SPRUIX1B October 2022 – April 2024 TMS320F2800132 , TMS320F2800133 , TMS320F2800135 , TMS320F2800137
This Technical Reference Manual (TRM) details the integration, the environment, the functional description, and the programming models for each peripheral and subsystem in the device.
The TRM should not be considered a substitute for the data manual, rather a companion guide that should be used alongside the device-specific data manual to understand the details to program the device. The primary purpose of the TRM is to abstract the programming details of the device from the data manual. This allows the data manual to outline the high-level features of the device without unnecessary information about register descriptions or programming models.
This document uses the following conventions.
For a complete listing of related documentation and development-support tools for these devices, visit the Texas Instruments website at www.ti.com.
Additionally, the TMS320C28x DSP CPU and Instruction Set Reference Guide and the TMS320C28x Floating Point Unit and Instruction Set Reference Guide must be used in conjunction with this TRM.
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This chapter discusses the C2000Ware for the C2000™ microcontrollers. The C2000Ware can be downloaded from: www.ti.com/tool/C2000WARE
C2000Ware for the C2000™ microcontrollers is a cohesive set of development software and documentation designed to minimize software development time. From device-specific drivers and libraries to device peripheral examples, C2000Ware provides a solid foundation to begin development and evaluation of your product.
C2000Ware can be downloaded from: www.ti.com/tool/C2000WARE
The C2000Ware software package is organized into the following directory structure as shown in Table 1-1.
Directory Name | Description |
---|---|
boards | Contains the hardware design schematics, BOM, Gerber files, and documentation for C2000 controlCARDS. |
device_support | Contains all device-specific support files, bit field headers and device development user's guides. |
docs | Contains the C2000Ware package user's guides and the HTML index page of all package documentation. |
driverlib | Contains the device-specific driver library and driver-based peripheral examples. |
libraries | Contains the device-specific and core libraries. |
Within C2000Ware, there is an extensive amount of development documentation ranging from board design documentation, to library user's guides, to driver API documentation. The "boards" directory contains all the hardware design, BOM, Gerber files, and more for controlCARDs. To assist with locating the necessary documentation, an HTML page is provided that contains a full list of all the documents in the C2000Ware package. Locate this page in the "docs" directory.
C2000Ware contains the necessary software and documentation to jumpstart development for C2000™ microcontrollers. Each device includes device-specific common source files, peripheral example projects, bit field headers, and if available, a device peripheral driver library. Additionally, documentation is provided for each device on how to set up a CCS project, as well as give an overview of all the included example projects and assist with troubleshooting. For devices with a driver library, documentation is also included that details all the peripheral APIs available.
To learn more about C2000™ microcontrollers, visit: www.ti.com/c2000.
The libraries included in C2000Ware range from fixed-point and floating-point math libraries, to specialized DSP libraries, as well as calibration libraries. Each library includes documentation and examples, where applicable. Additionally, the Flash API files and boot ROM source code are located in the "libraries" directory.
Code Composer Studio™ is an integrated development environment (IDE) that supports TI's microcontroller and embedded processors portfolio. The Code Composer Studio™ IDE comprises a suite of tools used to develop and debug embedded applications. The latest version of Code Composer Studio™ IDE can be obtained at: www.ti.com/ccstudio
All projects and examples in C2000Ware are built for and tested with the Code Composer Studio™ IDE. Although the Code Composer Studio™ IDE is not included with the C2000Ware installer, Code Composer Studio™ IDE is easily obtainable in a variety of versions.
To help simplify configuration challenges and accelerate software development, Texas Instruments™ created SysConfig, an intuitive and comprehensive collection of graphical utilities for configuring pins, peripherals, subsystems, and other components. SysConfig helps you manage, expose, and resolve conflicts visually so that you have more time to create differentiated applications.
The tool's output includes C header and code files that can be used with C2000Ware examples or used to configure custom software.
The SysConfig tool automatically selects the pinmux settings that satisfy the entered requirements. The SysConfig tool is delivered integrated in the Code Composer Studio™ IDE, in the C2000Ware GPIO example, as a standalone installer, or can be used by way of the cloud tools portal at: dev.ti.com
This chapter contains a short description of the C28x processor and extended instruction sets.
Further information can be found in the following documents:
The C28x CPU is a 32-bit fixed-point processor. This device draws from the best features of digital signal processing, reduced instruction set computing (RISC), microcontroller architectures, firmware, and tool sets.
