Phihong USA Corporation • 47800 Fremont Blvd. Fremont, CA 94538 • Tel: 1.510.445.0100 Fax: 1.510.445.1678
www.phihong.com or www.midspans.com
-16-
USB Device (Midspan)
Internal Function
Connects USB Port (PC) to
device (Midspan) via USB Cable
Internal USB device (Midspan)
sends a signal to your PC,
creating a “
Virtual COM
Port.”
A Virtual COM Port
corresponds to a serial
communication port.
Wait for the PC to respond
USB Port (PC)
The PC automatically detects
the newly installed hardware.
This function is called
Plug
& Play
, available with a USB
connection
The PC quickly identifies the
connection as
Serial Com
.
Windows will automatically
install your device on an
available serial COM port.
Changes may be made via
Device Manager. Section 3.2
discusses Device Manager.
3.2
USB Block Diagram
Figure 17: USB Block Diagram
Note:
Assume USB-to-Serial-Com Port driver is installed. Users’ PC will automatically detect the
newly installed/connected hardware.