USB-COM232-PLUS-1 FTDI, Future Technology Devices International Ltd, USB-COM232-PLUS-1 Datasheet - Page 14

• Manufacturer Part Number: USB-COM232-PLUS-1
• Description: MODULE USB TO RS232 CONV SGL
• Manufacturer: FTDI, Future Technology Devices International Ltd
• Series: USB-COM-Plusr

Specifications of USB-COM232-PLUS-1

• Convert From (adapter End): USB-B
• Convert To (adapter End): DE-9P Male
• Features: USB to RS232 Serial Converter Assy, w/LEDs, 1MBaud
• For Use With/related Products: Windows® 2000 or higher, Linux, Max OS X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1032; USB-COM232-PLUS-1

3
3.1
3.1.1 USB
The USB-COM232-Plus1 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.
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 USB-COM232-Plus1 has
been enumerated by the system.
Table 3.2 – DE-9P RS232 Pin-Out
Pin Number
Pin Number
Connections
Shield
Shield
External Connectors
1
2
3
4
1
2
3
4
5
6
7
8
9
Input / Power
Case Ground
Case Ground
Bidirectional
Bidirectional
Pin Type
Pin Type
Ground
Ground
Output
Output
Output
Power
Input
Input
Input
Input
Copyright © 2010 Future Technology Devices International Limited
Description
VBUS – USB Power provided from upstream USB Host or Hub
D– = USB data signal, negative polarity
D+ = USB data signal, positive polarity
GND = USB signal ground
Drain = typically connected to the host PC case
Description
DCD = Data Carrier Detect
RXD = Receive Data
TXD = Transmit Data
DTR = Data Terminal Ready
GND = RS232 signal ground
DSR = Data Set Ready
RTS = Request To Send
CTS = Clear To Send
RI = Ring Indicator or +5VDC @ 250mA max
Drain = typically connected to the host PC case
Document Reference No.: FT_000118
USB-COM232-PLUS1 Datasheet
Clearance No.: FTDI# 76
Version 1.2
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