The model "TS3USB30EDGSR" belongs to Texas Instruments (TI). It is a USB 3.0 switch with multiple channels, designed for high-speed USB 3.0 data transmission. The part is typically available in a QFN (Quad Flat No-lead) package, which is commonly used for compact, surface-mount devices. The exact pin count and the associated functions depend on the specific variant of the device, but it often comes in a 56-pin configuration.
Here’s a detailed explanation of the pin functions and circuit principles:
Pin Function Table (56-Pin QFN Package Example)
Pin Number Pin Name Function Description 1 VDD Power supply input for the device. 2 VSS Ground pin. 3 USB1A+ USB 3.0 differential signal positive (Channel 1). 4 USB1A- USB 3.0 differential signal negative (Channel 1). 5 USB1B+ USB 3.0 differential signal positive (Channel 1, alternate side). 6 USB1B- USB 3.0 differential signal negative (Channel 1, alternate side). 7 USB2A+ USB 3.0 differential signal positive (Channel 2). 8 USB2A- USB 3.0 differential signal negative (Channel 2). 9 USB2B+ USB 3.0 differential signal positive (Channel 2, alternate side). 10 USB2B- USB 3.0 differential signal negative (Channel 2, alternate side). 11 USB3A+ USB 3.0 differential signal positive (Channel 3). 12 USB3A- USB 3.0 differential signal negative (Channel 3). 13 USB3B+ USB 3.0 differential signal positive (Channel 3, alternate side). 14 USB3B- USB 3.0 differential signal negative (Channel 3, alternate side). 15 USB4A+ USB 3.0 differential signal positive (Channel 4). 16 USB4A- USB 3.0 differential signal negative (Channel 4). 17 USB4B+ USB 3.0 differential signal positive (Channel 4, alternate side). 18 USB4B- USB 3.0 differential signal negative (Channel 4, alternate side). 19 VDDIO Input for I/O voltage. 20 I2C_SCL I2C clock line. 21 I2C_SDA I2C data line. 22 GND Ground pin. 23 VDD Power supply input for the device. 24 USB5A+ USB 3.0 differential signal positive (Channel 5). 25 USB5A- USB 3.0 differential signal negative (Channel 5). 26 USB5B+ USB 3.0 differential signal positive (Channel 5, alternate side). 27 USB5B- USB 3.0 differential signal negative (Channel 5, alternate side). 28 USB6A+ USB 3.0 differential signal positive (Channel 6). 29 USB6A- USB 3.0 differential signal negative (Channel 6). 30 USB6B+ USB 3.0 differential signal positive (Channel 6, alternate side). 31 USB6B- USB 3.0 differential signal negative (Channel 6, alternate side). 32 VSS Ground pin. 33 VDD Power supply input for the device. 34 USB7A+ USB 3.0 differential signal positive (Channel 7). 35 USB7A- USB 3.0 differential signal negative (Channel 7). 36 USB7B+ USB 3.0 differential signal positive (Channel 7, alternate side). 37 USB7B- USB 3.0 differential signal negative (Channel 7, alternate side). 38 USB8A+ USB 3.0 differential signal positive (Channel 8). 39 USB8A- USB 3.0 differential signal negative (Channel 8). 40 USB8B+ USB 3.0 differential signal positive (Channel 8, alternate side). 41 USB8B- USB 3.0 differential signal negative (Channel 8, alternate side). 42 VDD Power supply input for the device. 43 VSS Ground pin. 44 USB9A+ USB 3.0 differential signal positive (Channel 9). 45 USB9A- USB 3.0 differential signal negative (Channel 9). 46 USB9B+ USB 3.0 differential signal positive (Channel 9, alternate side). 47 USB9B- USB 3.0 differential signal negative (Channel 9, alternate side). 48 USB10A+ USB 3.0 differential signal positive (Channel 10). 49 USB10A- USB 3.0 differential signal negative (Channel 10). 50 USB10B+ USB 3.0 differential signal positive (Channel 10, alternate side). 51 USB10B- USB 3.0 differential signal negative (Channel 10, alternate side). 52 VSS Ground pin. 53 VDD Power supply input for the device. 54 RESET Reset pin (active low). 55 SDIO Serial Data I/O for external communication. 56 VSS Ground pin.Common Questions & Answers (FAQ)
Q1: What is the function of the VDD pin in the TS3USB30EDGSR? A1: The VDD pin provides the power supply input for the TS3USB30EDGSR device.
Q2: How does the TS3USB30EDGSR manage USB 3.0 signals? A2: It manages the USB 3.0 differential signals through pairs of pins like USB1A+/A-, USB1B+/B-, and so on for each channel.
Q3: What is the role of the I2CSCL pin? A3: The I2CSCL pin is the clock line for I2C communication, used for controlling the device via an I2C bus.
Q4: Can I connect multiple USB channels at the same time? A4: Yes, the TS3USB30EDGSR supports multiple USB 3.0 channels that can be simultaneously connected.
Q5: What happens when the RESET pin is activated? A5: When the RESET pin is active low, it resets the device.
Q6: What is the purpose of the SDIO pin? A6: The SDIO pin is used for serial data input and output for external communication with other devices.
Q7: Is the VSS pin connected to ground? A7: Yes, the VSS pins are ground pins and provide the return path for current.
Q8: How do I ensure proper signal integrity for USB signals? A8: Proper PCB layout with controlled impedance for USB differential pairs is essential to maintain signal integrity.
Q9: Can the TS3USB30EDGSR be used in high-speed data applications? A9: Yes, it is specifically designed for high-speed USB 3.0 applications, supporting data transfer rates up to 5 Gbps.
Q10: Does the device support USB 2.0 signals as well? A10: The TS3USB30EDGSR is optimized for USB 3.0 but is backward compatible with USB 2.0 signaling.
Q11: How do I configure the I2C communication with the device? A11: You configure the I2C communication by connecting the I2CSDA and I2CSCL lines to a microcontroller or other I2C master.
Q12: What is the voltage range for VDD? A12: The typical voltage range for VDD is between 2.7V and 3.6V.
Q13: Can I use the TS3USB30EDGSR for USB OTG (On-The-Go) applications? A13: Yes, the device can be used in USB OTG configurations.
Q14: What is the maximum current that the VDD pin can supply? A14: The maximum current provided by the VDD pin depends on the specific device configuration, but typically, it's designed for low-power consumption.
Q15: Does the device support hot swapping? A15: Yes, the TS3USB30EDGSR supports hot swapping of USB devices.
Q16: How do I use the USB differential signal pairs for proper connectivity? A16: Ensure that the USB differential pairs (USBxA+/x-, USBxB+/x-) are routed properly with matched trace lengths and impedance.
Q17: Are there any restrictions on the type of USB devices that can be connected? A17: No, the device is designed to work with a variety of USB 3.0 and backward-compatible devices.
Q18: What are the implications of not connecting the I2C pins? A18: The I2C pins allow for configuration and control; if they are not connected, certain functionalities may not be adjustable.
Q19: Can the TS3USB30EDGSR be used in embedded systems? A19: Yes, the TS3USB30EDGSR is suitable for embedded systems that require high-speed USB connectivity.
Q20: Is there a specific PCB layout guideline for the TS3USB30EDGSR? A20: Yes, it is recommended to follow the manufacturer’s PCB layout guidelines to ensure signal integrity, especially for high-speed USB lines.
I hope this detailed explanation covers your requirements! Let me know if you need any more specific information or further clarification.