Datasheet GL850 Datasheet (GENESYS)

Genesys Logic, Inc.

GL850

USB 2.0

4-PORT HUB Controller

Datasheet

Revision 1.11

Jun. 25, 2003

GL850 USB 2.0 4-Port HUB Controller

Copyright:

Disclaimer:

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Trademarks:

is a registrated trademark of Genesys Logic Inc..

All trademarks are the properties of their respective owners.

Office:

Genesys Logic, Inc.

12F, No. 205, Sec. 3, Beishin Rd., Shindian City, Taipei, Taiwan Tel: (886-2) 8913-1888 Fax: (886-2) 6629-6168

http://www.genesyslogic.com

GL850 USB 2.0 4-Port HUB Controller

Revision History

Revision Date Description

1.00 05/22/2003 First formal release

1.10 06/11/2003

1.11 06/25/2003

Add Bus Power statement Gang/Individual mode setting modified

Add “4 port” bus power statement

GL850 USB 2.0 4-Port HUB Controller

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

GL850 USB 2.0 4-Port HUB Controller

5.3.1 Host Commands and Hub Answers .................................................................. 24

5.3.1.1 Standard Requests ...................................................................................... 24

5.3.1.2 Hub Class Requests .................................................................................... 25

ESCRIPTORS ............................................................................................................... 27

5.4 D

5.4.1 Full Speed Case................................................................................................... 27

5.4.1.1 Device Descriptor........................................................................................ 27

5.4.1.2 Device Qualifier Descriptor ....................................................................... 28

5.4.1.3 Configuration Descriptor ........................................................................... 28

5.4.1.4 Interface Descriptor.................................................................................... 29

5.4.1.5 Endpoint Descriptor ................................................................................... 29

5.4.1.6 Other Speed Configuration Descriptor..................................................... 30

5.4.1.7 Interface Descriptor combined with Other Speed Configuration

Descriptor .................................................................................................... 30

5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration

Descriptor .................................................................................................... 31

5.4.1.9 String Descriptor......................................................................................... 31

5.4.2 High Speed Case ................................................................................................. 32

5.4.2.1 Device Descriptor........................................................................................ 32

5.4.2.2 Device Qualifier Descriptor ....................................................................... 33

5.4.2.3 Configuration Descriptor ........................................................................... 33

5.4.2.4 Interface Descriptor.................................................................................... 34

5.4.2.5 Endpoint Descriptor in Configuration Descriptor .................................. 34

5.4.2.6 Other Speed Configuration Descriptor..................................................... 35

5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor............. 35

5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor ............ 36

5.4.2.9 String Descriptor......................................................................................... 36

5.4.3 Hub Class Descriptor ......................................................................................... 37

CHAPTER 6 ELECTRICAL CHARACTERISTICS .................................................... 38

6.1 M

AXIMUM RATINGS .................................................................................................... 38

6.2 DC CHARACTERISTICS................................................................................................ 38

CHAPTER 7 PACKAGE DIMENSION.......................................................................... 40

GL850 USB 2.0 4-Port HUB Controller

LIST OF FIGURES

FIGURE 3.1 - PINOUT DIAGRAM ........................................................................................ 11

FIGURE 4.1 - BLOCK DIAGRAM ......................................................................................... 15

FIGURE 5.1 - OPERATING IN USB1.1 SCHEME.................................................................. 17

FIGURE 5.2 - OPERATING IN USB2.0 SCHEME.................................................................. 18

FIGURE 5.3 - RESET# (EXTERNAL RESET) SETTING AND APPLICATION........................ 19

FIGURE 5.4 - POWER ON SEQUENCE OF GL850 ................................................................ 20

FIGURE 5.5 - TIMING OF PGANG/SUSPND STRAPPING ................................................. 20

FIGURE 5.6 - GANG MODE SETTING ............................................................................... 21

FIGURE 5.7 - SELF/BUS POWER SETTING ...................................................................... 21

FIGURE 5.8 - LED CONNECTION ...................................................................................... 22

FIGURE 5.9 - SCHEMATICS BETWEEN GL850 AND 93C46............................................... 23

FIGURE 7.1 - GL850 64 PIN LQFP PACKAGE .................................................................. 40

GL850 USB 2.0 4-Port HUB Controller

LIST OF TABLES

TABLE 3.1 - PIN LIST ......................................................................................................... 12

TABLE 3.2 - PIN DESCRIPTIONS......................................................................................... 13

TABLE 5.1 - 93C46 CONFIGURATION................................................................................ 22

ABLE 5.2 - STANDARD REQUEST LIST............................................................................. 24

T

ABLE 5.3 - HUB CLASS REQUESTS LIST.......................................................................... 25

TABLE 5.4 - DEVICE DESCRIPTOR FOR FULL SPEED ........................................................ 27

ABLE 5.5 - DEVICE QUALIFIER FOR FULL SPEED........................................................... 28

T

ABLE 5.6 - CONFIGURATION DESCRIPTOR FOR FULL SPEED......................................... 28

TABLE 5.7 - INTERFACE DESCRIPTOR FOR FULL SPEED .................................................. 29

TABLE 5.8 - ENDPOINT DESCRIPTOR FOR FULL SPEED.................................................... 29

TABLE 5.9 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR FULL SPEED ................ 30

