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Overview

The Trenz Electronic TE0790 is an universal USB2.0 to JTAG, UART and GPIO adapter based on the FTDI FT2232H USB2 IC. The adapter board converts signals from USB2.0 to standard serial or parallel interfaces of Embedded Systems like JTAG, SPI, I²C and UART.
The adapter is equipped with a programmable System Controller CPLD provided by Lattice Semiconductor LCMXO2-256HC (MachXO2 Product Family) to control the signals of the configured interfaces. The data stream of the USB2.0 port can be also converted to 8 independent GPIO's or used as FIFO.

Refer to http://trenz.org/te0790-info for the current online version documentation.

Important notice on TE0790 variants equipped with an AMD Programmer license:

  • Do not access the FT2232H EEPROM using FTDI programming tools; doing so will erase normally invisible user EEPROM content and invalidate the stored AMD Programmer license. 
  • Without this license, the adapter does not work with any AMD Software Design tool to program AMD SoC's. Software tools from the FTDI website do not warn of this risk or ask for confirmation before erasing user EEPROM content.
  • Refer to TE0790 Identification for variant identification.

Key Features

  • On Board
    • System Controller (SC) (Lattice XO2-256)
    • Mini USB for JTAG and UART connection (FTDI FT2232H)
      • USB2.0 to JTAG, SPI and I²C conversion provided by the IC's Multi Protocol Synchronous Serial Engine (MPSSE)
      • 93AA56BT EEPROM 1)
      • RX/TX red LEDs
    • 12 MHz on-board Oscillator
    • Green power-on LED
    • User button
    • Red user LED
    • DIP switch for configuration
  • Interface
    • Mini USB Type B Connector
    • 12x IO header 2.54 mm, XMOD compatible
  • Power
    • Power supply of the adapter board via Mini USB2.0 connector or user supplied via pin header J2
  • Dimension
    • XMOD form-factor 20 mm x 25 mm 
    • M3 mounting hole
  • Notes
    1) 
    Preprogrammed with FTDI configuration and on some variants with an AMD Programmer License


Block Diagram

TE0790 block diagram

Main Components

TE0790 main components
  1. FTDI USB-to-JTAG-UART converter (FT2232H), U4
  2. System Controller (LCMXO2-256HC), U1

  3. EEPROM for FTDI configuration, U10
  4. Oscillator 12 MHz, U6

  5. LED green (Power), D1

  6. LED red (User), D4

  7. LED red (UART RX), D3

  8. LED red (UART TX), D2

  9. Push button, S1

  10. 4x DIP switches, S2

  11. Mini USB Type B Connector, J4

  12. Pin Header, J2

Initial Delivery State


Storage device

Content

Notes

EEPROM, U10

FTDI configuration.

AMD Programmer License.

Adapter variants for use with AMD Development Tools store the Programmer License inside this EEPROM.

Do not overwrite! 

Refer to TE0790 Identification for variant identification.

System Controller, U1


Firmware

Visit TE0790 CPLD Firmware for further information.

Initial delivery state of programmable devices on the module

Signals, Interfaces and Pins

Connectors

Connector TypeDesignatorInterfaceIO CNTNotes

Mini USB Type B

J4USB 2.02
Pin Header 2.54 mmJ2IO8
Board Connectors

Test Points

Test PointSignalNotes
---
Test Points Information

On-board Peripherals

Chip/InterfaceDesignatorConnected ToNotes

FTDI

U4
  • Connector J4
  • SC
  • OSC U6
  • EEPROM U10

System Controller

U1
  • Connector J2
  • FTDI U4
  • OSC U6
  • Push button S1
  • DIP Switch S2

Visit TE0790 CPLD Firmware for further information.

EEPROM

U10
  • FTDI U4

Adapter variants for use with AMD Development Tools store the Programmer License inside this EEPROM.

Do not overwrite!

Refer to TE0790 Identification for variant identification.

Oscillator 12MHz

U6
  • FTDI U4
  • SC

On board peripherals

Configuration and System Control Signals

Visit TE0790 CPLD Firmware for further information.

Push Button

Signal Name

Connector.Pin

Direction1)Description
PBS1IN

Visit TE0790 CPLD Firmware for further information.

1) Direction:

    • IN: Input from the point of view of this board.
    • OUT: Output from the point of view of this board.
Push button signal.

DIP switch


Signal Name

Connector.Pin / DIP switch name

Description

Direction1)


DIP setting
ONOFF


Configuration

JTAGEN

(JTAG enable)

S2.1 / S2ASelect JTAG connection between SC or IO pin header.IN

JTAG to Pin Header J2

JTAG to SC

DISEE

(Disengage

EEPROM)

S2.2 / S2B

FTDI EEPROM visibility. Must always be in OFF state.

