HD6417618 datasheet(16/646 Pages) RENESAS

16 / 646 page

Rev. 6.00 Jun. 12, 2007 Page xvi of xxxii

12.4.2 Usage Notes on SH-Ether Transmit-FIFO Underflow.......................................... 306

Section 13 Compare Match Timer (CMT) .......................................................... 315

13.1

Features.............................................................................................................................. 315

13.2

Register Descriptions ......................................................................................................... 316

13.2.1 Compare Match Timer Start Register (CMSTR) .................................................. 316

13.2.2 Compare Match Timer Control/Status Register (CMCSR) .................................. 317

13.2.3 Compare Match Counter (CMCNT) ..................................................................... 318

13.2.4 Compare Match Constant Register (CMCOR) ..................................................... 318

13.3

Operation ........................................................................................................................... 319

13.3.1 Interval Count Operation ...................................................................................... 319

13.3.2 CMCNT Count Timing......................................................................................... 319

13.4

Interrupts............................................................................................................................ 320

13.4.1 Interrupt Sources................................................................................................... 320

13.4.2 Timing of Setting Compare Match Flag ............................................................... 320

13.4.3 Timing of Clearing Compare Match Flag............................................................. 320

13.5

Usage Notes ....................................................................................................................... 321

13.5.1 Conflict between Write and Compare-Match Processes of CMCNT ................... 321

13.5.2 Conflict between Word-Write and Count-Up Processes of CMCNT ................... 322

13.5.3 Conflict between Byte-Write and Count-Up Processes of CMCNT..................... 323

13.5.4 Conflict between Write Processes to CMCNT with the Counting Stopped and

CMCOR................................................................................................................ 323

Section 14 Serial Communication Interface with FIFO (SCIF) .......................... 325

14.1

Overview............................................................................................................................ 325

14.1.1 Features................................................................................................................. 325

14.2

Pin Configuration...............................................................................................................328

14.3

Register Description .......................................................................................................... 329

14.3.1 Receive Shift Register (SCRSR) .......................................................................... 330

14.3.2 Receive FIFO Data Register (SCFRDR) .............................................................. 330

14.3.3 Transmit Shift Register (SCTSR) ......................................................................... 330

14.3.4 Transmit FIFO Data Register (SCFTDR)............................................................. 331

14.3.5 Serial Mode Register (SCSMR)............................................................................ 331

14.3.6 Serial Control Register (SCSCR).......................................................................... 334

14.3.7 Serial Status Register (SCFSR) ............................................................................ 338

14.3.8 Bit Rate Register (SCBRR) .................................................................................. 346

14.3.9 FIFO Control Register (SCFCR) .......................................................................... 353

14.3.10 FIFO Data Count Register (SCFDR) .................................................................... 356

14.3.11 Serial Port Register (SCSPTR) ............................................................................. 357

14.3.12 Line Status Register (SCLSR) .............................................................................. 361

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