FT4232H_1 FTDI [Future Technology Devices International Ltd.], FT4232H_1 Datasheet - Page 3

• Manufacturer Part Number: FT4232H_1
• Description: USB Hi-Speed FT4232H Hub Module
• Manufacturer: FTDI [Future Technology Devices International Ltd.]

Figure 1.2 – Block diagram of FT4232H Hub Module
As the block diagram Figure 1.2 shows, the FT4232H Hub Module routes the signals from the GL850G
and FT4232H devices to two 18-pin, 0.1”, single-row headers and a dual-port USB A-type socket. This
allows easy connection to most PCB header sockets and ribbon cables.
To reduce the connector pin count, only channel A and B fan out all the 8 data signals to the 18-pin
header. For the channel C and channel D, since many designs only use the TXD/RXD/CTS/RTS signals in
UART communication, only these 4 data signals are fanned out. This meets most application
requirements.
To use the FT4232H connected to a PC , the FT4232H Hub Module requires specific USB device drivers,
available free from http://www.ftdichip.com. The drivers are used to make the FT4232H on the
Module appear as a four virtual COM ports (VCP). This then allows the user to communicate with the USB
interface via a standard PC serial emulation port (TTY). Another FTDI USB driver, the D2XX driver, can
also be used with application software to directly access the FT4232H on the Mini Module though a DLL.
The main target application for the FT4232H Hub Module is that it can be attached to the FTDI VNC2
based V2DIPx modules (there are 6 different sizes) as a expansion module. By connecting the FT4232H
Hub Module to the USB socket on the V2DIPx modules, the two modules can work as a single module to
be placed on the bread board. FT4232H Hub Module expand the interfaces of V2DIPx module with up to 3
USB ports and 4 serial ports. More information is available on the V2DIPx modules at
http://www.ftdichip.com/Products/Modules/DevelopmentModules.htm.
D ual - por t
Socket
U SB A
Copyright © 2010 Future Technology Devices International Limited
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C h. C
C h. D
FT4232H
0. 1" 18- pi n H eader
0. 1" 18- pi n H eader
C h. B
C h. A
U SB
Por t 1
Por t 2
Por t 3
Por t 4
G L850G
Document Reference No.: FT_000331
Por t 0
FT4232H Hub Module Datasheet
Clearance No.: FTDI# 174
H eader
U SB A
Version 1.0
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