LM3S801 Data Sheet
October 8, 2006
5
Preliminary
10.5
Register Descriptions......................................................................................................................... 181
11.
Universal Asynchronous Receivers/Transmitters (UARTs).......................................... 202
11.1
Block Diagram ................................................................................................................................... 203
11.2
Functional Description ....................................................................................................................... 203
11.2.1 Transmit/Receive Logic ..................................................................................................................... 203
11.2.2 Baud-Rate Generation ....................................................................................................................... 204
11.2.3 Data Transmission ............................................................................................................................. 205
11.2.4 FIFO Operation .................................................................................................................................. 205
11.2.5 Interrupts............................................................................................................................................ 205
11.2.6 Loopback Operation .......................................................................................................................... 206
11.3
Initialization and Configuration........................................................................................................... 206
11.4
Register Map ..................................................................................................................................... 207
11.5
Register Descriptions......................................................................................................................... 208
12.
Synchronous Serial Interface (SSI) ................................................................................. 238
12.1
Block Diagram ................................................................................................................................... 238
12.2
Functional Description ....................................................................................................................... 239
12.2.1 Bit Rate Generation ........................................................................................................................... 239
12.2.2 FIFO Operation .................................................................................................................................. 239
12.2.3 Interrupts............................................................................................................................................ 239
12.2.4 Frame Formats .................................................................................................................................. 240
12.3
Initialization and Configuration........................................................................................................... 247
12.4
Register Map ..................................................................................................................................... 248
12.5
Register Descriptions......................................................................................................................... 249
13.
Inter-Integrated Circuit (I2C) Interface ............................................................................ 273
13.1
Block Diagram ................................................................................................................................... 273
13.2
Functional Description ....................................................................................................................... 273
13.2.1 I2C Bus Functional Overview ............................................................................................................. 274
13.2.2 Available Speed Modes ..................................................................................................................... 281
13.3
Initialization and Configuration........................................................................................................... 282
13.4
Register Map ..................................................................................................................................... 283
13.5
Register Descriptions (I2C Master).................................................................................................... 283
13.6
Register Descriptions (I2C Slave)...................................................................................................... 297
14.
Analog Comparators......................................................................................................... 305
14.1
Block Diagram ................................................................................................................................... 305
14.2
Functional Description ....................................................................................................................... 306
14.2.1 Internal Reference Programming....................................................................................................... 307
14.3
Initialization and Configuration........................................................................................................... 308
14.4
Register Map ..................................................................................................................................... 309
14.5
Register Descriptions......................................................................................................................... 309
15.
Pulse Width Modulator (PWM) ......................................................................................... 317
15.1
Block Diagram ................................................................................................................................... 317
15.2
Functional Description ....................................................................................................................... 317
15.2.1 PWM Timer ........................................................................................................................................ 317
15.2.2 PWM Comparators ............................................................................................................................ 318
15.2.3 PWM Signal Generator ...................................................................................................................... 319
15.2.4 Dead-Band Generator ....................................................................................................................... 320
15.2.5 Interrupt Selector ............................................................................................................................... 320
15.2.6 Synchronization Methods .................................................................................................................. 320
15.2.7 Fault Conditions ................................................................................................................................. 321