SLLU327 May 2020 TUSB217A
The primary purpose of the USB 2.0 signal conditioner is to restore the signal integrity of a USB High-Speed channel to USB 2.0 compliant levels. The platform goal is to pass the USB Near-End or Far-End Eye Mask with the device in the best location.
A typical use case is to place the USB 2.0 signal conditioner close to the USB connector on a host platform to pass Near-End Eye Mask testing. This includes systems where the USB connector may be placed at the far-end of a cable.
Typical RX sensitivity and boost recommendations based on cable length (28 AWG USB cable) are shown in Table 4-4. TI recommends starting with the lower settings first
Cable Length | BOOST | RX_SEN |
---|---|---|
0 m - 2 m | Level 0 | MID |
3 m - 5 m | Level 1 | MID, HIGH |