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16.8.1
Baud rate generation............................................................................................................... 444
2
C BUS ...........................................................................................................................445
17.1
17.1.1
17.1.2
17.1.3
17.2
Features..................................................................................................................................448
17.3
Configuration .........................................................................................................................451
17.4
Control Registers ..................................................................................................................453
2
17.5
C Bus Mode Functions........................................................................................................468
17.5.1
Pin configuration...................................................................................................................... 468
2
17.6
C Bus Definitions and Control Methods ...........................................................................469
17.6.1
Start condition ......................................................................................................................... 469
17.6.2
Addresses ............................................................................................................................... 470
17.6.3
Transfer direction specification ............................................................................................... 471
17.6.4
Acknowledge signal (ACK)...................................................................................................... 472
17.6.5
Stop condition.......................................................................................................................... 473
17.6.6
Wait signal (WAIT) .................................................................................................................. 474
2
17.7
C Interrupt Request Signals (INTIICn) ...............................................................................476
17.7.1
Master device operation .......................................................................................................... 476
17.7.2
17.7.3
Slave device operation (when receiving extension code) ....................................................... 483
17.7.4
Operation without communication ........................................................................................... 487
17.7.5
Arbitration loss operation (operation as slave after arbitration loss) ....................................... 487
17.7.6
Operation when arbitration loss occurs (no communication after arbitration loss).................. 489
17.8
Interrupt Request Signal (INTIICn) Generation Timing and Wait Control........................494
17.9
Address Match Detection Method .......................................................................................495
17.10 Error Detection ......................................................................................................................495
17.11 Extension Code .....................................................................................................................495
17.12 Arbitration ..............................................................................................................................496
17.13 Wakeup Function...................................................................................................................497
17.14 Communication Reservation................................................................................................498
17.14.1 When communication reservation function is enabled (IICRSVn bit of IICFn register = 0) ..... 498
17.14.2 When communication reservation function is disabled (IICRSVn bit of IICFn register = 1) .... 502
17.15 Cautions .................................................................................................................................503
17.16 Communication Operations .................................................................................................504
17.16.1 Master operation 1 .................................................................................................................. 504
17.16.2 Master operation 2 .................................................................................................................. 506
17.16.3 Slave operation ....................................................................................................................... 507
17.17 Timing of Data Communication ...........................................................................................508
CHAPTER 18 IEBus CONTROLLER ....................................................................................................515
18.1
Functions ...............................................................................................................................515
18.1.1
Communication protocol of IEBus ........................................................................................... 515
18.1.2
Determination of bus mastership (arbitration) ......................................................................... 516
2
C Bus and Other Serial Interfaces ....................................................445
2
C00 mode switching ........................................................................................ 445
2
C01 mode switching............................................................................................ 446
2
C02 mode switching ........................................................................................ 447
Preliminary User's Manual U16541EJ1V0UM
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