This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: TUSB8041A
We want to check about the max cable length before the hub and after the hub. Before the hub is FR4 pcb trace, after the hub is the PCB trace plus the usb 3.0 cable. We cannot find EQ and DE information in the datasheet. Thanks.
BTW: My customer want to use it with AMD platform, please also help check whether it's ok. Thanks.
max PCB trace length is 8in, max USB3 cable length is 3m.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Brian Zhou:
Thanks for your answers. How about the length before the chip? Do we have some details about the internal adaptive EQ? We want to get the advantages of the spec, whether it’s only good when using the aging cable? whether it can be compatible with USB2.0 without changing anything?Thanks.
In reply to Frank Xiao:
We recommend a max of 8 inches of PCB traces before or after the hub, longer PCB trace length is possible but care must be taken to match trace length and control impedance. Max USB 2.0 cable length is 5M.
In reply to JMMN:
The max PCB trace length 8in, max USB3 cable length 3m are before plus the after the hub? whether it has some guideline where we put the hub, or just based on the power loss, if before loss is larger, we put near the source side, otherwise we will put near the end point side, correct? So our device cannot be changed the EQ manually. Thanks.
To clarify, the TUSB8041A can handle 8 inches of PCB trace length on the board from hub to connector. At the connector the hub can accept USB compliant cable lengths (USB 3.0 - 3M/ USB 2.0 - 5M).
HOST - 3M USB 3.0 cable - 8" PCB - HUB - 8" PCB - 3M USB 3.0 cable - device
other team member recommends to use the TUSB8042A to replace TUSB8041. Whether the EQ and cable capability of 8042A is the same as 8041? Thanks.
TUSB8042A has the most recent USB 3.2 spec updates:
But EQ and cable capabilities are the same.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.