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13.8 Interrupt Sources................................................................................................................ 487
13.8.1 Interrupts in Normal Serial Communication Interface Mode ............................... 487
13.8.2 Interrupts in Smart Card Interface Mode .............................................................. 488
13.9 Usage Notes ....................................................................................................................... 489
13.9.1 Module Stop Mode Setting ................................................................................... 489
13.9.2 Break Detection and Processing ........................................................................... 489
13.9.3 Mark State and Break Sending.............................................................................. 489
13.9.4 Receive Error Flags and Transmit Operations
(Clock Synchronous Mode Only) ......................................................................... 489
13.9.5 Relation between Writing to TDR and TDRE Flag .............................................. 489
13.9.6 Restrictions on Using DTC................................................................................... 490
13.9.7 SCI Operations during Mode Transitions ............................................................. 491
13.9.8 Notes on Switching from SCK Pins to Port Pins .................................................. 495
Section 14 Crc Operation Circuit (Crc).........................................................497
14.1 Features.............................................................................................................................. 497
14.2 Register Descriptions ......................................................................................................... 498
14.2.1 CRC Control Register (CRCCR) .......................................................................... 498
14.2.2 CRC Data Input Register (CRCDIR).................................................................... 499
14.2.3 CRC Data Output Register (CRCDOR)................................................................ 499
14.3 CRC Operation Circuit Operation...................................................................................... 499
14.4 Note on CRC Operation Circuit......................................................................................... 503
Section 15 Serial Communication Interface With Fifo (Scif) ........................505
15.1 Features.............................................................................................................................. 505
15.2 Input/Output Pins ............................................................................................................... 507
15.3 Register Descriptions ......................................................................................................... 508
15.3.1 Receive Shift Register (FRSR) ............................................................................. 509
15.3.2 Receive Buffer Register (FRBR) .......................................................................... 509
15.3.3 Transmitter Shift Register (FTSR)........................................................................ 509
15.3.4 Transmitter Holding Register (FTHR).................................................................. 510
15.3.5 Divisor Latch H, L (FDLH, FDLL) ...................................................................... 510
15.3.6 Interrupt Enable Register (FIER).......................................................................... 511
15.3.7 Interrupt Identification Register (FIIR)................................................................. 512
15.3.8 FIFO Control Register (FFCR) ............................................................................. 514
15.3.9 Line Control Register (FLCR) .............................................................................. 515
15.3.10 Modem Control Register (FMCR)........................................................................ 516
15.3.11 Line Status Register (FLSR)................................................................................. 518
15.3.12 Modem Status Register (FMSR)........................................................................... 522
15.3.13 Scratch Pad Register (FSCR)................................................................................ 523
Rev. 1.00 Mar. 12, 2008 Page xvii of xIviii
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