SPRS357D August   2006  – June 2020 TMS320F28044

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
    1. 3.1 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagrams
    2. 4.2 Signal Descriptions
  5. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings – Commercial
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Power Consumption Summary
      1. Table 5-1 TMS320F28044 Current Consumption by Power-Supply Pins at 100-MHz SYSCLKOUT
      2. 5.4.1     Reducing Current Consumption
    5. 5.5  Electrical Characteristics
    6. 5.6  Thermal Resistance Characteristics for F28044 100-Ball GGM Package
    7. 5.7  Thermal Resistance Characteristics for F28044 100-Pin PZ Package
    8. 5.8  Thermal Design Considerations
    9. 5.9  Timing and Switching Characteristics
      1. 5.9.1 Timing Parameter Symbology
        1. 5.9.1.1 General Notes on Timing Parameters
        2. 5.9.1.2 Test Load Circuit
        3. 5.9.1.3 Device Clock Table
          1. Table 5-3 TMS320x280x Clock Table and Nomenclature
      2. 5.9.2 Power Sequencing
        1. 5.9.2.1   Power Management and Supervisory Circuit Solutions
        2. Table 5-5 Reset (XRS) Timing Requirements
      3. 5.9.3 Clock Requirements and Characteristics
        1. Table 5-6 Input Clock Frequency
        2. Table 5-7 XCLKIN Timing Requirements - PLL Enabled
        3. Table 5-8 XCLKIN Timing Requirements - PLL Disabled
        4. Table 5-9 XCLKOUT Switching Characteristics (PLL Bypassed or Enabled)
      4. 5.9.4 Peripherals
        1. 5.9.4.1 General-Purpose Input/Output (GPIO)
          1. 5.9.4.1.1 GPIO - Output Timing
            1. Table 5-10 General-Purpose Output Switching Characteristics
          2. 5.9.4.1.2 GPIO - Input Timing
            1. Table 5-11 General-Purpose Input Timing Requirements
          3. 5.9.4.1.3 Sampling Window Width for Input Signals
          4. 5.9.4.1.4 Low-Power Mode Wakeup Timing
            1. Table 5-12 IDLE Mode Timing Requirements
            2. Table 5-13 IDLE Mode Switching Characteristics
            3. Table 5-14 STANDBY Mode Timing Requirements
            4. Table 5-15 STANDBY Mode Switching Characteristics
            5. Table 5-16 HALT Mode Timing Requirements
            6. Table 5-17 HALT Mode Switching Characteristics
        2. 5.9.4.2 Enhanced Control Peripherals
          1. 5.9.4.2.1 Enhanced Pulse Width Modulator (ePWM) Timing
            1. Table 5-18 ePWM Timing Requirements
            2. Table 5-19 ePWM Switching Characteristics
          2. 5.9.4.2.2 Trip-Zone Input Timing
            1. Table 5-20 Trip-Zone input Timing Requirements
          3. 5.9.4.2.3 High-Resolution PWM Timing
            1. Table 5-21 High Resolution PWM Characteristics at SYSCLKOUT = (60 - 100 MHz)
          4. 5.9.4.2.4 ADC Start-of-Conversion Timing
            1. Table 5-22 External ADC Start-of-Conversion Switching Characteristics
        3. 5.9.4.3 External Interrupt Timing
          1. Table 5-23 External Interrupt Timing Requirements
          2. Table 5-24 External Interrupt Switching Characteristics
        4. 5.9.4.4 I2C Electrical Specification and Timing
          1. Table 5-25 I2C Timing
        5. 5.9.4.5 Serial Peripheral Interface (SPI) Master Mode Timing
          1. Table 5-26 SPI Master Mode External Timing (Clock Phase = 0)
          2. Table 5-27 SPI Master Mode External Timing (Clock Phase = 1)
