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12.8.6 SCI Operations during Mode Transitions ............................................................ 273
12.8.7 Switching from SCK Pins to Port Pins ................................................................ 276
2
13.1 Features............................................................................................................................. 277
13.2 Input/Output Pins .............................................................................................................. 280
13.3 Register Descriptions ........................................................................................................ 281
2
13.3.1 I
C Bus Data Register (ICDR) ............................................................................. 282
13.3.2 Slave Address Register (SAR)............................................................................. 283
13.3.3 Second Slave Address Register (SARX) ............................................................. 284
2
13.3.4 I
C Bus Mode Register (ICMR)........................................................................... 286
2
13.3.5 I
C Bus Control Register (ICCR)......................................................................... 289
2
13.3.6 I
C Bus Status Register (ICSR)............................................................................ 297
13.3.7 DDC Switch Register (DDCSWR) ...................................................................... 301
2
13.3.8 I
C Bus Extended Control Register (ICXR)......................................................... 302
13.3.9 Port G Control Register (PGCTL) ....................................................................... 306
13.4 Operation .......................................................................................................................... 307
2
13.4.1 I
C Bus Data Format ............................................................................................ 307
13.4.2 Initialization ......................................................................................................... 309
13.4.3 Master Transmit Operation .................................................................................. 309
13.4.4 Master Receive Operation.................................................................................... 314
13.4.5 Slave Receive Operation...................................................................................... 321
13.4.6 Slave Transmit Operation .................................................................................... 328
13.4.7 IRIC Setting Timing and SCL Control ................................................................ 331
13.4.8 Noise Canceller.................................................................................................... 334
13.4.9 Initialization of Internal State .............................................................................. 335
13.5 Interrupt Sources............................................................................................................... 336
13.6 Usage Notes ...................................................................................................................... 337
13.6.1 Module Stop Mode Setting .................................................................................. 347
Section 14 Keyboard Buffer Controller.............................................................349
14.1 Features............................................................................................................................. 349
14.2 Input/Output Pins .............................................................................................................. 350
14.3 Register Descriptions ........................................................................................................ 351
14.3.1 Keyboard Control Register H (KBCRH) ............................................................. 351
14.3.2 Keyboard Control Register L (KBCRL) .............................................................. 353
14.3.3 Keyboard Data Buffer Register (KBBR) ............................................................. 354
14.4 Operation .......................................................................................................................... 355
14.4.1 Receive Operation................................................................................................ 355
14.4.2 Transmit Operation .............................................................................................. 356
14.4.3 Receive Abort ...................................................................................................... 359
14.4.4 KCLKI and KDI Read Timing............................................................................. 361
14.4.5 KCLKO and KDO Write Timing......................................................................... 361
Rev. 1.00, 05/04, page xvii of xxxiv
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