DS_FT311D USB ANDROID HOST IC Datasheet
Version 1.0
Document No.: FT_000660 Clearance No.: FTDI# 305
8 Application Examples
The following sections illustrate possible applications of the FT311D.
8.1 USB to GPIO Converter
P Channel Power
MOSFET
5V_SW
Switched 5V Power to
USB
5V
0.1uF
0.1uF
3V3
3V3
REGULATOR
3V3
470R
470R
470R
470R
VCC
VBUSCTRL#
IOBUS0
Ferrite
Bead
VCCIO
5V_SW
1
RESET#
27R
27R
2
3
USBDM
USBDP
IOBUS1
4
IOBUS2
5
47pF
47pF
IOBUS3
SHIELD
FT311D
IOBUS4
IOBUS5
IOBUS6
IOBUS7
100nF
CNFG2
CNFG1
CNFG0
GND
GND
GND
1V8 PLL VCC IN
VREGOUT
D
N
D
N
G
A
3V3
G
GND
100nF
+
4.7uF
100nF
GND
GND
Figure 8.1 Application Example showing USB to GPIO Converter
This example shows the CNFGx pins set for mode 000 – GPIO.
IOBUS0-3 are configured as outputs by the Android application to control the LEDs.
IOBUS4-6 pins are configured as inputs to allow the buttons to control actions in the Android application.
Power to the USB port is enabled by the VBUSCTRL# signal
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