Hi
Has anyone implemented USBOTG using ISP1301 on the LPC17xx range?
I am looking for a simple virtual com port solution...
Regards Mark
There is an option, host/device switch, other than OTG using ISP1301. In this option, USB D+/D- lines from A and B USB receptacles are switched by analog switches, to connect to single-pair D+/D- pins of LPC17xx.
Analog switches for FS/LS USB line,
Switching in USB Consumer Applications - Analog Devices www.analog.com/.../usb_switch.html
ON semiconductor www.onsemi.com/.../parametrics.do
Fairchild www.fairchildsemi.com/.../USBGuide_ENG_pgs.pdf
Depending on your target application, this dual-role implementation may be better than OTG. Also, this implementation makes your firmware simple, because OTG-specific protocols are not required to code in.
Tsuneo