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Intel® PXA255 Processor Developer’s Manual xv
Contents
9-3 START and STOP Conditions ...................................................................................................9-6
9-4 Data Format of First Byte in Master Transaction.......................................................................9-8
9-5 Acknowledge on the I2C Bus.....................................................................................................9-9
9-6 Clock Synchronization During the Arbitration Procedure.........................................................9-10
9-7 Arbitration Procedure of Two Masters .....................................................................................9-11
9-8 Master-Receiver Read from Slave-Transmitter .......................................................................9-14
9-9 Master-Receiver Read from Slave-Transmitter / Repeated Start / Master-
Transmitter Write to Slave-Receiver........................................................................................9-14
9-10 A Complete Data Transfer.......................................................................................................9-14
9-11 Master-Transmitter Write to Slave-Receiver............................................................................9-16
9-12 Master-Receiver Read to Slave-Transmitter ...........................................................................9-16
9-13 Master-Receiver Read to Slave-Transmitter, Repeated START, Master-
Transmitter Write to Slave-Receiver........................................................................................9-16
9-14 General Call Address...............................................................................................................9-17
10-1 Example UART Data Frame....................................................................................................10-4
10-2 Example NRZ Bit Encoding – (0b0100 1011...........................................................................10-5
10-3 IR Transmit and Receive Example ........................................................................................10-25
10-4 XMODE Example...................................................................................................................10-25
11-1 4PPM Modulation Encodings...................................................................................................11-2
11-2 4PPM Modulation Example .....................................................................................................11-2
11-3 Frame Format for IrDA Transmission (4.0 Mbps)....................................................................11-3
12-1 NRZI Bit Encoding Example ....................................................................................................12-4
12-2 Self-Powered Device .............................................................................................................12-11
13-1 Data Transfer Through the AC-link..........................................................................................13-3
13-2 AC’97 Standard Bidirectional Audio Frame .............................................................................13-4
13-3 AC-link Audio Output Frame....................................................................................................13-5
13-4 Start of Audio Output Frame....................................................................................................13-5
13-5 AC’97 Input Frame...................................................................................................................13-9
13-6 Start of an Audio Input Frame..................................................................................................13-9
13-7 AC-link Powerdown Timing....................................................................................................13-12
13-8 SDATA_IN Wake Up Signaling..............................................................................................13-13
13-9 PCM Transmit and Receive Operation..................................................................................13-27
13-10 Mic-in Receive-Only Operation..............................................................................................13-29
13-11 Modem Transmit and Receive Operation..............................................................................13-32
14-1 I2S Data Formats (16 bits).......................................................................................................14-7
14-2 MSB-Justified Data Formats (16 bits.......................................................................................14-7
14-3 Transmit and Receive FIFO Accesses Through the SADR...................................................14-15
15-1 MMC System Interaction .........................................................................................................15-1
15-2 MMC Mode Operation Without Data Token.............................................................................15-3
15-3 MMC Mode Operation With Data Token..................................................................................15-3
15-4 SPI Mode Operation Without Data Token ...............................................................................15-4
15-5 SPI Mode Read Operation.......................................................................................................15-4
15-6 SPI Mode Write Operation.......................................................................................................15-4
16-1 Texas Instruments Synchronous Serial Frame* Protocol (multiple transfers) .........................16-5
16-2 Texas Instruments Synchronous Serial Frame* Protocol (single transfers) ............................16-6
16-3 Motorola SPI* Frame Protocol (multiple transfers) ..................................................................16-7
16-4 Motorola SPI* Frame Protocol (single transfers) .....................................................................16-7
16-5 Motorola SPI* Frame Protocols for SPO and SPH Programming (multiple transfers).............16-8
16-6 Motorola SPI* Frame Protocols for SPO and SPH Programming (single transfers)................16-9
16-7 National Semiconductor Microwire* Frame Protocol (multiple transfers) ..............................16-10