JAJSD41E April 2017 – April 2018 TUSB544
PRODUCTION DATA.
The TUSB544 supports USB 3.1 data rates up to 5 Gbps. The TUSB544 supports all the USB defined power states (U0, U1, U2, and U3). Because the TUSB544 is a linear redriver, it can’t decode USB3.1 physical layer traffic. The TUSB544 monitors the actual physical layer conditions like receiver termination, electrical idle, LFPS, and SuperSpeed signaling rate to determine the USB power state of the USB3.1 interface.
The TUSB544 features an intelligent low frequency periodic signaling (LFPS) detector. The LFPS detector automatically senses the low frequency signals and disables receiver equalization functionality. When not receiving LFPS, the TUSB544 will enable receiver equalization based on the UEQ[1:0] and DEQ[1:0] pins or values programmed into UEQ[3:0]_SEL, and DEQ[3:0]_SEL registers.