DS_FT311D Datasheet, PDF(28/40 Page) Future Technology Devices International Ltd. – The FT311D is a Full Speed USB host specifically targeted at providing access to peripheral hardware from an Android platform with a USB device port.

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DS_FT311D Datasheet, PDF (28/40 Pages) Future Technology Devices International Ltd. – The FT311D is a Full Speed USB host specifically targeted at providing access to peripheral hardware from an Android platform with a USB device port.

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DS_FT311D USB ANDROID HOST IC Datasheet

Version 1.0

Document No.: FT_000660 Clearance No.: FTDI# 305

8.6 USB to SPI (Master) Converter

3V3

REGULATOR

P Channel Power

MOSFET

0.1uF

5V_SW

Switched 5V Power to

USB

0.1uF

SHIELD

Ferrite

Bead

5V_SW

27R

47pF

100nF

GND

3V3

100nF

4.7uF

VCC

VCCIO

RESET#

VBUSCTRL#

IOBUS0

USBDM

USBDP

IOBUS1

3V3

IOBUS2

10k

IOBUS3

CNFG2

FT311D

IOBUS4

CNFG1

CNFG0

IOBUS5

IOBUS6

1V8 PLL VCC IN

VREGOUT

IOBUS7

100nF

GND

SPI_M_SS#

SPI_M_CLK

SPI_M_MOSI

SPI_M_MISO

SPI SLAVE

e.g. EEPROM,

RTC, CODECs

Figure 8.6 Application Example showing USB to SPI (Master) Converter

This example shows the CNFGx pins set for mode 101 â SPI (Master).

The FT311D SPI Master controls the slave select line and the clock to the external SPI slave.

SPI_M_MOSI is the FT311D data output line which may be Most or Least Significant Bit first.

SPI_M_MISO is the FT311D data input line which may be Most or Least Significant Bit first.

Example SPI Slave devices include memory, RTC, and codec devices.

The unused pins may be left unterminated.

Power to the USB port is enabled by the VBUSCTRL# signal

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