SPRUIY2
November 2024
F29H850TU
,
F29H859TU-Q1
1
Read This First
About This Manual
Related Documentation from Texas Instruments
Glossary
Support Resources
Trademarks
1
Architecture Overview
1.1
Introduction to the CPU
1.2
Data Type
1.3
C29x CPU System Architecture
1.3.1
Emulation Logic
1.3.2
CPU Interface Buses
1.4
Memory Map
2
Central Processing Unit (CPU)
2.1
C29x CPU Architecture
2.1.1
Features
2.1.2
Block Diagram
2.2
CPU Registers
2.2.1
Addressing Registers (Ax/XAx)
2.2.2
Fixed-Point Registers (Dx/XDx)
2.2.3
Floating Point Register (Mx/XMx)
2.2.4
Program Counter (PC)
2.2.5
Return Program Counter (RPC)
2.2.6
Status Registers
2.2.6.1
Interrupt Status Register (ISTS)
2.2.6.2
Decode Phase Status Register (DSTS)
2.2.6.3
Execute Phase Status Register (ESTS)
2.3
Instruction Packing
2.3.1
Standalone Instructions and Restrictions
2.3.2
Instruction Timeout
2.4
Stacks
2.4.1
Software Stack
2.4.2
Protected Call Stack
2.4.3
Real Time Interrupt / NMI Stack
3
Interrupts
3.1
CPU Interrupts Architecture Block Diagram
3.2
RESET, NMI, RTINT, and INT
3.2.1
RESET (CPU reset)
3.2.2
NMI (Non-Maskable Interrupt)
3.2.3
RTINT (Real Time Interrupt)
3.2.4
INT (Low-Priority Interrupt)
3.3
Conditions Blocking Interrupts
3.3.1
ATOMIC Counter
3.4
CPU Interrupt Control Registers
3.4.1
Interrupt Status Register (ISTS)
3.4.2
Decode Phase Status Register (DSTS)
3.4.3
Interrupt-Related Stack Registers
3.5
Interrupt Nesting
3.5.1
Interrupt Nesting Example Diagram
3.6
Security
3.6.1
Overview
3.6.2
LINK
3.6.3
STACK
3.6.4
ZONE
4
Pipeline
4.1
Introduction
4.2
Decoupled Pipeline Phases
4.3
Dual Instruction Prefetch Buffers
4.4
Pipeline Advancement and Stalls
4.5
Pipeline Hazards and Protection Mechanisms
4.6
Register Updates and Corresponding Pipeline Phases
4.7
Register Reads and Writes During Normal Operation
4.8
D2 Read Protection
4.9
E1 Read Protection
4.10
WAW Protection
4.11
Protection During Interrupt
5
Addressing Modes
5.1
Addressing Modes Overview
5.1.1
Documentation and Implementation
5.1.2
List of Addressing Mode Types
5.1.2.1
Additional Types of Addressing
5.1.3
Addressing Modes Summarized
5.2
Addressing Mode Fields
5.2.1
ADDR1 Field
5.2.2
ADDR2 Field
5.2.3
ADDR3 Field
5.2.4
DIRM Field
5.2.5
Additional Fields
5.3
Alignment and Pipeline Considerations
5.3.1
Alignment
5.3.2
Pipeline Considerations
5.4
Types of Addressing Modes
5.4.1
Direct Addressing
5.4.2
Pointer Addressing
5.4.2.1
Pointer Addressing with #Immediate Offset
5.4.2.2
Pointer Addressing with Pointer Offset
5.4.2.3
Pointer Addressing with #Immediate Increment/Decrement
5.4.2.4
Pointer Addressing with Pointer Increment/Decrement
5.4.3
Stack Addressing
5.4.3.1
Allocating and De-allocating Stack Space
5.4.4
Circular Addressing Instruction
5.4.5
Bit Reversed Addressing Instruction
6
Safety and Security Unit (SSU)
6.1
SSU Overview
6.2
Links and Task Isolation
6.3
Sharing Data Outside Task Isolation Boundary
6.4
Protected Call and Return
7
Emulation
7.1
Overview of Emulation Features
7.2
Debug Terminology
7.3
Debug Interface
7.4
Execution Control Mode
7.5
Breakpoints, Watchpoints, and Counters
7.5.1
Software Breakpoint
7.5.2
Hardware Debugging Resources
7.5.2.1
Hardware Breakpoint
7.5.2.2
Hardware Watchpoint
7.5.2.3
Benchmark Counters
7.5.3
PC Trace
8
Revision History
Glossary
TI Glossary
This glossary lists and explains terms, acronyms, and definitions.