UT232R-500 Datasheet, PDF (16/24 Pages) Future Technology Devices International Ltd. – USB to RS232 Adapter cable

Document Reference No.: FT_000341
DS_UT232R-200(500) USB TO RS232 ADAPTER CABLE Data Sheet
Version 1.0
Clearance No.: 180
4 Connections
4.1 External Connectors
4.1.1 USB
The USB-F-1001 is a downstream USB 2.0 Device. A standard USB Series “A” connector is mounted
inside the USB-F-1001 to facilitate connection to an upstream USB Host or Hub.
Pin Number Pin Type Description
1
Power
VBUS – USB Power provided from upstream USB Host or Hub
2
Bidirectional D– = USB data signal, negative polarity
3
Bidirectional D+ = USB data signal, positive polarity
4
Ground
GND = USB signal ground
Shield
Case Ground Drain = typically connected to the host PC case
Table 4.1 USB "A" Connector Pin-Out
4.1.2 RS232
The RS232 port is configured as Data Terminal Equipment (DTE), with a 9-contact D-Sub Pin connector.
Pin assignments are according to TIA/EIA-574 which formally defines the assignments for a COM port
found on many personal computers.
Pin Number Pin Type Description
1
Input
DCD = Data Carrier Detect
2
Input
RXD = Receive Data
3
Output
TXD = Transmit Data
4
Output
DTR = Data Terminal Ready
5
Ground
GND = RS232 signal ground
6
Input
DSR = Data Set Ready
7
Output
RTS = Request To Send
8
Input
CTS = Clear To Send
9
Input / Power RI = Ring Indicator
Shield
Case Ground
Table 4.2 DE-9P RS232 Pin-Out
Drain = typically connected to the host PC case
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