-FTDI EEPROM not accessible.FTDI can access EEPROM/load configuration.

Power

VIO

(Variable

IO power)

S2.3 / S2CConnect the SC Bank 2 IO voltage to LDO_3V3 or 3V3 net.INOUT

Power VIO from 3.3V.

Power VIO from pin header J2.

LDO_3V3

S2.4 / S2D

Power the adapter via USB (J4) or pin header J2.

INOUTPower 3.3V from USB.Power 3.3V from pin header J2.

1) Direction:

    • IN: Input from the point of view of this board.
    • OUT: Output from the point of view of this board.
DIP switch signals.

See chapter "Recommended Power up Sequencing" expandable "Diagramm of the different Power Supply paths" for further information.

Power and Power-On Sequence

Power Rails


Power Rail Name/ Schematic NameConnector.PinDirection1)Notes
Vbus
J4.1IN
3V3J2.5IN
VIO
J2.6IN

1) Direction:

    • IN: Input from the point of view of this board.
    • OUT: Output from the point of view of this board.
Module power rails.

Recommended Power up Sequencing

 


Use Case Description and DiagramDIP S2 Setting

Direction1) 
[Connector.Pin / Net name]

J4.1 / Vbus / LDO_3V3J2.5 / 3.3VJ2.6 / VIO

USB powers the Adapter, 3.3V and VIO.

S2C = ON

S2D = ON

INOUTOUT

3.3V powers the adapter and VIO.

S2C = ON

S2D = OFF

Not connectedINOUT
USB powers the Adapter and 3.3V, VIO powered separately.

S2C = OFF

S2D = ON

INOUTIN

3.3V powers the Adapter, VIO powered separately.

S2C = OFF

S2D = OFF

Not connectedININ

Adapter powered via VIO.

S2C = ON

S2D = OFF


Not connectedOUTIN

1) Direction:

    • IN: Input from the point of view of this board.
    • OUT: Output from the point of view of this board.



SequenceNet nameRecommended Voltage RangePull-up/downDescriptionNotes
0---Configuration signal setup.

See Configuration and System Control Signals.

1---Assembly adapter into system.


2---Power Supply
Baseboard Design Hints

Technical Specifications

Absolute Maximum Ratings *)

Power Rail Name/ Schematic NameDescriptionMinMaxUnit
Vbus
Supply voltage via USB jack J4.05.5V
3.3VSupply voltage via J2 Pin Header.-0.33.75V
VIOSupply for System Controller IO Bank 2.-0.53.75V
Absolute maximum ratings

*) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these
   or any other conditions beyond those indicated under Recommended Operating Condition. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.

Recommended Operating Conditions

This TRM is generic for all variants. Temperature range can be different depending on the assembly version. Voltage range is mostly the same during variants (exceptions are possible, depending on custom request).

Temperature range

The adapter components are capable of being operated at industrial-grade temperatures, which cover at least the range of -40 °C to +85 °C.

Operating temperature range depends also on customer design and cooling solution.

Voltage rails

Power Rail Name/ Schematic NameDescriptionMinMaxUnits
Vbus
Supply voltage via USB jack J4.4.755.25V
3V3Supply voltage via J2 Pin Header.3.153.45V
VIOSupply Voltage for System Controller IO Bank 2.

2.97

3.60

V
Recommended operating conditions.

Physical Dimensions

  • Board size: 24.65 mm × 20.02 mm. Please download the assembly diagram for exact numbers.
  • PCB thickness: 1.6 mm +/- 10 %.

Physical Dimension

Currently Offered Variants 

Trenz shop TE0790 overview page*
English pageGerman page

*) The adapter is available with or without AMD Programmer License. Refer to TE0790 Identification for variant identification.

Trenz Electronic Shop Overview

Revision History

Hardware Revision History

The hardware revision number is located on the PCB next to the adapter identifier, separated by a dash.

Board hardware revision number.


DateRevisionChangesDocumentation Link
2019-0203

1) Changed FTDI chip 64 pin -> 56 pin package
2) LIB components update
3) Changed U3 (obsolete chip)
4) LEDs in package 0402 replaced by package 0603

REV03

PCN

2015-0102-REV02
-01Prototypes
Hardware Revision History

Document Change History

Date

Revision

Contributors

Description

  • Updated download links

2025-05-13

v.47

Kilian Jahn

  • Updated to TRM version 4.3
  • Updated TRM to hardware revision 03
  • Fixed Inter Page Links

  • Updated PDF & PDF-Web Link

2019-10-30

v.38John Hartfiel
  • update some link and change history

2018-01-18

v.37John Hartfiel
  • DIP-Switch description
2017-11-16

v.34

Ali Naseri
  • Updated Power supply, DIP-Switch and CPLD section

2017-10-26

v.27

John Hartfiel
  • Update 2x6 Pin Header Figure 3
  • Update Links
2017-10-19

v.26

Ali Naseri
  • Initial document
--all


  • --

Table 15: Document change history.