        6. 5.9.4.6 SPI Slave Mode Timing
          1. Table 5-28 SPI Slave Mode External Timing (Clock Phase = 0)
          2. Table 5-29 SPI Slave Mode External Timing (Clock Phase = 1)
      5. 5.9.5 JTAG Debug Probe Connection Without Signal Buffering for the DSP
      6. 5.9.6 Flash Timing
        1. Table 5-30 Flash Endurance for A Temperature Material
        2. Table 5-31 Flash Parameters at 100-MHz SYSCLKOUT
        3. Table 5-32 Flash/OTP Access Timing
        4. Table 5-33 Flash Data Retention Duration
    10. 5.10 On-Chip Analog-to-Digital Converter
      1. Table 5-35 ADC Electrical Characteristics (over recommended operating conditions)
      2. 5.10.1     ADC Power-Up Control Bit Timing
        1. Table 5-36 ADC Power-Up Delays
        2. Table 5-37 Current Consumption for Different ADC Configurations (at 25-MHz ADCCLK)
      3. 5.10.2     Definitions
      4. 5.10.3     Sequential Sampling Mode (Single-Channel) (SMODE = 0)
        1. Table 5-38 Sequential Sampling Mode Timing
      5. 5.10.4     Simultaneous Sampling Mode (Dual-Channel) (SMODE = 1)
        1. Table 5-39 Simultaneous Sampling Mode Timing
      6. 5.10.5     Detailed Descriptions
  6. 6Detailed Description
    1. 6.1 Brief Descriptions
      1. 6.1.1  C28x CPU
      2. 6.1.2  Memory Bus (Harvard Bus Architecture)
      3. 6.1.3  Peripheral Bus
      4. 6.1.4  Real-Time JTAG and Analysis
      5. 6.1.5  Flash
      6. 6.1.6  M0, M1 SARAMs
      7. 6.1.7  L0, L1 SARAMs
      8. 6.1.8  Boot ROM
      9. 6.1.9  Security
      10. 6.1.10 Peripheral Interrupt Expansion (PIE) Block
      11. 6.1.11 External Interrupts (XINT1, XINT2, XNMI)
      12. 6.1.12 Oscillator and PLL
      13. 6.1.13 Watchdog
      14. 6.1.14 Peripheral Clocking
      15. 6.1.15 Low-Power Modes
      16. 6.1.16 Peripheral Frames 0, 1, 2 (PFn)
      17. 6.1.17 General-Purpose Input/Output (GPIO) Multiplexer
      18. 6.1.18 32-Bit CPU-Timers (0, 1, 2)
      19. 6.1.19 Control Peripherals
      20. 6.1.20 Serial Port Peripherals
    2. 6.2 Peripherals
      1. 6.2.1 32-Bit CPU-Timers 0/1/2
      2. 6.2.2 Enhanced PWM Modules (ePWM1–16)
      3. 6.2.3 Hi-Resolution PWM (HRPWM)
      4. 6.2.4 Enhanced Analog-to-Digital Converter (ADC) Module
        1. 6.2.4.1 ADC Connections if the ADC Is Not Used
        2. 6.2.4.2 ADC Registers
      5. 6.2.5 Serial Communications Interface (SCI) Module (SCI-A)
      6. 6.2.6 Serial Peripheral Interface (SPI) Module (SPI-A)
      7. 6.2.7 Inter-Integrated Circuit (I2C)
      8. 6.2.8 GPIO MUX
    3. 6.3 Memory Map
    4. 6.4 Register Map
      1. 6.4.1 Device Emulation Registers
    5. 6.5 Interrupts
      1. 6.5.1 External Interrupts
    6. 6.6 System Control
      1. 6.6.1 OSC and PLL Block
        1. 6.6.1.1 External Reference Oscillator Clock Option
        2. 6.6.1.2 PLL-Based Clock Module
        3. 6.6.1.3 Loss of Input Clock
      2. 6.6.2 Watchdog Block
    7. 6.7 Low-Power Modes Block
  7. 7Applications, Implementation, and Layout
    1. 7.1 TI Reference Design
  8. 8Device and Documentation Support
    1. 8.1 Getting Started
    2. 8.2 Device and Development Support Tool Nomenclature
    3. 8.3 Tools and Software
    4. 8.4 Documentation Support
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Glossary
  9. 9Mechanical, Packaging, and Orderable Information
    1. 9.1 Packaging Information

