UMFT12XEV FTDI, UMFT12XEV Datasheet - Page 16

• Manufacturer Part Number: UMFT12XEV
• Description: Interface Development Tools MAIN BOARD FOR EVAL FT120, FT121, FT122
• Manufacturer: FTDI
• Type: USB Controllersr

Specifications of UMFT12XEV

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: FT120, FT121, FT122
• Interface Type: SPI, UART
• Operating Supply Voltage: 5 V
• Description/function: Main board for evaluating FT120, FT121 and FT122 add-on modules

5
The UMFT12XEV is pre-loaded with a default firmware. The firmware can auto-detect the daughter card
type, and the LPC1114 MCU can communicate to the FT12 series with either SPI(for FT121) or parallel
(for FT120 or FT122) protocol. For bus-powered configuration (default setting), the FT12x evaluation kit
will power on when the USB cable is plugged in. LED D4 (red) on the main board will be ON, indicating
the 3.3V power is ready. The D2 and D3 LEDs (red) will be flashing, indicating the firmware is up and
running. For UMFT120DC and UMFT122DC, the LED D1 (green) on the daughter card will be tunred ON
upon successful enumeration, and blinking when there are USB transactions.
The default firmware supports USB CDC class driver. Upon enumeration a virtual COM port is present on
the PC. User can run serial port applications such as serial loopback test, teraterm, hyperterm etc.
5.1
Follow the steps below to run the serial loopback test over the FT12x USB serial port interface.
Figure 5-1 Serial Loopback Test
5.2
The FT121 and FT122 supports USB Charger (Wall Charger or Dedicated Charging Port) detection. The
USB Charger shall have micro-B plug with its D+/D- pins shorted.
Running demo tests
Serial Loopback test
USB Charger test
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Install the serial loopback test utility. Download v1.10 of the serial loopback test utility at
http://www.madsencircuits.com/serial_loopback.html
Start the loopback test by clicking All Programs -> Serial Loopback Test -> Serial Loopback
Test.
Select the Serial Port number from the pull-down list. In this example COM25 is selected.
Click “Start Test” button. The utility will send data to the FT12x USB serial port, receive
back from the same serial port, and perform the comparisson of the received data from the
sent one. The FT12x Evaluation kit firmware will route all the received data back to the PC
internally (the firmware will store the data from bulk OUT endpoint, and send it back when
the bulk IN token comes).
Copyright © 2012 Future Technology Devices International Limited
Document Reference No.: FT_000728
FT12 Series Evaluation Kit Datasheet
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Clearance No.: FTDI#
Version
16
314
1.0