Silicon Laboratories C8051F341 Product Manual page 5

14.5.1.System Clock Selection ......................................................................... 139
14.5.2.USB Clock Selection .............................................................................. 139
15. Port Input/Output.................................................................................................. 142
15.1.Priority Crossbar Decoder .............................................................................. 144
15.2.Port I/O Initialization ....................................................................................... 147
15.3.General Purpose Port I/O ............................................................................... 150
16. Universal Serial Bus Controller (USB0).............................................................. 159
16.1.Endpoint Addressing ...................................................................................... 160
16.2.USB Transceiver ............................................................................................ 160
16.3.USB Register Access ..................................................................................... 162
16.4.USB Clock Configuration................................................................................ 166
16.5.FIFO Management ......................................................................................... 167
16.5.1.FIFO Split Mode ..................................................................................... 167
16.5.2.FIFO Double Buffering ........................................................................... 168
16.5.3.FIFO Access .......................................................................................... 168
16.6.Function Addressing....................................................................................... 169
16.7.Function Configuration and Control................................................................ 169
16.8.Interrupts ........................................................................................................ 172
16.9.The Serial Interface Engine ............................................................................ 176
16.10.Endpoint0 ..................................................................................................... 176
16.10.1.Endpoint0 SETUP Transactions .......................................................... 177
16.10.2.Endpoint0 IN Transactions................................................................... 177
16.10.3.Endpoint0 OUT Transactions............................................................... 178
16.11.Configuring Endpoints1-3 ............................................................................. 180
16.12.Controlling Endpoints1-3 IN.......................................................................... 180
16.12.1.Endpoints1-3 IN Interrupt or Bulk Mode............................................... 180
16.12.2.Endpoints1-3 IN Isochronous Mode..................................................... 181
16.13.Controlling Endpoints1-3 OUT...................................................................... 183
16.13.1.Endpoints1-3 OUT Interrupt or Bulk Mode........................................... 183
16.13.2.Endpoints1-3 OUT Isochronous Mode................................................. 184
17. SMBus ................................................................................................................... 188
17.1.Supporting Documents ................................................................................... 189
17.2.SMBus Configuration...................................................................................... 189
17.3.SMBus Operation ........................................................................................... 189
17.3.1.Arbitration............................................................................................... 190
17.3.2.Clock Low Extension.............................................................................. 191
17.3.3.SCL Low Timeout................................................................................... 191
17.3.4.SCL High (SMBus Free) Timeout .......................................................... 191
17.4.Using the SMBus............................................................................................ 191
17.4.1.SMBus Configuration Register............................................................... 192
17.4.2.SMB0CN Control Register ..................................................................... 195
17.4.3.Data Register ......................................................................................... 198
17.5.SMBus Transfer Modes.................................................................................. 198
17.5.1.Master Transmitter Mode ....................................................................... 198
17.5.2.Master Receiver Mode ........................................................................... 200
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
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