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Document Reference No.: FT_000331
FT4232H Hub Module Datasheet
Version 1.0
Clearance No.: FTDI# 174
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Introduction
The FT4232H Hub Module is a USB interface expansion module targeted at connecting to the FTDI
V2DIPx modules to expand the number of interfaces. However, it is not limited to this application. It can
also be used as a hub device or an FT4232H evaluation module. The module has a USB 2.0 Hi-Speed hub
chip which supports up to three external downstream USB ports: 2 via a dual USB connector and 1 via
the DIL connector pins. Aditionally, by utilizing the FT4232H USB Hi-Speed four-port bridge chip which
handles all the USB signalling and protocols, the module can easily support up to 4 flexible interfacing
ports. It is ideal for development purposes to quickly prove functionality of adding USB to a target
design.
Figure 1.1 - FT4232H Hub Module
The module utilises the GL850G USB 2.0 hub controller which provides a low-cost, and widely used USB
2.0 hub solution, to provide up to 4 downstream USB ports. The GL850G is a single USB hub solution.
The GL850G is a full function solution which support both Individual/Gang power management modes
and two-color (green/amber) status LED. GL850G can be used with an external EEPROM (on the module)
which can be used to customize PID/VID and other more complicated settings.
The FT4232H used on the Module is FTDI’s 5th generation of USB devices. The FT4232H is a USB 2.0 Hi-
Speed (480Mb/s) to UART/MPSSE IC. The device features four interfaces that can be configured for
asynchronous or synchronous serial communications. Two of these interfaces have an option to be
independently configured via an MPSSE engine. This allows the FT4232H to operate as two UART/Bit-
Bang ports plus two MPSSE engines which can be used to emulate JTAG, SPI, I
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C, Bit-bang or other
synchronous serial modes. The FT4232H datasheet,
is available at
http://ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT4232H.pdf
The block diagram of FT4232H Hub Module is shown in Figure 1.2.
Copyright © 2010 Future Technology Devices International Limited
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FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
