USB2-F-1001 Datasheet, PDF (16/28 Pages) List of Unclassifed Manufacturers – USB2-F-1001 Full-Speed USB to 1-Port RS232 Adapter

Document Reference No.: ES_000004
USB2-F-1001 Full-Speed USB to 1-Port RS232 Adapter Data Sheet Version 1.1
Clearance No.: #72
3 Connections
3.1 External Connectors
3.1.1 USB
The USB-F-1001 is a downstream USB 2.0 Device. A standard USB Series “B” receptacle 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 3.1 – USB "B" Receptacle Pin-Out
3.1.2 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. In addition, Ring Indicator (RI) may be re-assigned to provide
+5VDC to an external device with a maximum current draw of 250mA once the USB2-F-1001 has been
enumerated by the system.
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 or +5VDC @ 250mA max
Shield
Case Ground Drain = typically connected to the host PC case
Table 3.2 – DE-9P RS232 Pin-Out
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