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RPi HUB Module Datasheet

Version 1.0

Document Reference No.: FT_000700 Clearance No.: FTDI# 297

Future Technology

Devices

International Ltd

Datasheet

RPi HUB Module

Datasheet

RPi HUB Module connects to a Raspberry-Pi computer and expands the number of interfaces that can be

accessed downstream from a Host. RPi HUB Module also provides a dual channel USB

UART/245FIFO/SPI/I

C/JTAG/GPIO interface converter.

1 Introduction

The FT2232H based RPi HUB Module is a USB to UART/245FIFO/SPI/I

C/JTAG/GPIO interface expansion

module targeted at connecting to Raspberry-Pi computer 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 FT2232H 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. Additionally, by utilising the FT2232H USB

Hi-Speed dual-port bridge chip which handles all the USB signalling and protocols, the module can easily

support up to two flexible interfacing ports. It is ideal for development purposes to quickly prove

functionality of adding USB to a target design.

This 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 chip USB hub solution. The

GL850G is a full function solution which supports both Individual/Gang power management modes and two-

colour (green/amber) status LED.

The FT2232H used on the Module is FTDI’s 5th generation of USB devices. The FT2232H is a USB 2.0 Hi-

Speed (480Mb/s) to UART/MPSSE IC. The device features two interfaces that can be configured for

asynchronous or synchronous serial communications or Parallel FIFO Interface. The two interfaces can also

be independently configured via an MPSSE engine. This allows the FT2232H to operate as two UART/Bit-Bang

ports or two MPSSE engines which can be used to emulate JTAG, SPI, I

C, Bit-bang or other synchronous

serial modes. All I/Os of the RPi HUB Module operate at 3.3V TTL and are 5V safe.

FT2232H’s MPSSE interfaces are controlled over USB, for details on MPSSE see: Application Note AN_108.

For more details on FT2232H see: FT2232H datasheet DS_FT2232H.

1.1 Ordering Information

Product Name

Order Code

Description

RPi HUB Module

RPi-HUB-Module

USB HUB and USB to dual channel multi interface converter

module designed for Raspberry Pi.

Table 1.1 – Ordering Information

Summary of content (16 pages)

PAGE 1
RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Future Technology Devices International Ltd Datasheet RPi HUB Module Datasheet RPi HUB Module connects to a Raspberry-Pi computer and expands the number of interfaces that can be accessed downstream from a Host. RPi HUB Module also provides a dual channel USB UART/245FIFO/SPI/I2C/JTAG/GPIO interface converter.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Table of Contents 1 Introduction ................................................................................... 1 1.1 2 3 Ordering Information .................................................................................... 1 Product Details ............................................................................... 3 2.1 Features ..............................................................
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 2 Clearance No.: FTDI# 297 Product Details 2.1 Features The RPi HUB Module has the following features: General:  USB 2.0 Hi-Speed compatible   One standard USB type A plug to connect to the Host UART data transfer rates from 300 baud to 12 Mbaud at 3.3V TTL levels   USB Hi-Speed FT2232H device for USBSerial/Bit bang communications.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 2.3 Functions Overview A block diagram of RPi HUB Module is illustrated in Figure 1.2. USB 2X12 Pin 2.54mm Male DIL Connector Channel A USB Type A Plug FT2232H GL850 Hi-Speed USB to Dual Channel Serial Data Converter 4 Channel Hi-Speed USB HUB USB Channel B Dual USB Type A Connector USB USB Connects to Mouse/Keyboard/ etc. USB Connects to RPi 2X12 Pin 2.54mm Male DIL Connector Figure 1.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 3 Clearance No.: FTDI# 297 Pin Out and Signal Description 3.1 Module Connector Descriptions Figure 3.1 – RPi HUB Module Connector Description (Top View) RPi HUB Module has 4 connectors on the board. The detailed descriptions of these connectors are listed in Table 3.1.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 3.2 FT2232H Pin and Signal Descriptions A list of functions available for every signal pin of the FT2232H is given in Figure 3.1.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 3.3 Module Pin and Signal Descriptions The pin descriptions of J1 and J2 are given in Table 3.2 and Table 3.3.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 In most cases, the FT2232H pin is connected directly to the associated pin on J1 or J2. There are also several LEDs available on the FT2232H Hub-I/O to indicate the status of power and USB hub port. Detailed functions of LEDs are described in Table 3.4.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 5 Clearance No.: FTDI# 297 Mechanical Details 2.54 The mechanical details of the RPi HUB Module are shown in Figure 5.1: 16.21 3.77 CN2 13.07 GL850G 33.45 CN1 25.4 FT2232H 4.39 RPi Hub Module 12 5.88 2.15 CN3 8.89 JP1 JP2 1.22 14.71 12.55 65 15.8 5.3 10.8 4.82 1.7 Figure 5.1 – RPi HUB Module Dimensions diagram All dimensions are in millimetres.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 6 Clearance No.: FTDI# 297 Schematic Diagram Figure 6.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Figure 6.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 7 Clearance No.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Appendix A – FT2232H EEPROM Configuration The RPi HUB Module utilizes an EEPROM which contains the USB configuration descriptors for the FT2232H. When the RPi HUB Module is plugged into a PC or a USB reset is performed, the PC will read these descriptors. The default values stored into the EEPROM are defined in Table 7.1.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Appendix B – References FT2232H Datasheet Application and Technical Notes Appendix C – List of Figures and Tables List of Figures Figure 3.1 – RPi HUB Module Connector Description (Top View) .............................................................. 5 Figure 5.1 – RPi HUB Module Dimensions diagram ................................................................................... 10 Figure 6.
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RPi HUB Module Datasheet Version 1.0 Document Reference No.: FT_000700 Clearance No.: FTDI# 297 Appendix D – Revision History Document Title: Document Reference No.: Clearance No.: Document Folder: Document Feedback: Version 1.