DS_FT311D USB ANDROID HOST IC Datasheet
Version 1.2
Document No.: FT_000660 Clearance No.: FTDI# 305
8.4 USB to I2C (Master) Converter
5V
3V3
3V3
REGULATOR
3V3
10k
10k
VCC
Ferrite
Bead
VCCIO
1
I2C_CLK
RESET#
IOBUS0
IOBUS1
IOBUS2
IOBUS3
IOBUS4
IOBUS5
IOBUS6
IOBUS7
27R
27R
I2C Peripheral
e.g. Memory,
RTC, CODECs
2
3
USBDM
USBDP
I2C_DATA
4
5
47pF
47pF
SHIELD
FT311D
100nF
CNFG2
CNFG1
CNFG0
GND
GND
1V8 PLL VCC IN
GND
10k
3V3
VREGOUT
D
N
D
N
G
A
3V3
G
100nF
+
4.7uF
100nF
GND
GND
Figure 8.4 Application Example showing USB to I2C (Master) Converter
This example shows the CNFGx pins set for mode 011 – I2C (Master).
Only two signal lines are required for I2C interfacing. The clock is an output from the FT311D while the
data line is bi-directional.
Examples of I2C peripherals include EEPROMs, Real time Clocks (RTC) and audio or video codecs.
The unused pins may be left unterminated.
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