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TMS320x281x DSP
System Control and Interrupts
Reference Guide
Literature Number: SPRU078F
April 2002 − Revised May 2009
iiiRead This First
Preface
Read This First
About This Manual
This guide describes how various 281x digital signal processor (DSP) system controls and interrupts
work with peripherals. It includes information on the:
- Flash and one-time programmable (OTP) memories
- Code security module (CSM), which is a security feature incorporated in
28x devices
- Clocking mechanisms including the oscillator, PLL, the watchdog function,
and the low-power modes
- GPIO MUX registers used to select the operation of shared pins
- Peripheral frames and the device emulation registers
- Peripheral interrupt expansion (PIE) block that multiplexes numerous
interrupt sources into a smaller set of interrupt inputs
Related Documentation From Texas Instruments
The following books describe the TMS320x281x and related support tools that
are available on the TI website.
TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810,
TMS320C2811, and TMS320C2812 Digital Signal Processors
(literature number SPRS174) data sheet contains the electrical and
timing specifications for these devices, as well as signal descriptions and
pinouts for all of the available packages.
TMS320R2811 and TMS320R2812 Digital Signal Processors (literature
number SPRS257) data sheet contains the electrical and timing
specifications for these devices, as well as signal descriptions and
pinouts for all of the available packages.
TMS320C28x DSP CPU and Instruction Set Reference Guide (literature
number SPRU430) describes the central processing unit (CPU) and the
assembly language instructions of the TMS320C28x™ fixed-point digital
signal processors (DSPs). It also describes emulation features available
on these DSPs.
序文
时钟机制
GPIO功能选择寄存器
复用
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结构
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多个
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叙述的
本页已使用福昕阅读器进行编辑。
福昕软件(C)2005-2010,版权所有,
仅供试用。
Related Documentation From Texas Instruments
iv
TMS320x281x Analog-to-Digital Converter (ADC) Reference Guide (liter-
ature number SPRU060) describes the ADC module. The module is a
12−bit pipelined ADC. The analog circuits of this converter, referred to
as the core in this document, include the front-end analog multiplexers
(MUXs), sample−and−hold (S/H) circuits, the conversion core, voltage
regulators, and other analog supporting circuits. Digital circuits, referred
to as the wrapper in this document, include programmable conversion
sequencer, result registers, interface to analog circuits, interface to de-
vice peripheral bus, and interface to other on-chip modules.
TMS320x281x Boot ROM Reference Guide (literature number SPRU095)
describes the purpose and features of the bootloader (factory-pro-
grammed boot-loading software). It also describes other contents of the
device on-chip boot ROM and identifies where all of the information is lo-
cated within that memory.
TMS320x281x Event Manager (EV) Reference Guide (literature number
SPRU065) describes the EV modules that provide a broad range of func-
tions and features that are particularly useful in motion control and motor
control applications. The EV modules include general-purpose (GP) tim-
ers, full-compare/PWM units, capture units, and quadrature-encoder
pulse (QEP) circuits.
TMS320x281x External Interface (XINTF) Reference Guide (literature
number SPRU067) describes the external interface (XINTF) of the 28x
digital signal processors (DSPs).
TMS320x281x Multi-channel Buffered Serial Ports (McBSPs) Reference
Guide (literature number SPRU061) describes the McBSP) available on
the C28x devices. The McBSPs allow direct interface between a DSP
and other devices in a system.
TMS320x28xx, 28xxx Enhanced Controller Area Network (eCAN) Refer-
ence Guide (literature number SPRU074) describes the eCAN that uses
established protocol to communicate serially with other controllers in
electrically noisy environments. With 32 fully configurable mailboxes and
time-stamping feature, the eCAN module provides a versatile and robust
serial communication interface. The eCAN module implemented in the
C28x DSP is compatible with the CAN 2.0B standard (active).
TMS320x28xx, 28xxx Peripheral Reference Guide (literature number
SPRU566) describes the peripheral reference guides of the 28x digital
signal processors (DSPs).
TMS320x28xx, 28xxx Serial Communication Interface (SCI) Reference
Guide (literature number SPRU051) describes the SCI that is a two-wire
Related Documentation From Texas Instruments
vRead This First
asynchronous serial port, commonly known as a UART. The SCI mod-
ules support digital communications between the CPU and other asyn-
chronous peripherals that use the standard non-return-to-zero (NRZ)
format.
TMS320x28xx, 280xxx Serial Peripheral Interface (SPI) Reference Guide
(literature number SPRU059) describes the SPI − a high-speed synchro-
nous serial input/output (I/O) port that allows a serial bit stream of pro-
grammed length (one to sixteen bits) to be shifted into and out of the de-
vice at a programmed bit-transfer rate. The SPI is used for communica-
tions between the DSP controller and external peripherals or another
controller.
The TMS320C28x Instruction Set Simulator Technical Overview (litera-
ture number SPRU608) describes the simulator, available within the
Code Composer Studio for TMS320C2000 IDE, that simulates the in-
struction set of the C28x core.
TMS320C28x DSP/BIOS Application Programming Interface (API) Refer-
ence Guide (literature number SPRU625) describes development using
DSP/BIOS.
3.3 V DSP for Digital Motor Control Application Report (literature num-
ber SPRA550) describes a scenario of a 3.3-V-only motor controller
indicating that for most applications, no significant issue of interfacing
between 3.3 V and 5 V exists. On-chip 3.3-V analog-to-digital convert-
er (ADC) versus 5-V ADC is also discussed. Guidelines for compo-
nent layout and printed circuit board (PCB) design that can reduce
system noise and EMI effects are summarized.
Thermo-Electric Cooler Control Using a TMS320F2812 DSP & DRV592
(literature number SPRA873) presents a thermoelectric cooler system
consisting of a Texas Instruments TMS320F2812 digital signal proces-
sor (DSP) and DRV592 power amplifier. The DSP implements a digital
proportional-integral-derivative feedback controller using an integrated
12-bit analog-to-digital converter to read the thermistor, and direct out-
put of pulse-width-modulated waveforms to the H-bridge DRV592
power amplifier. A complete description of the experimental system,
along with software and software operating instructions, is provided.
Running an Application from Internal Flash Memory on the
TMS320F281x DSP Application Report (literature number
SPRA958) covers the requirements needed to properly configure ap-
plication software for execution from on-chip flash memory. Require-
ments for both DSP/BIOS and non-DSP/BIOS projects are presented.
Example code projects are included.
vi
Trademarks
Code Composer Studio and C28x are trademarks of Texas Instruments.
本页已使用福昕阅读器进行编辑。
福昕软件(C)2005-2009,版权所有,
仅供试用。
本页已使用福昕阅读器进行编辑。
福昕软件(C)2005-2010,版权所有,
仅供试用。
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