Disclaimer

Data Privacy

Please also note our data protection declaration at https://www.trenz-electronic.de/en/Data-protection-Privacy

Document Warranty

The material contained in this document is provided “as is” and is subject to being changed at any time without notice. Trenz Electronic does not warrant the accuracy and completeness of the materials in this document. Further, to the maximum extent permitted by applicable law, Trenz Electronic disclaims all warranties, either express or implied, with regard to this document and any information contained herein, including but not limited to the implied warranties of merchantability, fitness for a particular purpose or non infringement of intellectual property. Trenz Electronic shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein.

Limitation of Liability

In no event will Trenz Electronic, its suppliers, or other third parties mentioned in this document be liable for any damages whatsoever (including, without limitation, those resulting from lost profits, lost data or business interruption) arising out of the use, inability to use, or the results of use of this document, any documents linked to this document, or the materials or information contained at any or all such documents. If your use of the materials or information from this document results in the need for servicing, repair or correction of equipment or data, you assume all costs thereof.

Product Disclaimer

Products (incl. Software and Firmware) are exclusively designed, manufactured, and distributed for industrial applications. They are not intended, authorized, or certified for use in critical safety applications, medical devices, aerospace, nuclear, life-support, traffic-control, military, or other environments where malfunction or failure could result in personal injury, death, or significant property or environmental damage.

Trenz Electronic GmbH (“Manufacturer”) excludes any liability for inappropriate use in such contexts. The Customer bears all responsibility for verifying suitability and compliance with applicable regulations when deploying in any critical-use scenario. The Customer also agrees to indemnify and hold harmless the Manufacturer from any third-party claims or liabilities arising from such use.

Copyright Notice

No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Trenz Electronic.

Technology Licenses

The hardware / firmware / software described in this document are furnished under a license and may be used /modified / copied only in accordance with the terms of such license.

Environmental Protection

To confront directly with the responsibility toward the environment, the global community and eventually also oneself. Such a resolution should be integral part not only of everybody's life. Also enterprises shall be conscious of their social responsibility and contribute to the preservation of our common living space. That is why Trenz Electronic invests in the protection of our Environment.

REACH, RoHS and WEEE

REACH

Trenz Electronic is a manufacturer and a distributor of electronic products. It is therefore a so called downstream user in the sense of REACH. The products we supply to you are solely non-chemical products (goods). Moreover and under normal and reasonably foreseeable circumstances of application, the goods supplied to you shall not release any substance. For that, Trenz Electronic is obliged to neither register nor to provide safety data sheet. According to present knowledge and to best of our knowledge, no SVHC (Substances of Very High Concern) on the Candidate List are contained in our products. Furthermore, we will immediately and unsolicited inform our customers in compliance with REACH - Article 33 if any substance present in our goods (above a concentration of 0,1 % weight by weight) will be classified as SVHC by the European Chemicals Agency (ECHA).

RoHS

Trenz Electronic GmbH herewith declares that all its products are developed, manufactured and distributed RoHS compliant.

WEEE

Information for users within the European Union in accordance with Directive 2002/96/EC of the European Parliament and of the Council of 27 January 2003 on waste electrical and electronic equipment (WEEE).

Users of electrical and electronic equipment in private households are required not to dispose of waste electrical and electronic equipment as unsorted municipal waste and to collect such waste electrical and electronic equipment separately. By the 13 August 2005, Member States shall have ensured that systems are set up allowing final holders and distributors to return waste electrical and electronic equipment at least free of charge. Member States shall ensure the availability and accessibility of the necessary collection facilities. Separate collection is the precondition to ensure specific treatment and recycling of waste electrical and electronic equipment and is necessary to achieve the chosen level of protection of human health and the environment in the European Union. Consumers have to actively contribute to the success of such collection and the return of waste electrical and electronic equipment. Presence of hazardous substances in electrical and electronic equipment results in potential effects on the environment and human health. The symbol consisting of the crossed-out wheeled bin indicates separate collection for waste electrical and electronic equipment.

Trenz Electronic is registered under WEEE-Reg.-Nr. DE97922676.





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