USB2514BI-AEZG Pin Configuration Guide

The USB2514BI-AEZG is a highly integrated USB 2.0 hub controller. This article provides a detailed pin configuration guide for this device to help you understand its functionality and ensure correct usage in your projects.

Introduction

Understanding the pin configuration of the USB2514BI-AEZG is crucial for integrating this USB hub controller into your designs effectively. This guide will walk you through each pin's function, helping you use this component correctly and efficiently.

1. Overview of USB2514BI-AEZG

The USB2514BI-AEZG is a four-port, low-power USB 2.0 hub controller with an integrated EEPROM interface. It supports low-speed, full-speed, and high-speed USB connections, making it versatile for various applications.

2. Pin Configuration

The USB2514BI-AEZG comes in a 36-pin package. Each pin has a specific function that contributes to the device's overall operation. Let's delve into the details of these pins.

3. Power Pins

Pin 1: VDD33

  • Description: This pin supplies 3.3V power to the device.
  • Usage: Ensure a stable 3.3V power source is connected to this pin to power the internal logic.

Pin 2: GND

  • Description: Ground pin.
  • Usage: Connect this pin to the ground of your circuit to complete the power loop.

Pin 3: VBUS

  • Description: Bus power detection pin.
  • Usage: Connect to the 5V power line from the USB bus to detect the presence of VBUS.

4. USB Pins

Pins 4-7: USB_DP1, USB_DM1, USB_DP2, USB_DM2

  • Description: USB data pins for port 1 and port 2.
  • Usage: These pins should be connected to the respective data lines of the USB devices.

Pins 8-11: USB_DP3, USB_DM3, USB_DP4, USB_DM4

  • Description: USB data pins for port 3 and port 4.
  • Usage: Connect these pins to the data lines of additional USB devices.

5. Clock Pins

Pin 12: XI

  • Description: Crystal oscillator input.
  • Usage: Connect to an external crystal oscillator to provide the clock signal.

Pin 13: XO

  • Description: Crystal oscillator output.
  • Usage: Connect to the other terminal of the external crystal oscillator.

6. Control Pins

Pin 14: RESET_N

  • Description: Active-low reset pin.
  • Usage: Pull this pin low to reset the device. It should be connected to a pull-up resistor.

Pin 15: SCL

  • Description: I2C clock line.
  • Usage: Connect to the I2C clock line for EEPROM interfacing.

Pin 16: SDA

  • Description: I2C data line.
  • Usage: Connect to the I2C data line for EEPROM communication.

7. LED Indicator Pins

Pin 17: LED1

  • Description: LED indicator for port 1.
  • Usage: Connect an LED to indicate the status of USB port 1.

Pin 18: LED2

  • Description: LED indicator for port 2.
  • Usage: Connect an LED to show the status of USB port 2.

Pins 19-20: LED3, LED4

  • Description: LED indicators for ports 3 and 4.
  • Usage: Connect LEDs to these pins to indicate the status of USB ports 3 and 4, respectively.

8. Miscellaneous Pins

Pin 21: TEST

  • Description: Test mode pin.
  • Usage: Reserved for factory testing. Typically, it should be left unconnected in regular applications.

Pin 22: CFG_SEL

  • Description: Configuration select pin.
  • Usage: Used to select the hub configuration. Connect to the appropriate voltage level based on the desired configuration.

9. Practical Application Tips

When integrating the USB2514BI-AEZG into your design:

  • Power Stability: Ensure stable power supply connections to avoid malfunctions.
  • Proper Grounding: Properly ground the device to reduce noise and improve performance.
  • Correct Connections: Double-check connections to all USB, clock, control, and LED pins to ensure proper functionality.
  • Follow Specifications: Adhere to the datasheet specifications for optimal performance and reliability.

Conclusion

Understanding the pin configuration of the USB2514BI-AEZG is essential for leveraging its full potential in your projects. By following this guide, you can ensure proper integration and operation of this versatile USB hub controller.

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