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USB Low-Full-High Speed Peripherals

Anonymous
Not applicable
‎Nov 18, 2009 07:07 AM

Data transfer in Isochronous mode

        I download the Firmware(Isochronous) using Cypress Console EZ-USB interface and check the get pipe info as   
Get PipeInfo   
    Pipe: 0 Type: ISO Endpoint: 2 OUT MaxPktSize: 0x400
Pipe: 1 Type: ISO Endpoint: 6 IN MaxPktSize: 0x400   
    I am transferring the data through ISO TRANS pipe 0 with 1024 length, Packet size 1024 with 1 packet with the same hardware used for Bulk mode.
Isoc OUT Transfer
Isoc OUT failed
Would anybody tell me why the transfer get failed?
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Anonymous
Not applicable
‎Oct 19, 2010 06:07 AM

Re: Data transfer in Isochronous mode

Hi

   

 

   

Transfer size in a ISO transfer using CYUSB must be multiple of 8 times of maximum packet size of endpoint.

   

which means in your case it must be 8*1024=8192.

   

 

   

Good luck.

   

AMAS

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