DS_FT312D Datasheet, PDF (9/25 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd.

DS_FT312D USB ANDROID HOST IC Datasheet
Version 1.0
Document No.: FT_000816 Clearance No.: FTDI# 331
5 UART Interface
The interface implements a standard asynchronous serial UART port with flow control, for example
RS232/422/485. The UART can support baud rates from 300 to 921600 with RTS/CTS flow control. The
UART can support baud rates from 300 to 115200 with no flow control.
Data transfer uses NRZ (Non-Return to Zero) data format consisting of 1 start bit, 7 or 8 data bits, an
optional parity bit, and one or two stop bits. When transmitting the data bits, the least significant bit is
transmitted first. Transmit and receive waveforms are illustrated in Figure 5-1 and Figure 5-2:
Figure 5-1 UART Receive Waveform
Figure 5-2 UART Transmit Waveform
Baud rate (default =9600 baud), flow control settings (default = None), number of data bits (default=8),
parity (default is no parity) and number of stop bits (default=1) are all configurable from the Android
application. Please refer to ftdichip document number FT_000532 for further details.
http://www.ftdichip.com
TX_ACTIVE is transmit enable, this output may be used in RS485 designs to enable the line driver for
transmit mode.
UART RX buffer size is 5512 bytes and UART TX buffer size is 256 bytes.
Note: UART software flow control with XON/XOFF is not supported
UART hardware flow control with DTR/DSR is not supported
Copyright © 2013 Future Technology Devices International Limited
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