USB2-H-9002-M EasySync, USB2-H-9002-M Datasheet - Page 17

• Manufacturer Part Number: USB2-H-9002-M
• Description: USB Interface IC Hi-speed USB to 4prt Srl RS232/RS485 adpt
• Manufacturer: EasySync

Specifications of USB2-H-9002-M

• Rohs: yes

3
3.1
3.1.1 USB
The USB2-H-9002-M is a downstream USB 2.0 Device and is connected via a standard USB-B client
connector to an upstream USB Host or Hub.
Table 3.1 – USB B Receptacle Pin-Out
3.1.2 RS232 Connections
Each RS232 port is connected through a 5mm terminal block connector. This is shown in the following
table:
Table 3.2 – Connections required for RS232 serial interface
In addition, RI Pin can provide +5VDC to an external device with a maximum current draw of 250mA
once the USB2-H-9002-M has been enumerated by the system.
Pin Number
Number (Channel 1
Terminal Block Pin
Connections
Shield
and Channel 2)
External Connectors
1
2
3
4
1
2
3
4
5
6
7
8
9
Case Ground
Bidirectional
Bidirectional
Pin Type
Ground
Power
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
Input or PWR output
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
Pin Type
Ground
Output
Output
Output
Input
Input
Input
Input
©2010 EasySync Ltd.
Description
TXD = Transmit Data
RXD = Receive Data
RTS = Request To Send
CTS = Clear To Send
DTR = Data Terminal Ready
DSR = Data Set Ready
DCD = Data Carrier Detect
RI = Ring Indicator or +5V DC output
GND = RS232 signal ground
Document Reference No.: ES_000046
Clearance No.: ES
Version 1.0
#33
17