ft232hq Future Technology Devices International Ltd., ft232hq Datasheet - Page 13

• Manufacturer Part Number: ft232hq
• Description: Ft232h Single Channel Hi- Speed Usb To Multipurpose Uart/fifo Ic
• Manufacturer: Future Technology Devices International Ltd.

3.5 Pins Configurations
The following section describes the function of the configurable pins referred to in the table given in
section 3.4 which is determined by how the FT232H is configured.
3.5.1 FT232H pins used in an UART interface
The FT232H can be configured as a UART interface. When configured in this mode, the pins used and the
descriptions of the signals are shown in Table 3.6
** ACBUS I/O pins
For a functional description of this mode, please refer to section 4.3
NOTE: UART is the device default mode.
Pin No.
Table 3.6 UART Configured Pin Descriptions
13
14
15
16
17
18
19
20
21
27
28
Name
TXDEN
RXLED
TXLED
DCD#
DTR#
DSR#
RTS#
CTS#
RXD
TXD
RI#
**
**
**
Copyright © 2011 Future Technology Devices International Limited
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
Type
INPUT
INPUT
INPUT
INPUT
INPUT
TXD = transmitter output
RXD = receiver input
RTS# = Ready To send handshake output
CTS# = Clear To Send handshake input
DTR# = Data Transmit Ready modem signalling line
DSR# = Data Set Ready modem signalling line
DCD# = Data Carrier Detect modem signalling line
RI# = Ring Indicator Control Input. When the Remote Wake up
option is enabled in the EEPROM, taking RI# low can be used to
resume the PC USB Host controller from suspend.
TXDEN = (TTL level). Use to enable RS485 level converter
RXLED = Receive signalling output. Pulses low when receiving data
(RXD) from the external device (UART Interface). This should be
connected to an LED.
TXLED = Transmit signalling output. Pulses low when transmitting
data (TXD) to the external device (UART Interface). This should be
connected to an LED.
UART Configuration Description
Document No.: FT_000288
Clearance No.: FTDI #199
Datasheet Version 1.0
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