PORTS Forum
Ports and Interfaces => USB => Topic started by: USBVIDPID on August 22, 2012, 03:40:22 pm
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What is the maximum polling rate allowed for a full speed control endpoint using EHCI Host?
Thx, jmw
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I just noticed you said control endpoint. You could possibly do it several times a ms. Table 5.2 of the spec tells you the maximum number of control requests you could possibly do depends on the transfer size, but is 32 for 1 byte transfers.
I'm not sure a real world EHCI controller could manage that though.