FT4222HQ-C-R datasheet(16/49 Pages) FTDI

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FT4222HQ-C-R Datasheet(PDF) 16 Page - Future Technology Devices International Ltd.

Part #	FT4222HQ-C-R

Description	USB2.0 to QuadSPI/I2C Bridge IC

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

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16 / 49 page

FT4222H USB2.0 TO QUADSPI/I2C BRIDGE IC

1.3

Document No.: FT_001011 Clearance No.: FTDI#405

When the FT4222H is operating as an SPI master or slave device, QuadSPI can transfer data in single bit

mode with full-duplex transmission. Figure5.1 shows the basic protocol in single transfer mode

Figure 5.1 QuadSPI Bus Protocol when Transferring in Single Mode

QuadSPI can operate in dual or quad transfer mode when QuadSPI is programmed as an SPI master.

These multi-bit transfer modes can speed up the data transfer rate between QuadSPI and the SPI slave

device supporting the multi-bit transfer. Figure5.2 shows the bus protocol in dual or quad mode

Figure 5.2 QuadSPI Bus Protocol when Transferring in Quad Mode

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