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発注情報

6.2.6 Serial Peripheral Interface (SPI) Module (SPI-A)

The F28044 device includes the four-pin serial peripheral interface (SPI) module. The SPI is a high-speed, synchronous serial I/O port that allows a serial bit stream of programmed length (one to sixteen bits) to be shifted into and out of the device at a programmable bit-transfer rate. Normally, the SPI is used for communications between the DSP controller and external peripherals or another processor. Typical applications include external I/O or peripheral expansion through devices such as shift registers, display drivers, and ADCs. Multidevice communications are supported by the master/slave operation of the SPI.

The SPI module features include:

  • Four external pins:
    • SPISOMI: SPI slave-output/master-input pin
    • SPISIMO: SPI slave-input/master-output pin
    • SPISTE: SPI slave transmit-enable pin
    • SPICLK: SPI serial-clock pin

NOTE: All four pins can be used as GPIO, if the SPI module is not used.

  • Two operational modes: master and slave

    • Baud rate: 125 different programmable rates.

    TMS320F28044 q_spibrr_prs357.gif
  • Data word length: one to sixteen data bits
  • Four clocking schemes (controlled by clock polarity and clock phase bits) include:
    • Falling edge without phase delay: SPICLK active-high. SPI transmits data on the falling edge of the SPICLK signal and receives data on the rising edge of the SPICLK signal.
    • Falling edge with phase delay: SPICLK active-high. SPI transmits data one half-cycle ahead of the falling edge of the SPICLK signal and receives data on the falling edge of the SPICLK signal.
    • Rising edge without phase delay: SPICLK inactive-low. SPI transmits data on the rising edge of the SPICLK signal and receives data on the falling edge of the SPICLK signal.
    • Rising edge with phase delay: SPICLK inactive-low. SPI transmits data one half-cycle ahead of the rising edge of the SPICLK signal and receives data on the rising edge of the SPICLK signal.
  • Simultaneous receive and transmit operation (transmit function can be disabled in software)
  • Transmitter and receiver operations are accomplished through either interrupt-driven or polled algorithms.
  • Nine SPI module control registers: Located in control register frame beginning at address 7040h.

    • NOTE

    All registers in this module are 16-bit registers that are connected to Peripheral Frame 2. When a register is accessed, the register data is in the lower byte (7–0), and the upper byte (15–8) is read as zeros. Writing to the upper byte has no effect.

Enhanced feature:

  • 16-level transmit/receive FIFO
  • Delayed transmit control

The SPI port operation is configured and controlled by the registers listed in Table 6-9.

Table 6-9 SPI-A Registers

NAME ADDRESS SIZE (x16) DESCRIPTION(1)
SPICCR 0x7040 1 SPI-A Configuration Control Register
SPICTL 0x7041 1 SPI-A Operation Control Register
SPISTS 0x7042 1 SPI-A Status Register
SPIBRR 0x7044 1 SPI-A Baud Rate Register
SPIRXEMU 0x7046 1 SPI-A Receive Emulation Buffer Register
SPIRXBUF 0x7047 1 SPI-A Serial Input Buffer Register
SPITXBUF 0x7048 1 SPI-A Serial Output Buffer Register
SPIDAT 0x7049 1 SPI-A Serial Data Register
SPIFFTX 0x704A 1 SPI-A FIFO Transmit Register
SPIFFRX 0x704B 1 SPI-A FIFO Receive Register
SPIFFCT 0x704C 1 SPI-A FIFO Control Register
SPIPRI 0x704F 1 SPI-A Priority Control Register
(1) Registers in this table are mapped to Peripheral Frame 2. This space only allows 16-bit accesses. 32-bit accesses produce undefined results.

Figure 6-9 is a block diagram of the SPI in slave mode.

TMS320F28044 spi_prs357.gif
A. SPISTE is driven low by the master for a slave device.
Figure 6-9 SPI Module Block Diagram (Slave Mode)