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During the production phase, FTDI chip should be configured with correct parameters to provide correct functionality and maximum performance.
The following FTDI chip options should be configured:
- The maximal current drawn through the USB port when the device is connected;
- Pull-down IO pins In USB suspend mode;
CBUS3 pin should be configured as PWREN# in the internal MTP memory, and
used to switch the power supply to the external circuitry.
"FT_Prog" Software tool used to accomplish this task. Use the following guide for configuration:
- Download and install latest "FT_Prog" software tool from provided linkthe link provided:
http://www.ftdichip.com/Support/Utilities.htm#FT_PROG
(direkt link direct link http://www.ftdichip.com/Support/Utilities/FT_Prog_v3.1.72.360%20Installer.exe)
- Connect iqGadget iqLink gadget with and start USB cable and make sure it's recognized by OS as Virtual COM Port connection.
- Start "FT_Prog" toolsoftware.
- In After the main window of "FT_Prog" tool appeared click "Scan" Button.:
- Go to "Device ->USB Config Descriptor" node in the Device-Tree Navigator and set "Max Bus Power" parameter to 500mA.
- On the same view (Device ->USB Config Descriptor) set the "Pull Down IO Pins in USB Suspend" checkbox to true.
- Go to "Device->Hardware Specific->CBUS Signals" node in the Device-Tree Navigator and set "C3: property to the "PWREN" value.
- Click “Program Devices” button in the main ToolBar or choose menu "Devices" → "Program".
- In opened window "Program Devices" make sure connected device checked in Device List and click "Programm" button one more timeto program the memory:
- Configuraion Configuration complete.
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