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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 board 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.

In order to work with Xilinx tools special order must be used, in that case the EEPROM is pre-programmed and serialized and will be recognized by all Xilinx tools (ISE/Impact/Chipscope, Vivado Programmer/SDK..).

Following table describes the possible operation modes of the TE0790 adapter board. The operation modes ared determined by the configuration of the FT2232H, which is done by programing the Configuration EEPROM and the System Controller CPLD:

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By programing the firmware of the SC CPLD and special EEPROM configurations further further functionalities are available of the FTDI chip which converts signals from USB2.0 to a variety of standard serial and parallel interfaces. Refer to the FTDI data sheet to get information about the capacity of the FT2232H IC.

Configuration EEPROM

The external EEPROM can be used to customize the TE0790 adapter board by setting numerous parameters of the FT2232H IC, enabling different functionalities and configuring serial or parallel interfaces.

The EEPROM is programmable in-circuit over USB using a utility program called FT_PROG available from FTDI’s web site (www.ftdichip.comIn order to work with Xilinx tools special order must be used, in that case the EEPROM is pre-programmed and serialized and will be recognized by all Xilinx tools (ISE/Impact/Chipscope, Vivado Programmer/SDK..).

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