Rainbow Electronics AT89C5122 - Manual (Page 211)

211
4202E–SCR–06/06
AT8xC5122/23
Definitions ........................................................................................................... 65
Functional Description ........................................................................................ 67
Additional Features............................................................................................. 74
Alternate Card..................................................................................................... 78
Registers ............................................................................................................. 78
DC/DC Converter................................................................................................ 88
USB Controller .................................................................................... 95
Description.......................................................................................................... 96
Configuration ...................................................................................................... 99
Read/Write Data FIFO ...................................................................................... 102
Bulk / Interrupt Transactions............................................................................. 103
Control Transactions......................................................................................... 107
Isochronous Transactions................................................................................. 108
Miscellaneous ................................................................................................... 110
Suspend/Resume Management .......................................................................111
Detach Simulation............................................................................................. 114
USB Interrupt System ....................................................................................... 115
Registers........................................................................................................... 117
Serial I/O Port .................................................................................... 126
Framing Error Detection ................................................................................... 126
Automatic Address Recognition........................................................................ 127
Asynchronous Modes (Modes 1, 2 and 3) ........................................................ 131
Modes 2 and 3 .................................................................................................. 132
Registers........................................................................................................... 135
Serial Port Interface (SPI) ................................................................ 137
Features............................................................................................................ 137
Signal Description............................................................................................. 137
Functional Description ...................................................................................... 139
Timers/Counters ............................................................................... 147
Timer/Counter Operations ................................................................................ 147
Timer 0.............................................................................................................. 147
Timer 1.............................................................................................................. 150
Registers........................................................................................................... 152
Keyboard Interface ........................................................................... 155
Introduction ....................................................................................................... 155
Description........................................................................................................ 155
Registers........................................................................................................... 156
Interrupt System ............................................................................... 159
Introduction ....................................................................................................... 159
Interrupt System Description ............................................................................ 159