TUSB3200CPAH datasheet by Texas Instruments

TUSB3200CPAH Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TUSB3200CPAH to ensure optimal performance?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. The device should be placed near the USB connector, and the traces should be kept short and shielded to minimize EMI.
• How do I handle the 1.5kΩ pull-up resistor on the D+ line?
  The 1.5kΩ pull-up resistor on the D+ line is required for USB enumeration. It should be connected between the D+ line and the 3.3V power rail. The resistor value can be adjusted based on the specific application requirements.
• What is the maximum cable length supported by the TUSB3200CPAH?
  The TUSB3200CPAH supports cable lengths up to 3 meters (10 feet) for USB 2.0 and 1 meter (3.3 feet) for USB 3.0. However, the actual cable length may vary depending on the specific application and cable quality.
• How do I implement overcurrent protection for the TUSB3200CPAH?
  Overcurrent protection can be implemented using an external current sense resistor and a voltage comparator. The TUSB3200CPAH also has an internal overcurrent detection feature that can be enabled through the I2C interface.
• What is the recommended power sequencing for the TUSB3200CPAH?
  The recommended power sequencing is to power up the 3.3V rail first, followed by the 1.5V rail. The device should be powered up before the USB connector is connected to a host device.