USB2514BI-AEZG Detailed explanation of pin function specifications and circuit principle instructions（263 ）

The model you mentioned, USB2514BI-AEZG, belongs to Microchip Technology Inc., a leading provider of semiconductor solutions, especially known for USB hubs, among other products.

Package Type and Pin Configuration:

The USB2514BI-AEZG is part of Microchip's USB hub family. It specifically belongs to a QFN-48 package (48 pins in total). A QFN (Quad Flat No-lead) package is a type of surface-mount package with leads underneath, commonly used for small form-factor devices.

Pin Function Table for USB2514BI-AEZG:

This section outlines the pin functions for all 48 pins in the QFN package:

Pin No. Pin Name Function Description 1 VDD Power supply input pin (3.3V). 2 GND Ground pin. 3 D0+ USB Differential Data Line (Data 0 positive). 4 D0- USB Differential Data Line (Data 0 negative). 5 D1+ USB Differential Data Line (Data 1 positive). 6 D1- USB Differential Data Line (Data 1 negative). 7 D2+ USB Differential Data Line (Data 2 positive). 8 D2- USB Differential Data Line (Data 2 negative). 9 D3+ USB Differential Data Line (Data 3 positive). 10 D3- USB Differential Data Line (Data 3 negative). 11 VDD33 3.3V supply input for USB VBUS detection. 12 NC No connection (internally not connected). 13 VBUS USB VBUS detection input. 14 CP Capacitor connection (used for internal circuitry). 15 RESET Reset input (active low). 16 SEL Select input for operation mode (active low). 17 PWR_EN Power enable input (enables power to the device). 18 FAULT Fault indicator output (indicates malfunction). 19 SENSE Voltage sense input (for detection of voltage levels). 20 VDD Power supply input (3.3V). 21 GND Ground pin. 22 TX1+ USB Transmit Line (High-speed, positive). 23 TX1- USB Transmit Line (High-speed, negative). 24 RX1+ USB Receive Line (High-speed, positive). 25 RX1- USB Receive Line (High-speed, negative). 26 TX2+ USB Transmit Line (High-speed, positive). 27 TX2- USB Transmit Line (High-speed, negative). 28 RX2+ USB Receive Line (High-speed, positive). 29 RX2- USB Receive Line (High-speed, negative). 30 VDD33 3.3V supply for USB transceiver s. 31 NC No connection (internally not connected). 32 VDD Power supply input (3.3V). 33 GND Ground pin. 34 RX3+ USB Receive Line (High-speed, positive). 35 RX3- USB Receive Line (High-speed, negative). 36 TX3+ USB Transmit Line (High-speed, positive). 37 TX3- USB Transmit Line (High-speed, negative). 38 PLL_EN PLL Enable pin (used for enabling PLL in operation). 39 REF Reference Clock input for USB signal integrity. 40 TX_EN Transmit Enable pin (used for enabling transmission). 41 RX_EN Receive Enable pin (used for enabling reception). 42 VDD33 3.3V power for internal operation. 43 TEST Test mode control pin (used for debugging). 44 CLKOUT Clock output pin (provides clock signal for external devices). 45 NC No connection. 46 NC No connection. 47 NC No connection. 48 GND Ground pin.

FAQ: 20 Common Questions for USB2514BI-AEZG

What is the USB2514BI-AEZG used for? The USB2514BI-AEZG is a USB hub controller, enabling the expansion of USB ports in systems. What type of package does the USB2514BI-AEZG use? It comes in a QFN-48 package, which includes 48 pins. What is the voltage requirement for the USB2514BI-AEZG? It operates at 3.3V power input (VDD). What are the main functions of the USB data pins (D0+, D0-, etc.)? These pins transmit and receive USB data signals between devices. What is the purpose of the RESET pin on the USB2514BI-AEZG? The RESET pin is used to reset the device when pulled low. Can the USB2514BI-AEZG detect USB faults? Yes, it has a FAULT pin that indicates issues with USB communication. What is the VBUS pin used for? VBUS is used for detecting USB power supply voltages. How do I power the USB2514BI-AEZG? It requires a 3.3V power supply connected to the VDD pins. What is the role of the PLL_EN pin? The PLL_EN pin enables or disables the phase-locked loop for timing synchronization.

What type of devices can be connected through the USB2514BI-AEZG?

It is suitable for USB hubs, devices requiring additional USB ports, and USB peripherals.

What is the function of the VDD33 pins?

These pins supply 3.3V power to internal circuitry, including transceivers and other components.

Can the USB2514BI-AEZG be used in a high-speed USB system?

Yes, it supports high-speed USB communication with data rates up to 480 Mbps.

What is the role of the SENSE pin?

The SENSE pin detects the voltage levels from connected devices.

Can I use the USB2514BI-AEZG in a USB 2.0 system?

Yes, the USB2514BI-AEZG is backward compatible with USB 2.0.

What is the function of the TX/RX pins?

These pins handle the USB data transmission and reception.

Is there any test functionality in the USB2514BI-AEZG?

Yes, the TEST pin is available for testing and debugging purposes.

What does the CLKOUT pin do?

The CLKOUT pin outputs a clock signal for external systems requiring synchronization.

What is the role of the NC pins?

NC (No Connection) pins are not used and do not connect to any internal circuitry.

Can the USB2514BI-AEZG be used in mobile devices?

Yes, it is commonly used in applications such as smartphones and tablets that require multiple USB connections.

How should the RESET pin be used for system initialization?

The RESET pin should be pulled low to reset the device during power-up or when needed to restart functionality.

This detailed breakdown gives a thorough explanation of the USB2514BI-AEZG package, pins, and common questions surrounding its operation.