The model USB2514B-I/M2 is a part of Microchip Technology's product line. It is a USB 2.0 hub controller that provides the necessary hardware interface for connecting multiple USB devices to a computer or another USB host.
Here are some specifics regarding your request for the USB2514B-I/M2:
Package Type: The USB2514B-I/M2 is available in a QFN (Quad Flat No-lead) package, typically 32 pins. Depending on the manufacturer and package type, it can vary slightly. This chip is often designed to work with USB 2.0 hubs.
Pin Function Specifications & Circuit Principle: The USB2514B-I/M2 includes several functional pins that support USB functionality, Power management, and system interfacing. Here’s a breakdown of all its pins with their corresponding functions. There are 32 pins in total.
Pin Number Pin Name Pin Function Description 1 VBUS Power USB Bus Power Input 2 VDDIO Power I/O Voltage Supply 3 VDD Power Core Voltage Supply 4 GND Ground Ground Pin 5 NC No Connect Not connected (reserved) 6 D- Data USB 2.0 Differential Data Line (-) 7 D+ Data USB 2.0 Differential Data Line (+) 8 SUSPEND Logic Control Suspend Mode Indicator 9 RESET Logic Control Reset Control Input 10 CE Logic Control Chip Enable (Active Low) 11 ADDR0 Logic Control Address Selection Pin (L) 12 ADDR1 Logic Control Address Selection Pin (H) 13 CLKOUT Logic Control Clock Output for Synchronous Devices 14 INT Logic Control Interrupt Output 15 SCL Logic Control Serial Clock for I2C Communication 16 SDA Logic Control Data Pin for I2C Communication 17 OE Logic Control Output Enable Pin 18 TX1 Data USB Transmit Data Line 1 19 RX1 Data USB Receive Data Line 1 20 TX0 Data USB Transmit Data Line 0 21 RX0 Data USB Receive Data Line 0 22 GND Ground Ground Pin 23 VBUSS Power Secondary USB Power Input 24 NC No Connect Not connected 25 GND Ground Ground Pin 26 REG33 Power 3.3V Regulator Output 27 REG5 Power 5V Regulator Output 28 RX2 Data USB Receive Data Line 2 29 TX2 Data USB Transmit Data Line 2 30 VBUS Power USB Bus Power Input 31 VDDIO Power I/O Voltage Supply 32 GND Ground Ground Pin20 Common FAQ for USB2514B-I/M2
Q: What is the purpose of pin 1 (VBUS) in the USB2514B-I/M2? A: Pin 1 (VBUS) is used as the USB Bus Power Input, which supplies power to the USB bus for connected devices.
Q: What is the function of pin 6 (D-) on the USB2514B-I/M2? A: Pin 6 (D-) is the USB 2.0 Differential Data Line (-) responsible for transmitting data in the negative polarity.
Q: What does the SUSPEND pin (pin 8) control? A: The SUSPEND pin indicates whether the device is in suspend mode, which is used to reduce power consumption.
Q: How does the RESET pin (pin 9) work on the USB2514B-I/M2? A: The RESET pin is used to reset the device when asserted, returning it to a known state.
Q: What is the purpose of pin 10 (CE)? A: The Chip Enable (CE) pin is used to activate or deactivate the USB2514B-I/M2, depending on whether it is pulled low or high.
Q: What is the function of pins 12 and 13 (ADDR0 and ADDR1)? A: Pins 12 and 13 are used for address selection in the device, allowing for proper addressing in multi-device configurations.
Q: How does the CLKOUT pin (pin 13) function? A: The CLKOUT pin provides a clock output to synchronize devices with the USB2514B-I/M2.
Q: What is the purpose of pin 14 (INT)? A: The INT pin is used as the interrupt output, indicating to the host when an event occurs on the device.
Q: How do I use I2C communication with the USB2514B-I/M2? A: Pins 15 (SCL) and 16 (SDA) are used for I2C communication, where SCL is the clock line, and SDA is the data line.
Q: What does the OE pin (pin 17) do? A: The OE pin is used to enable or disable the output drivers of the device.
Q: What are pins 18 and 20 used for (TX1 and TX0)? A: Pins 18 and 20 are used for transmitting data over USB in differential pairs, TX1 and TX0, respectively.
Q: What is the function of pins 19 and 21 (RX1 and RX0)? A: Pins 19 and 21 are used for receiving USB data in differential pairs, RX1 and RX0, respectively.
Q: How do I power the device using VBUS? A: Pin 23 (VBUSS) is used to provide a secondary power supply to the USB2514B-I/M2, complementing the main VBUS.
Q: Why is there a pin labeled NC (No Connect)? A: The NC pin is not connected internally and is reserved for future use or unused in this configuration.
Q: What is the role of pin 26 (REG33)? A: The REG33 pin provides a 3.3V regulator output for supplying power to external devices or circuits.
Q: Can I use the REG5 pin to power devices? A: Yes, pin 27 (REG5) provides a regulated 5V output that can be used to power connected devices.
Q: What is the difference between RX and TX pins on the USB2514B-I/M2? A: RX pins (19 and 21) are for receiving data, while TX pins (18 and 20) are for transmitting data over USB.
Q: How do I know if the USB2514B-I/M2 is properly powered? A: If the VDD and VBUS pins are correctly powered and the device responds to the reset pin, the device is properly powered.
Q: What should I do if the device is not working after reset? A: Check the reset circuitry and ensure that the RESET pin is properly asserted to initialize the device.
Q: Can I use the USB2514B-I/M2 with USB 3.0 devices? A: No, the USB2514B-I/M2 is designed for USB 2.0 and does not support USB 3.0 data rates.
This table provides a detailed explanation of the 32 pins for the USB2514B-I/M2, its function, and a FAQ section covering common queries.