Datasheet

Rev. 2.00 Aug. 20, 2008 Page xvi of xlviii
Section 13 Serial Communication Interface (SCI)............................................431
13.1 Features.............................................................................................................................. 431
13.2 Input/Output Pins............................................................................................................... 434
13.3 Register Descriptions......................................................................................................... 434
13.3.1 Receive Shift Register (RSR) ............................................................................... 435
13.3.2 Receive Data Register (RDR)............................................................................... 435
13.3.3 Transmit Data Register (TDR).............................................................................. 435
13.3.4 Transmit Shift Register (TSR) .............................................................................. 435
13.3.5 Serial Mode Register (SMR) ................................................................................ 436
13.3.6 Serial Control Register (SCR) .............................................................................. 439
13.3.7 Serial Status Register (SSR) ................................................................................. 442
13.3.8 Smart Card Mode Register (SCMR)..................................................................... 446
13.3.9 Bit Rate Register (BRR) ....................................................................................... 447
13.4 Operation in Asynchronous Mode ..................................................................................... 451
13.4.1 Data Transfer Format............................................................................................ 452
13.4.2 Receive Data Sampling Timing and Reception Margin in
Asynchronous Mode............................................................................................. 453
13.4.3 Clock..................................................................................................................... 454
13.4.4 SCI Initialization (Asynchronous Mode).............................................................. 455
13.4.5 Serial Data Transmission (Asynchronous Mode) ................................................. 456
13.4.6 Serial Data Reception (Asynchronous Mode) ...................................................... 458
13.5 Multiprocessor Communication Function.......................................................................... 462
13.5.1 Multiprocessor Serial Data Transmission ............................................................. 464
13.5.2 Multiprocessor Serial Data Reception .................................................................. 465
13.6 Operation in Clock Synchronous Mode............................................................................. 468
13.6.1 Clock..................................................................................................................... 468
13.6.2 SCI Initialization (Clock Synchronous Mode)...................................................... 469
13.6.3 Serial Data Transmission (Clock Synchronous Mode)......................................... 470
13.6.4 Serial Data Reception (Clock Synchronous Mode) .............................................. 473
13.6.5 Simultaneous Serial Data Transmission and Reception
(Clock Synchronous Mode) .................................................................................. 475
13.7 Smart Card Interface Description ...................................................................................... 477
13.7.1 Sample Connection ............................................................................................... 477
13.7.2 Data Format (Except in Block Transfer Mode) .................................................... 477
13.7.3 Block Transfer Mode............................................................................................ 479
13.7.4 Receive Data Sampling Timing and Reception Margin ....................................... 480
13.7.5 Initialization.......................................................................................................... 481
13.7.6 Serial Data Transmission (Except in Block Transfer Mode) ................................ 482
13.7.7 Serial Data Reception (Except in Block Transfer Mode) ..................................... 485
13.7.8 Clock Output Control............................................................................................ 487