DS_FT2232D Datasheet, PDF (35/61 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd

Document No.: FT_000173
FT2232D DUAL USB TO SERIAL UART/FIFO IC Datasheet
Version 2.05
Clearance No.: FTDI# 127
provided to allow the cable to be terminated if the device is physically positioned at either end of the
cable.
In this example the data transmitted by the FT2232D is also received by the device that is transmitting.
This is a common feature of RS485 and requires the application software to remove the transmitted data
from the received data stream. With the FT2232D it is possible to do this entirely in hardware – simply
modify the schematic so that RXD of the FT2232D is the logical OR of the SP481 receiver output with
TXDEN using an HC32 or similar logic gate.
8.1 232 UART Mode LED Interface
Figure 8.4 Dual LED Configuration
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