TABLE 5.10 - OTHER SPEED INTERFACE DESCRIPTOR FOR FULL SPEED........................ 30

TABLE 5.11 - OTHER SPEED ENDPOINT DESCRIPTOR FOR FULL SPEED ......................... 31

TABLE 5.12 - STRING INDEX0 FOR FULL SPEED............................................................... 31

TABLE 5.13 - STRING INDEX1 FOR FULL SPEED............................................................... 31

TABLE 5.14 - STRING INDEX2 FOR FULL SPEED............................................................... 32

ABLE 5.15 - DEVICE DESCRIPTOR FOR HIGH SPEED...................................................... 32

T

ABLE 5.16 - DEVICE QUALIFIER FOR HIGH SPEED ........................................................ 33

ABLE 5.17 - CONFIGURATION DESCRIPTOR FOR HIGH SPEED ...................................... 33

T

ABLE 5.18 - INTERFACE DESCRIPTOR FOR HIGH SPEED................................................ 34

TABLE 5.19 - ENDPOINT DESCRIPTOR FOR HIGH SPEED ................................................. 34

ABLE 5.20 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR HIHG SPEED .............. 35

T

ABLE 5.21 - OTHER SPEED INTERFACE DESCRIPTOR FOR HIGH SPEED ....................... 35

TABLE 5.22 - OTHER SPEED ENDPOINT DESCRIPTOR FOR HIGH SPEED ......................... 36

TABLE 5.23 - STRING INDEX0 FOR HIGH SPEED............................................................... 36

TABLE 5.24 - STRING INDEX1 FOR HIGH SPEED............................................................... 36

TABLE 5.25 - STRING INDEX2 FOR HIGH SPEED............................................................... 36

ABLE 5.26 - HUB CLASS DESCRIPTOR ............................................................................ 37

T

GL850 USB 2.0 4-Port HUB Controller

TABLE 6.1 - MAXIMUM RATINGS ...................................................................................... 38

TABLE 6.2 - DC CHARACTERISTICS EXCEPT USB SIGNALS ........................................... 38

TABLE 6.3 - DC CHARACTERISTICS OF USB SIGNALS UNDER FS/LS MODE................. 38

TABLE 6.4 - DC CHARACTERISTICS OF USB SIGNALS UNDER HS MODE ...................... 39

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 1 GENERAL DESCRIPTION

GL850 is a 4-port standard Universal Serial Bus (USB) hub controller complies with Universal Serial Bus Specification Revision 2.0. GL850 can be connected to an USB1.1 host/hub or an USB2.0 host/hub. When

GL850 is connected to an USB1.1 host/hub, it works just like an USB1.1 hub; the upstream port will operate in full-speed (FS) and the downstream port can operate in full-speed or low-speed (LS). When GL850 is connected to an USB2.0 host/hub, it works as an USB2.0 hub; the upstream port will operate in high-speed (HS) and the downstream port can operate in high-speed, full-speed, or low-speed. The bandwidths of high speed, full speed, and low speed are 480 Mbps, 12 Mbps, and 1.5 Mbps respectively.

GL850 embeds an 8-bit RISC processor to manipulate the control/status registers and responds to the requests from USB host. Firmware of GL850 will control its general purpose I/O (GPIO) to access the external EEPROM and then respond to the host the customized PID and VID configured in the external EEPROM. GL850 responds to the host the default settings in the internal ROM if there exists no external EEPROM. GL850 is designed for customers with much flexibility. Customers can easily design GL850 as 4-port self/bus powered, individual/ganged mode, by setting the I/O pins of GL850 (Ref. to Chapter 5). The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM.

TT (transaction translator) is the main traffic control engine in an USB2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports. GL850 adopts single TT architecture, which shares the same TT buffer for all downstream devices.

Each downstream port of GL850 supports two-color (green/amber) status LEDs to indicate normal/abnormal status. The downstream ports of GL850 can be configured as individual mode or gang mode (4 ports as a group) for power management. Gang mode is very helpful for cost consideration, since we can use one poly-fuse, but not expensive power switch chips, to detect over current.

GL850 passes the current requirement (< 2.5mA) for bus-power mode when being suspended. The current consumption is smaller than 100mA for the GL850 silicon itself. The above requirements are necessary for a 4-port bus power hub. Under adequate PCB designing, GL850 provide a good choice for customers as a 4-port bus powered hub. Besides, GL850 can switch automatically between self-power mode and bus-power mode without re-plugging into the PC host. The slew rate control circuits and the power fail detection circuits inside this chip give better ESD and EMI abilities to GL850.

GL850 is designed mainly for stand-alone hub. It can also be integrated into PC motherboard or any other compound devices to support USB hub function.

