
8
13.1 Overview.......................................................................................................... 335
13.1.1 Features................................................................................................ 335
13.1.2 Block Diagram....................................................................................... 336
13.1.3 Pin Configuration .................................................................................. 337
13.1.4 Register Configuration ............................................................................ 337
13.2 Register Descriptions.......................................................................................... 338
13.2.1 Receive Shift Register (SCRSR)............................................................... 338
13.2.2 Receive Data Register (SCRDR)............................................................... 338
13.2.3 Transmit Shift Register (SCTSR) ............................................................. 338
13.2.4 Transmit Data Register (SCTDR).............................................................. 339
13.2.5 Serial Mode Register (SCSMR)................................................................ 339
13.2.6 Serial Control Register (SCSCR).............................................................. 342
13.2.7 Serial Status Register (SCSSR)................................................................ 345
13.2.8 Serial Port Register (SCSPTR)................................................................. 349
13.2.9 Bit Rate Register (SCBRR)...................................................................... 350
13.3 Operation ......................................................................................................... 358
13.3.1 Overview .............................................................................................. 358
13.3.2 Operation in Asynchronous Mode.............................................................. 360
13.3.3 Multiprocessor Communication ................................................................ 370
13.3.4 Synchronous Operation ........................................................................... 378
13.4 SCI Interrupt Sources ......................................................................................... 388
13.5 Usage Notes...................................................................................................... 388
Section 14 Smart Card Interface.......................................................393
14.1 Overview.......................................................................................................... 393
14.1.1 Features................................................................................................ 393
14.1.2 Block Diagram....................................................................................... 394
14.1.3 Pin Configuration .................................................................................. 395
14.1.4 Register Configuration ............................................................................ 395
14.2 Register Descriptions.......................................................................................... 395
14.2.1 Smart Card Mode Register (SCSCMR) ...................................................... 396
14.2.2 Serial Status Register (SCSSR)................................................................ 397
14.3 Operation ......................................................................................................... 398
14.3.1 Overview .............................................................................................. 398
14.3.2 Pin Connections .................................................................................... 399
14.3.3 Data Format .......................................................................................... 400
14.3.4 Register Settings.................................................................................... 401
14.3.5 Clock................................................................................................... 403
14.3.6 Data Transmission and Reception .............................................................. 405
14.4 Usage Notes...................................................................................................... 412
14.4.1 Receive Data Timing and Receive Margin in Asynchronous Mode................... 412
14.4.2 Retransmission (Receive and Transmit Modes)............................................. 414