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FT4222HQ-C-R 데이터시트(PDF) 37 Page - Future Technology Devices International Ltd.

부품명 FT4222HQ-C-R
상세설명  USB2.0 to QuadSPI/I2C Bridge IC
PDF  49 Pages
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제조업체  FTDI [Future Technology Devices International Ltd.]
홈페이지  http://www.ftdichip.com
Logo FTDI - Future Technology Devices International Ltd.

FT4222HQ-C-R 데이터시트(HTML) 37 Page - Future Technology Devices International Ltd.

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37
FT4222H USB2.0 TO QUADSPI/I2C BRIDGE IC
1.3
Document No.: FT_001011 Clearance No.: FTDI#405
In Figure 8.3, a control IC with an I2C slave interface but without a USB device interface can easily
connect to USB by integrating the FT4222H into the system. With FTDI’s mature and stable D2XX driver,
and easy to use support library, LibFT4222, the FT4222H can easily connect an application to USB. With a
suitable pull-high resistor value on I2C bus, the transfer speed at this I2C interface can be sped up to the
HS mode defined in I2C specification.
Figure 8.3 Application Example 3
In Figure 8.4, a control IC with an I2C master interface but without a USB upstream port (USB device
interface) can easily connect to USB by integrating the FT4222H into the system. With an I2C slave
interface defined in the FT4222H and easy to use API defined in LibFT4222, it is easy to connect an
application to USB via the FT4222H. With a suitable pull-high resistor value on I2C bus, the transfer
speed at this I2C interface can be speed up to the HS mode.
Figure 8.4 Application Example 4



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