GENESYS GL620USB-A Datasheet

GL620USB-A

GeneLink
USB PC-to-PC Networking
Controller

SPECIFICATION 1.6

Nov 17, 2000

Genesys Logic, Inc.

10F, No.11, Ln.3, Tsao Ti Wei, Shenkeng, Taipei, Taiwan
Tel: [phone] Fax: [phone]

http://www.genesyslogic.com

Your Imagination, Our Creation

Revision 1.6 Nov. 17, 2000

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GL620USB-A

Index

1. Features ............................................................................................................................ 3

2. Functional Overview........................................................................................................4

3. Applications...................................................................................................................... 5

4. Functional Description..................................................................................................... 6

5. Driver Support.................................................................................................................. 8

6. Pin Definitions and Descriptions.................................................................................... 10

7. Electrical Characteristics.................................................................................................11

7.1 Absolute Maximum Ratings (Voltages referenced to GND)..................................................................11

7.2 DC Characteristics (VCP/D+/D-)........................................................................................................11

7.3 DC Characteristics (PIN1, 2)...............................................................................................................11

7.4 DC Characteristics (PIN10, 11) ..........................................................................................................12

7.5 DC Characteristics (PIN14, 15).......................................................................................................... 12

7.6 Switching Characteristics.................................................................................................................... 12

8. Package Diagram............................................................................................................13

9. Application Circuit......................................................................................................... 14

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GL620USB-A

1. Features

l Conforms to USB 12Mbps Specification, Version 1.1
l Patented architecture
l Single chip solution for host-to-host communication
l Network driver (NDIS standard) support running on Windows 98 and Windows 2000
l Support TCP/IP, NetBEUI, IPX/SPX protocols
l Up to 8.6Mbps transfer rate
l Suitable for mobile and SOHO environment
l Tiniest solution in the market – 16-pin SOP
l On-chip 3.3V output
l 12MHz external clock
l Internal power-on reset
l Power management support

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GL620USB-A

2. Functional Overview

The GL620USB-A provides a single-chip solution for networking two or more PCs via their USB ports.
According to USB protocol, the PC is the host and the device is a slave, where the host initiates all the USB traffic
and the slave responds to the host ’s requests. In other words, a host cannot talk to another host via USB protocol;
instead, a host can only talk to one or more devices. The GL620USB-A’s patent-pending architecture overcomes
the USB inherently incompatibility of connecting two or more PCs by providing two independent USB
transceivers and SIEs for each host, i.e., data can be transferred in both directions simultaneously.

System Diagram

GL620USB-A

PC A PC B

USB Connection USB Connection

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GL620USB-A

3. Applications

The windows network driver software comes with GL620USB-A can connect 2 or more PCs via USB ports easily.
Genesys Logic also provides Macintosh driver software for GL620USB-A and supports the direct connection
between two Macintosh machines. The plug-and-play nature of USB protocol makes the installation and usage of
end products very simple.

Working with a full-featured windows driver, the GL620USB-A can perform the following functions between
two or more PCs:

l File transfer
l Ethernet emulation
l Storage device sharing: hard drive, CD-ROM, floppy, …
l Printer sharing
l Internet sharing

Working with a full-featured Macintosh driver, the GL620USB-A can perform the following functions between
two Macintosh machines:

l Ethernet emulation
l Storage device sharing: hard drive, CD-ROM, floppy, …
l Printer sharing

Working with GL620USB-A and its Windows/Macintosh drivers, PC can provide Internet sharing to Macintosh.
GL620USB-A doesn’t support file transfer/sharing function between PC and Macintosh except that the extra
third-party software is installed.

The GL620USB-A networking function can be integrated with the following form factors:

l USB standalone cable
l USB standalone hub
l USB monitor with hub
l PC host