Manual

vii
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
33.7 Serial Peripheral Interface (SPI) User Interface .................................470
34 Two-wire Interface (TWI) .........................................................483
34.1 Description .........................................................................................483
34.2 List of Abbreviations ...........................................................................484
34.3 Block Diagram ....................................................................................484
34.4 Application Block Diagram .................................................................485
34.5 Product Dependencies .......................................................................485
34.6 Functional Description ........................................................................486
34.7 Master Mode ......................................................................................487
34.8 Multi-master Mode ..............................................................................499
34.9 Slave Mode ........................................................................................502
34.10 Two-wire Interface (TWI) User Interface .........................................510
35 Universal Synchronous/Asynchronous Receiver/Transceiver 525
35.1 Description .........................................................................................525
35.2 Block Diagram ....................................................................................526
35.3 Application Block Diagram .................................................................527
35.4 I/O Lines Description .........................................................................527
35.5 Product Dependencies .......................................................................528
35.6 Functional Description ........................................................................529
35.7 USART User Interface .......................................................................559
36 Serial Synchronous Controller (SSC) ....................................579
36.1 Description .........................................................................................579
36.2 Block Diagram ....................................................................................580
36.3 Application Block Diagram .................................................................580
36.4 Pin Name List .....................................................................................581
36.5 Product Dependencies .......................................................................581
36.6 Functional Description ........................................................................581
36.7 SSC Application Examples .................................................................592
36.8 Synchronous Serial Controller (SSC) User Interface .........................594
37 AC’97 Controller (AC’97C) ......................................................617
37.1 Description .........................................................................................617
37.2 Block Diagram ....................................................................................618
37.3 Pin Name List .....................................................................................619
37.4 Application Block Diagram .................................................................619
37.5 Product Dependencies .......................................................................620