several types of USB chip diagram (ISP1161 and ISP1362. ISP 1581 and D12)

Packet : 47651487usb_sch_1.zip filelist
usb_lib/
usb_lib/USB_ISP1161原理图.pdf
usb_lib/USB_ISP1362原理图.pdf
usb_lib/USB_ISP1581原理图.pdf
usb_lib/USB_PIDUSBD12原理图.pdf

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