Anonymous
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Oct 01, 2012
08:12 PM
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Oct 01, 2012
08:12 PM
1 Solution
Anonymous
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Oct 02, 2012
01:51 AM
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Oct 02, 2012
01:51 AM
Yes. You need to use EP3 or 7 if you are going for ISO, multi packet transfers.
Regards,
sai krishna.
8 Replies
Anonymous
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Oct 01, 2012
08:29 PM
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Oct 01, 2012
08:29 PM
Continue! I want to data tarnsfer over 1msec in 1 time Isochronous transfer. However I transferred data just 1msec. regard.
Anonymous
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Oct 02, 2012
12:20 AM
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Oct 02, 2012
12:20 AM
solved! I didn't use EP3. Thanks.
Anonymous
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Oct 02, 2012
01:51 AM
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Oct 02, 2012
01:51 AM
Yes. You need to use EP3 or 7 if you are going for ISO, multi packet transfers.
Regards,
sai krishna.
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Anonymous
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Oct 02, 2012
09:37 PM
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Oct 02, 2012
09:37 PM
Hi sai,I have next problem. I tried to transfer the data of the following capacity inputted from GPIF-FIFO on isochronous. 1024(paket) x 10(burst) x 2(frame burst) x 8(1msec) x 10(10msec) = 1,638,400byte However, windows will hang-up and it will be a blue screen. Please let me know why. regards.
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Anonymous
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Oct 02, 2012
09:40 PM
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Oct 02, 2012
09:40 PM
Anonymous
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Oct 03, 2012
02:05 AM
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Oct 03, 2012
02:05 AM
This might be due to your host controller not allowing you to allocate more bandwidth.
We can check the maximum bandwidth allocated by the Host to our device for these conditions:
1. Burst length: 15, single ISO packet
2. Burst length: 7, two ISO packets
3. Burst length: 5, three ISO packets.
You can also try for the above mentioned configurations.
Thanks,
sai krishna.
Anonymous
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Oct 04, 2012
12:00 AM
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Oct 04, 2012
12:00 AM
Thank you sai, >1.Burst length:15, single ISO packet >2.Burst length:7, two ISO packets >3.Burst length:5, three ISO packets. So, More than the above-mentioned bandwidth is expectable on the present host controller? Thanks
Anonymous
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Oct 04, 2012
01:22 AM
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Oct 04, 2012
01:22 AM
Right.
If we ask for any bandwidth more than around 130MBps for ISO, host controller fails to do that.
Thanks,
sai krishna.