serial Data Reception (Clock Synchronous Mode) .............................................. 393
17.5.5 Simultaneous Serial Data Transmission and Reception........................................ 395
17.6 Multiprocessor Communication Function.......................................................................... 396
17.6.1 Multiprocessor Serial Data Transmission ............................................................. 398
17.6.2 Multiprocessor Serial Data Reception .................................................................. 399
17.7 IrDA Operation .................................................................................................................. 401
17.7.1 Transmission......................................................................................................... 402
17.7.2 Reception .............................................................................................................. 403
17.7.3 High-Level Pulse Width Selection........................................................................ 403
17.8 Interrupt Requests .............................................................................................................. 404
17.9 Usage Notes ....................................................................................................................... 407
17.9.1 Break Detection and Processing ........................................................................... 407
17.9.2 Mark State and Break Sending.............................................................................. 407
17.9.3 Receive Error Flags and Transmit Operations
(Clock Synchronous Mode Only) ......................................................................... 407
17.9.4 Receive Data Sampling Timing and Reception Margin in Asynchronous
Mode..................................................................................................................... 408
17.9.5 Note on Switching SCK3 Pin Function ................................................................ 409
17.9.6 Relation between Writing to TDR and Bit TDRE ................................................ 409
17.9.7 Relation between RDR Reading and bit RDRF.................................................... 410
17.9.8 Transmit and Receive Operations when Making State Transition........................ 411
17.9.9 Setting in Subactive or Subsleep Mode ................................................................ 411
17.9.10 Oscillator when Serial Communications Interface 3 is Used................................ 411
Section 18 Serial Communication Interface 4 (SCI4) .......................................413
18.1 Features.............................................................................................................................. 413
18.2 Input/Output Pins............................................................................................................... 414
18.3 Register Descriptions ......................................................................................................... 415
18.3.1 Serial Control Register 4 (SCR4).......................................................................... 415