For more information on CPU architecture and instruction set, see the TMS320C28x CPU and Instruction Set Reference Guide.
The CPU features include a modified Harvard architecture and circular addressing. The RISC features are single-cycle instruction execution, register-to-register operations, and modified Harvard architecture. The microcontroller features include ease of use through an intuitive instruction set, byte packing and unpacking, and bit manipulation. The modified Harvard architecture of the CPU enables instruction and data fetches to be performed in parallel. The CPU can read instructions and data while it writes data simultaneously to maintain the single-cycle instruction operation across the pipeline.
The C28x plus floating-point (C28x+FPU) processor extends the capabilities of the C28x fixed-point CPU by adding registers and instructions to support IEEE single-precision floating point operations.
Devices with the C28x+FPU include the standard C28x register set plus an additional set of floating-point unit registers. The additional floating-point unit registers are the following:
All of the floating-point registers, except the repeat block register, are shadowed. This shadowing can be used in high-priority interrupts for fast context save and restore of the floating-point registers.
For more information, see the TMS320C28x Extended Instruction Sets Technical Reference Manual.
The trigonometric math unit (TMU) extends the capabilities of a C28x+FPU by adding instructions and leveraging existing FPU instructions to speed up the execution of common trigonometric and arithmetic operations listed in Table 2-1.
Instructions | C Equivalent Operation | Pipeline Cycles |
---|---|---|
MPY2PIF32 RaH,RbH | a = b * 2pi | 2/3 |
DIV2PIF32 RaH,RbH | a = b / 2pi | 2/3 |
DIVF32 RaH,RbH,RcH | a = b/c | 5 |
SQRTF32 RaH,RbH | a = sqrt(b) | 5 |
SINPUF32 RaH,RbH | a = sin(b*2pi) | 4 |
COSPUF32 RaH,RbH | a = cos(b*2pi) | 4 |
ATANPUF32 RaH,RbH | a = atan(b)/2pi | 4 |
QUADF32 RaH,RbH,RcH,RdH | Operation to assist in calculating ATANPU2 | 5 |
No changes have been made to existing instructions, pipeline, or memory bus architecture. All TMU instructions use the existing FPU register set (R0H to R7H) to carry out the operations.
For more information, see the TMS320C28x Extended Instruction Sets Technical Reference Manual.
The system-level functionality of this microcontroller configures the clocking, resets, and interrupts of the CPU and peripherals, as well as the operation of the on-chip memories, timers, and security features.
System-level configuration is controlled by a group of submodules that are collectively referred to as the system control module. The system control module provides the following capabilities:
Several system configuration registers are protected from spurious CPU writes by “LOCK” registers. Once these associated LOCK register bits are set, the respective locked registers can no longer be modified by software. See the register descriptions for details.
Some registers in the system are protected from spurious CPU writes by the EALLOW protection mechanism. This uses the special CPU instructions EALLOW and EDIS to enable and disable access to protected registers. The current protection state is given by the EALLOW bit in the CPU ST1 register, as shown in Table 3-1.
Register protection is enabled by default at startup. While protected, all writes to protected registers by the CPU are ignored. Only CPU reads, JTAG reads, and JTAG writes are allowed. If protection is disabled by executing the EALLOW instruction, the CPU is allowed to write freely to protected registers. After modifying registers, the registers can once again be protected by executing the EDIS instruction to clear the EALLOW bit.
Writes to the clock configuration and peripheral clock enable registers can be disabled until the next reset by writing to special lock registers.
EALLOW Bit | CPU Writes | CPU Reads | JTAG Writes | JTAG Reads |
---|---|---|---|---|
0 | Ignored | Allowed(1) | Allowed | Allowed |
1 | Allowed | Allowed | Allowed | Allowed |
The TMS320F280013x MCU 1.2V core is powered up internally with the LDO (VREG). VREG power is derived from the 3.3V rail so this device can support a single 3.3V rail operation.
The device identification registers and configuration registers provide information on the part number, product family, revision, pin count, qualification status, and feature availability of the device.
All of the device information is part of the DEV_CFG_REGS space. The identification registers are PARTIDL, PARTIDH, and REVID.
A 256-bit Unique ID (UID) is available in UID_REGS. The 256 bits are separated into these registers:
This section explains the types and effects of the different resets on this device.