Table of Contents
About This Document .................................................................................................................... 21
Audience .............................................................................................................................................. 21
About This Manual ................................................................................................................................ 21
Related Documents ............................................................................................................................... 21
Documentation Conventions .................................................................................................................. 21
1
Architectural Overview ...................................................................................................... 23
1.1
Product Features ...................................................................................................................... 23
1.2
Target Applications .................................................................................................................... 29
1.3
High-Level Block Diagram ......................................................................................................... 30
1.4
Functional Overview .................................................................................................................. 31
1.4.1
ARM Cortex™-M3 ..................................................................................................................... 31
1.4.2
Motor Control Peripherals .......................................................................................................... 31
1.4.3
Analog Peripherals .................................................................................................................... 32
1.4.4
Serial Communications Peripherals ............................................................................................ 33
1.4.5
System Peripherals ................................................................................................................... 34
1.4.6
Memory Peripherals .................................................................................................................. 35
1.4.7
Additional Features ................................................................................................................... 36
1.4.8
Hardware Details ...................................................................................................................... 36
2
ARM Cortex-M3 Processor Core ...................................................................................... 38
2.1
Block Diagram .......................................................................................................................... 39
2.2
Functional Description ............................................................................................................... 39
2.2.1
Serial Wire and JTAG Debug ..................................................................................................... 39
2.2.2
Embedded Trace Macrocell (ETM) ............................................................................................. 40
2.2.3
Trace Port Interface Unit (TPIU) ................................................................................................. 40
2.2.4
ROM Table ............................................................................................................................... 40
2.2.5
Memory Protection Unit (MPU) ................................................................................................... 40
2.2.6
Nested Vectored Interrupt Controller (NVIC) ................................................................................ 40
3
Memory Map ....................................................................................................................... 44
4
Interrupts ............................................................................................................................ 46
5
JTAG Interface .................................................................................................................... 49
5.1
Block Diagram .......................................................................................................................... 50
5.2
Functional Description ............................................................................................................... 50
5.2.1
JTAG Interface Pins .................................................................................................................. 51
5.2.2
JTAG TAP Controller ................................................................................................................. 52
5.2.3
Shift Registers .......................................................................................................................... 53
5.2.4
Operational Considerations ........................................................................................................ 53
5.3
Initialization and Configuration ................................................................................................... 56
5.4
Register Descriptions ................................................................................................................ 56
5.4.1
Instruction Register (IR) ............................................................................................................. 56
5.4.2
Data Registers .......................................................................................................................... 58
6
System Control ................................................................................................................... 60
6.1
Functional Description ............................................................................................................... 60
6.1.1
Device Identification .................................................................................................................. 60
6.1.2
Reset Control ............................................................................................................................ 60
3
November 30, 2007
Preliminary
LM3S2965 Microcontroller