GL646USB

Rev. 1.4

-1-

Contents

1. GENERAL DESCRIPTION ........................................................................ 2

2. FEATURES ................................................................................................... 2

3. SYSTEM BLOCK DIAGRAM.................................................................... 4

3.1

USB 1.1 System Block Diagram ....................................................................................................4

3.2

USB 2.0 System Block Diagram ....................................................................................................4

3.3

IEEE 1394 System Block Diagram ................................................................................................4

4. FUNCTION BLOCK DIAGRAM............................................................... 5

5. HARDWARE DESCRIPTION.................................................................... 6

5.1

Pins Assignment & Mode Definition: ............................................................................................6

5.2

Pin Descriptions : ...........................................................................................................................8

5.3

Electrical Characteristics: .............................................................................................................11

6. Application Description.............................................................................. 12

7. COMMAND SET DESCRIPTION ........................................................... 21

8. Revision History .......................................................................................... 43