GL850 datasheet(4/40 Pages) ETC

4 / 40 page

GL850 USB 2.0 4-Port HUB Controller

Page 4

TABLE OF CONTENTS

CHAPTER 1 GENERAL DESCRIPTION........................................................................ 9

CHAPTER 2 FEATURES ................................................................................................. 10

CHAPTER 3 PIN ASSIGNMENT.................................................................................... 11

3.1 PINOUTS ....................................................................................................................... 11

3.2 PIN LIST........................................................................................................................ 12

3.3 PIN DESCRIPTIONS ....................................................................................................... 13

CHAPTER 4 BLOCK DIAGRAM................................................................................... 15

CHAPTER 5 FUNCTION DESCRIPTION .................................................................... 16

5.1 GENERAL...................................................................................................................... 16

5.1.1 USPORT Transceiver......................................................................................... 16

5.1.2 PLL (Phase Lock Loop) ..................................................................................... 16

5.1.3 FRTIMER ........................................................................................................... 16

5.1.4 µC ......................................................................................................................... 16

5.1.5 UTM (USB2.0 Transceiver Macrocell Interface) ............................................ 16

5.1.6 USPORT logic ..................................................................................................... 16

5.1.7 SIE (Serial Interface Engine)............................................................................. 16

5.1.8 Control/Status register ....................................................................................... 16

5.1.9 REPEATER ........................................................................................................ 17

5.1.10 TT (Transaction Translator) ........................................................................... 17

5.1.11 REPEATER/TT routing logic ......................................................................... 17

5.1.11.1 Connected to 1.1 Host/Hub ...................................................................... 17

5.1.11.2 Connected to USB2.0 Host/Hub .............................................................. 18

5.1.12 DSPORT logic ................................................................................................... 18

5.1.13 DSPORT Transceiver....................................................................................... 18

5.2 CONFIGURATION AND I/O SETTINGS .......................................................................... 19

5.2.1 RESET# Setting .................................................................................................. 19

5.2.2 PGANG/SUSPND Setting .................................................................................. 20

5.2.3 SELF/BUS Power Setting .................................................................................. 21

5.2.4 LED Connections................................................................................................ 22

5.2.5 EEPROM Setting................................................................................................ 22

5.3 USB PROTOCOLS......................................................................................................... 23

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