Overview
The TUSB213 is a USB 2.0 High-Speed (HS) signal conditioner designed by Texas Instruments to compensate for signal loss in transmission channels. This device is particularly useful in ensuring that USB High-Speed signals maintain their integrity, thereby helping to pass USB electrical compliance tests. The TUSB213 is agnostic to USB Low Speed (LS) and Full Speed (FS) signals, meaning it does not alter their characteristics, while it actively compensates for HS signals. It is compatible with USB On-The-Go (OTG) and Battery Charging (BC) protocols, making it versatile for various applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| VCC | Supply Voltage | 4.4 | 5.0 | 5.5 | V |
| DC_BOOST | High-level input voltage | 2.4 | 3.6 | V | |
| DC_BOOST | Mid-level input voltage | 1.6 | V | ||
| DC_BOOST | Low-level input voltage | 0 | 0.4 | V | |
| FBR_DXX | DxP/M Bit Rate | 480.24 | Mbps | ||
| tRISE_DXX | DxP/M rise time | 100 | ps | ||
| tFALL_DXX | DxP/M fall time | 100 | ps | ||
| RθJA | Junction-to-ambient thermal resistance | 49.1 | °C/W |
Key Features
- Pin strap or I2C configurable
- Support for LS, FS, HS signaling
- Ultra-low USB Disconnect and Shutdown Power Consumption
- Scalable solution - Daisy Chain Device for High Loss Applications
- D1P/M and D2P/M Interchangeable and Host/Device Agnostic
- Supports up to 5m pre-channel or 2m post-channel Cable Length
- Four Selectable AC Boost Setting Via External Pulldown Resistor
- DC Boost Along With AC Boost for Best Signal Integrity
- Compatible with USB 2.0, OTG 2.0, and BC 1.2
Applications
- Notebooks
- Desktops
- Docking Stations
- Tablets
- Cell Phones
- Active Cable, Cable Extenders
- Backplane
- Televisions
Q & A
- What is the primary function of the TUSB213?
The primary function of the TUSB213 is to restore the signal integrity of a USB High-Speed channel by compensating for signal loss in transmission channels.
- Is the TUSB213 compatible with USB OTG and BC protocols?
- How is the AC boost configured in the TUSB213?
The AC boost is configured through an external pulldown resistor on the EQ pin, allowing for four selectable AC boost settings.
- What are the DC boost settings available in the TUSB213?
The DC boost settings are configured via the DC_BOOST pin, offering three levels of DC gain: 40mV, 60mV, and 80mV.
- Can the TUSB213 be used in daisy chain configurations?
- What is the thermal resistance of the TUSB213 in the RGY package?
The junction-to-ambient thermal resistance (RθJA) of the TUSB213 in the RGY package is 49.1°C/W.
- How does the TUSB213 handle Low Speed and Full Speed signals?
The TUSB213 automatically detects LS and FS connections and does not enable signal compensation for these speeds, leaving their signal characteristics unaffected.
- What is the role of the RSTN pin in the TUSB213?
The RSTN pin is used to disable or enable the device. When asserted low, the device enters shutdown mode.
- Does the TUSB213 support I2C configuration?
- How should the AC and DC boost settings be adjusted and tested?
The AC and DC boost settings should be adjusted by configuring the EQ and DC_BOOST pins, and then tested by toggling the RSTN pin and using USB-IF test fixtures and oscilloscope compliance software.
