lpcware

LPC18xx USB0_ID Pull up resistor value

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by nallison on Sun Nov 29 17:51:49 MST 2015
Hello,

We're using the LPC1830 and our test engineer wants to know the value of the internal pull-up resistor on the USB0_ID pin. Refer e.g. UM10430, Table 170, page 325 where it says:

Quote:
USB0_ID
Indicates to the transceiver whether connected as an A-device
(USB0_ID LOW) or B-device (USB0_ID HIGH). For use with
OTG, this pin has an internal pull-up resistor



I have looked through the datasheet and user manual but found no numerical value for this pull-up resistor.  A brief search of the USB IF spec documents did not give me any data either.

Please direct me to the documentation that specifies the pull-up value for the LPC1830.

Thank you
Neil

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