SLLSEV9E July 2016 – November 2023 TUSB522P
PRODUCTION DATA
The TUSB522P differential receivers and transmitters have internal BIAS and termination. Due to this, the TUSB522P must be connected to the USB Host and receptacle through ac-coupling capacitors. In this example, as depicted in Figure 8-2, 100 nF capacitors are placed on TX2P, TX2N, RX1P, RX1N, TX1P and TX1N. No ac-coupling capacitors are placed on the RX2P and RX2N pins because it is assumed the device downstream of the TUSB522P will have ac-coupling capacitors on its transmitter as defined by the USB 3.1 specification. The system designer may desire to support short to VBUS protection. If this is the case, then a 330 nF ac-coupling capacitor should be placed on RX2P/N pins.