用户手册 — Texas Instruments BUF22821 Evaluation board BUF22821EVM-USB

目录

• BUF22821EVM-USB Evaluation Board and Software Tutorial

  1
  • 1 Overview

    2
    • 1.1 BUF22821EVM-USB Kit Contents

      3
    • 1.2 Related Documentation from Texas Instruments

      4
  • 2 BUF22821EVM-USB Hardware Setup

    4
    • 2.1 Theory of Operation for BUF22821 Hardware

      5
    • 2.2 Signal Definitions of J1 (25-Pin Male DSUB)

      5
      • 2.2.1 Theory of Operation for USB_DIG_Platform

        6
  • 3 BUF22821EVM-USB Hardware

    6
    • 3.1 Electrostatic Discharge Warning

      6
    • 3.2 Typical Hardware Connections

      7
    • 3.3 Connecting the Hardware

      7
    • 3.4 Connecting Power

      8
    • 3.5 Connecting the USB Cable to the USB_DIG_Platform

      9
    • 3.6 BUF22821EVM-USB Default Jumper Settings

      10
  • 4 BUF22821EVM-USB Features

    12
    • 4.1 JMP1: VSD Control Setting

      12
    • 4.2 JMP2: I2C SCL Control Setting

      13
    • 4.3 JMP3: I2C SDA Control Setting

      13
    • 4.4 JMP4: BKSEL Control Setting

      13
    • 4.5 JMP5: I2C Address Hardware Setting

      13
    • 4.6 JMP6: STATIN_H Control Setting

      14
    • 4.7 JMP7: STATIN_L Control Setting

      14
    • 4.8 BUF22821 Device Placement

      14
    • 4.9 Terminal Strip TP1

      14
  • 5 BUF22821EVM-USB Software Setup

    15
    • 5.1 BUF22821EVM-USB Software Operating Systems

      15
    • 5.2 BUF22821 Software Installation

      15
    • 5.3 Software Description and Set-Up

      16
  • 6 BUF22821EVM-USB Software Overview

    17
    • 6.1 Starting the BUF22821EVM-USB Software

      17
    • 6.2 Using the BUF22821 Software

      18
      • 6.2.1 I2C Address Selection

        18
      • 6.2.2 Measuring the Power Supply

        19
      • 6.2.3 Read DAC Button

        20
      • 6.2.4 Write DAC Button

        20
      • 6.2.5 Reset Button

        21
      • 6.2.6 Save to File Button

        21
      • 6.2.7 Load From File Button

        22
      • 6.2.8 Changing DAC Analog Voltage

        23
      • 6.2.9 Run Batch Button

        23
      • 6.2.10 Control Panel Button

        24
      • 6.2.11 Program OTP All Channels Button

        25
  • 7 BUF22821EVM-USB Documentation

    26
    • 7.1 BUF22821EVM-USB Board Schematic

      26
    • 7.2 PCB Layout

      27
    • 7.3 Bill of Materials

      28
• Important Notices

  29