GL620USB-A Ver la hoja de datos (PDF) - Genesys Logic

Número de pieza

componentes Descripción

fabricante

GL620USB-A

GeneLink USB PC-to-PC Networking Controller

Genesys Logic 

4. Functional Description

GL620USB-A

Micro-

controller

USB Registers

&

FIFO Control

D+

D-

USB

Interface

8 Bytes FIFO

8 Byte FIFO

64 Byte FIFO

64 Byte FIFO

D+

USB

D-

Interface

Block diagram of GL620USB-A

The GL620USB-A 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

Revision 1.6

-6-

Nov. 17, 2000

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