
Rev. 1.00 Mar. 02, 2006 Page xviii of xl
Section 13 Serial Communication Interface (SCI)............................................ 343
13.1
Features............................................................................................................................. 343
13.2
Input/Output Pins.............................................................................................................. 345
13.3
Register Descriptions........................................................................................................ 345
13.3.1
Receive Shift Register (RSR) ........................................................................... 346
13.3.2
Receive Data Register (RDR)........................................................................... 346
13.3.3
Transmit Data Register (TDR).......................................................................... 346
13.3.4
Transmit Shift Register (TSR) .......................................................................... 346
13.3.5
Serial Mode Register (SMR) ............................................................................ 347
13.3.6
Serial Control Register (SCR) .......................................................................... 350
13.3.7
Serial Status Register (SSR) ............................................................................. 353
13.3.8
Smart Card Mode Register (SCMR)................................................................. 358
13.3.9
Bit Rate Register (BRR) ................................................................................... 359
13.4
Operation in Asynchronous Mode .................................................................................... 364
13.4.1
Data Transfer Format........................................................................................ 365
13.4.2
Receive Data Sampling Timing and Reception Margin
in Asynchronous Mode..................................................................................... 366
13.4.3
Clock................................................................................................................. 367
13.4.4
SCI Initialization (Asynchronous Mode) .......................................................... 368
13.4.5
Serial Data Transmission (Asynchronous Mode) ............................................. 369
13.4.6
Serial Data Reception (Asynchronous Mode) .................................................. 371
13.5
Multiprocessor Communication Function ........................................................................ 375
13.5.1
Multiprocessor Serial Data Transmission ......................................................... 377
13.5.2
Multiprocessor Serial Data Reception .............................................................. 378
13.6
Operation in Clocked Synchronous Mode ........................................................................ 381
13.6.1
Clock................................................................................................................. 381
13.6.2
SCI Initialization (Clocked Synchronous Mode).............................................. 382
13.6.3
Serial Data Transmission (Clocked Synchronous Mode) ................................. 383
13.6.4
Serial Data Reception (Clocked Synchronous Mode) ...................................... 385
13.6.5
Simultaneous Serial Data Transmission and Reception
(Clocked Synchronous Mode) .......................................................................... 387
13.7
Smart Card Interface Description ..................................................................................... 389
13.7.1
Sample Connection ........................................................................................... 389
13.7.2
Data Format (Except in Block Transfer Mode) ................................................ 390
13.7.3
Block Transfer Mode ........................................................................................ 391
13.7.4
Receive Data Sampling Timing and Reception Margin ................................... 392
13.7.5
Initialization...................................................................................................... 393
13.7.6
Serial Data Transmission (Except in Block Transfer Mode) ............................ 393
13.7.7
Serial Data Reception (Except in Block Transfer Mode) ................................. 396
13.7.8
Clock Output Control........................................................................................ 398