Dec 10, 2018
09:14 AM
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Dec 10, 2018
09:14 AM
Unfortunately, I can only guess the switch-on of the pull-downs in host mode implicitly from the data sheet.
According the USB physical layer specification, I know a 15kohm pull down must be implemented for speed
detection (see picture below)
In the data sheet the pull down are specified
.
Now my question:
Do I have to explicitly activate the pull-down or is it sufficient to operate the peripheral in host mode?
Best regards
EbbeSand
According the USB physical layer specification, I know a 15kohm pull down must be implemented for speed
detection (see picture below)
In the data sheet the pull down are specified
.
Now my question:
Do I have to explicitly activate the pull-down or is it sufficient to operate the peripheral in host mode?
Best regards
EbbeSand
- Tags:
- IFX
2 Replies
Dec 18, 2018
04:54 AM
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Dec 18, 2018
04:54 AM
Depending on the Speed mode they are activated accordingly.
Kind Regards
Michael
Kind Regards
Michael
Dec 18, 2018
08:00 AM
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Dec 18, 2018
08:00 AM
Hello Michael
I use maximal Full Speed for the USB Interface
An therefore my question If I config the Interface to Full Speed Master the USB-IP set the pull
down on the D+ and D- line in Hardware and set the pull ups to inactive, because These resistore
are only use if the XMC is used as a device and not as host. Correct?
Best regards
EbbeSand
I use maximal Full Speed for the USB Interface
An therefore my question If I config the Interface to Full Speed Master the USB-IP set the pull
down on the D+ and D- line in Hardware and set the pull ups to inactive, because These resistore
are only use if the XMC is used as a device and not as host. Correct?
Best regards
EbbeSand