Copyright © 2013 Future Technology Devices International Limited

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DS_FT312D USB ANDROID HOST IC Datasheet

Version 1.1

Document No.: FT_000816 Clearance No.: FTDI# 331

Figure 5-3 UART RXD and TXD connection gated by Enumeration

2. If the UART device has an enable pin(active high enable) such as on the GPS module, the

USB_ERROR# can also be used. The USB_ERROR# pin may be inverted with an NPN BJT then connected

to the enable pin of the GPS module.

Figure 5-4 Inverting Gate Control signal to enable GPS module(active high enable)