21.13 Registers description .......................................................................................262
21.14 USB Software Operating modes ......................................................................267
22 USB Device Operating modes ............................................................ 269
22.1 Introduction ......................................................................................................269
22.2 Power-on and reset ..........................................................................................269
22.3 Speed identification on startup .........................................................................269
22.4 Endpoint reset ..................................................................................................270
22.5 USB reset .........................................................................................................270
22.6 Endpoint selection ............................................................................................270
22.7 Endpoint activation ...........................................................................................270
22.8 Address Setup .................................................................................................271
22.9 Suspend, Wake-up and Resume .....................................................................272
22.10 Detach ..............................................................................................................272
22.11 Remote Wake-up .............................................................................................273
22.12 STALL request .................................................................................................273
22.13 CONTROL endpoint management ...................................................................274
22.14 OUT endpoint management .............................................................................275
22.15 IN endpoint management .................................................................................277
22.16 Isochronous mode ...........................................................................................278
22.17 Overflow ...........................................................................................................279
22.18 Interrupts ..........................................................................................................279
22.19 Registers ..........................................................................................................281
23 USB Host Operating Modes ................................................................ 293
23.1 Pipe description ...............................................................................................293
23.2 Detach ..............................................................................................................293
23.3 Power-on and Reset ........................................................................................293
23.4 Device Detection ..............................................................................................294
23.5 Pipe Selection ..................................................................................................294
23.6 Pipe Configuration ...........................................................................................294
23.7 USB Reset .......................................................................................................296
23.8 Address Setup .................................................................................................296
23.9 Remote Wake-Up detection .............................................................................296
23.10 USB Pipe Reset ...............................................................................................296
23.11 Pipe Data Access .............................................................................................296
23.12 Control Pipe management ...............................................................................297
5
AT90USB64/128
7593A–AVR–02/06
ATMEL [ ATMEL ]
