GL620USB datasheet(6/12 Pages) ETC1

Part #	GL620USB

Description	GeneLink-Lite USB PC-to-PC File Transfer Controller

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	ETC1 [List of Unclassifed Manufacturers]

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6 / 12 page

Revision 1.6

Nov. 16, 2000

-6-

GL620USB

4. Functional Description

Block diagram of GL620USB-Lite

The GL620USB-Lite is equipped with two full-speed USB ports, and each port has four endpoints to provide

different functions as follows:

Endpoint 0: control transfer

Endpoint 1: bulk-read transfer

Endpoint 2: bulk-write transfer

Endpoint 3: interrupt transfer

Two 8-bytes FIFO and four 64-bytes FIFO are built in the device as follows:

Left 8-byte FIFO: provide a pipe to link left endpoint 0 and right endpoint 3. For example, if left host wants

to communicate with right host, left host can issue a no data control transfer and the setup command will be stored

64 Byte FIFO

8 Byte FIFO

8 Bytes FIFO

USB

Interface

USB

Interface

Micro-

controller

USB Registers

FIFO Control

D+

D-

D+

D-

GL620USB Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers