ZHCSFL6E July 2016 – November 2023 TUSB522P
PRODUCTION DATA
The TUSB522P is designed to overcome channel loss due to inter-symbol interference and crosstalk when 5Gbps USB3.1 GEN1 signals travel across a PCB or cable. The dual channel architecture is a one-chip, low-power solution, extending the possible channel length for transmit and receive data paths in an application. For a Host application, this enables the system to pass both transmitter compliance and receiver jitter tolerance tests.
The re-driver recovers incoming data by applying equalization that compensates for channel loss, and drives out signals with a high differential voltage. Each channel has a receiver equalizer with selectable gain settings. The equalization should be set based on the amount of insertion loss in channel 1 or 2 before the TUSB522P receivers. Likewise, the output drivers support configuration of De-Emphasis. Independent equalization and de-emphasis control for each channel can be set using EQ1/2 and DE1/2 pins.
The TUSB522P advanced state machine makes it transparent to hosts and devices. After power up, the TUSB522P periodically performs receiver detection on the TX pairs. If it detects a USB3.1 GEN1 receiver, the RX termination is enabled, and the TUSB522P is ready to re-drive.
The device ultra-low-power architecture operates at a 3.3-V power supply and achieves Enhanced performance. The automatic LFPS De-Emphasis control further enables the system to be USB3.1 compliant.