cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Highlighted
Visitor
Visitor
6,234 Views
Registered: ‎10-10-2014

zc702 USB speed

Hi. Now I need to transfer mass data rapidly between PS and PC.

54365.PNG

I download the zip file which contains an example design of USB mass storage.

After I run the demo, a removable disk appear on PC.

324325.PNG

Then I used a disk test tool to test the R/W speed.

The read speed is around 6MB/s. It's too slow for my project requirement.

 

Have anybody tested the USB on zynq? Please tell me what's the maximum speed? Is there any way to improve the R/W speed?

 

0 Kudos
5 Replies
Highlighted
Xilinx Employee
Xilinx Employee
6,217 Views
Registered: ‎07-31-2012

Hi,

 

I guess you need to check the ZYNQ TRM and datasheet for this information.

Thanks,
Anirudh

PS: Please MARK this as an answer in case it helped resolve your query.Give kudos in case the post guided you to a solution.
0 Kudos
Highlighted
Scholar
Scholar
6,210 Views
Registered: ‎11-09-2013

the 6MB is not that bad, you can get peak speeds up to about 20MB maybe with some tuning. Above that it gets harder and harder to improve the performance

0 Kudos
Highlighted
Visitor
Visitor
6,179 Views
Registered: ‎10-10-2014

480.PNG

<ug585 zynq 7000 TRM>

 

I think the 480Mb/s is only the maximum theoretical speed of USB 2.0 and there seems no information about USB speed in datasheet.

0 Kudos
Highlighted
Visitor
Visitor
6,175 Views
Registered: ‎10-10-2014

Thanks. All the configuration seems to be ok. You test the USB speed and reach 20MB/s? Any suggestion?

0 Kudos
Highlighted
Scholar
Scholar
6,165 Views
Registered: ‎11-09-2013

if I recall correctyl we have seen 20MBs peak yes

0 Kudos