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 2 FEATURES

Compliant to USB specification Revision 2.0

•

− 4 downstream ports

− Upstream port supports both high-speed (HS) and full-speed (FS) traffic

− Downstream ports support HS, FS, and low-speed (LS) traffic

− 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data

payload)

− Backward compatible to USB specification Revision 1.1

• On-chip 8-bit micro-processor

− RISC-like architecture

− USB optimized instruction set

− Dual cycle instruction execution

− Performance: 6 MIPS @ 12MHz

− With 64-byte RAM and 2K internal ROM

− Support customized PID, VID by reading external EEPROM

− Support downstream port configuration by reading external EEPROM

• Single Transaction Translator (TT) architecture

− Single TT shares the same TT control logics for all downstream port devices. This is the most cost

effective solution for TT

• Each downstream port supports two-color status indicator, with automatic and manual modes compliant to

USB specification Revision 2.0

• Support both individual and gang modes of power management and over-current detection for

downstream ports

• Conform to bus power requirements

• Automatic switching between self-powered and bus-powered modes

• Integrated USB2.0 transceiver

• 0.35um CMOS technology

• PLL embedded with external 12 MHz crystal

• Operate on 3.3 Volts

• Improved output drivers with slew-rate control for EMI reduction

• Internal power-fail detection for ESD recovery

• 64-pin LQFP package

• Applications:

− Stand-alone USB hub

− PC motherboard USB hub, Ducking of notebook

− Any compound device to support USB HUB function

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 3 PIN ASSIGNMENT

3.1 Pinouts

PWREN3#42OVCUR3#41PWREN4#40OVCUR4#39TEST38RESET#37DVDD36DGND35AMBER434GREEN433DP4

GREEN3

AMBER3

DGND

DVDD

GREEN2

43

44

45

46

47

48

AMBER2 49

PSELF 50

DGND 51

DVDD 52

PGANG/SUSPND 53

OVCUR2# 54

PWREN2# 55

OVCUR1# 56 25

PWREN1# 57

DGND 58

DVDD 59

GREEN1 60

AMBER1 61

AGND 62

AVDD 63

AVDD 64

3

2

1

GL850

LQFP - 64

6

7

5

4

8

9

10

11

12

13

14

32

DPH4

31

DMH4

30

DM4

29

AGND

28

AVDD

27

DP3

26

DPH3

DMH3

24

DM3

23

AGND

22

AVDD

21

XTAL2

20

XTAL1

19

AGND

18

AVDD

17

RREF

15

16

AGND

DMF0

DMH0

DPH0

DPF0

RPU

DM1

DMH1

DPH1

DP1

AVDD

AGND

DM2

DMH2

DPH2

DP2

Figure 3.1 - Pinout Diagram

GL850 USB 2.0 4-Port HUB Controller

3.2 Pin List

Table 3.1 - Pin List

Pin# Pin Name Type Pin# Pin Name Typ e Pin# Pin Name Typ e Pin# Pin Name Ty pe

1 AGND P 17 RREF B 33 DP4 B 49 AMBER2 O

2 DMF0 B 18 AVDD P 34 GREEN4 B 50 PSELF I

3 DMH0 B 19 AGND P 35 AMBER4 O 51 DGND P

4 DPH0 B 20 XTAL1 I 36 DGND P 52 DVDD P

5 DPF0 B 21 XTAL2 O 37

6 RPU B 22 AVDD P 38 RESET# I 54 OVCUR2# I

7 DM1 B 23 AGND P 39 TEST I 55 PWREN2# O

8 DMH1 B 24 DM3 B 40 OVCUR4# I 56 OVCUR1# I

9 DPH1 B 25 DMH3 P 41 PWREN4# O 57 PWREN1# O

DVDD P

53

PGANG/ SUSPND

B

10 DP1 B 26 DPH3 P 42 OVCUR3# I 58 DGND P

11 AVDD P 27 DP3 B 43 PWREN3# O 59 DVDD P

12 AGND P 28 AVDD P 44 GREEN3 B 60 GREEN1 O

13 DM2 B 29 AGND P 45 AMBER3 O 61 AMBER1 O

14 DMH2 B 30 DM4 B 46 DGND P 62 AGND P

15 DPH2 B 31 DMH4 B 47 DVDD P 63 AVDD P

16 DP2 B 32 DPH4 B 48 GREEN2 O 64 AVDD P

GL850 USB 2.0 4-Port HUB Controller

3.3 Pin Descriptions

Table 3.2 - Pin Descriptions

USB Interface

Pin# Pin Name Ty pe Description

2,3,4,5

7,8,9,10

13,14,

15,16

24,25,

26,27

30,31,

32,33

Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to

DMF0,DMH0, DPH0,DPF0 DM1,DMH1, DPH1,DP DM2,DMH2, DPH2,DP2 DM3,DMH3, DPH3,DP3 DM4,DMH4, DPH4,DP4

6 RPU B

17 RREF B

GL850 Design Guideline.

B USB signals for USPORT

B USB signals for DSPORT1

B USB signals for DSPORT2

B USB signals for DSPORT3

B USB signals for DSPORT2

RPU connects 1.5K Ω resister to 3.3V. RPU can be set to disconnected by externally resetting RESET# A 510Ω resister must be connected between RREF and analog ground (AGND).

HUB Interface

Pin# Pin Name Ty pe Description

Active low. Over current indicator for DSPORT1~

56,54,

42,40

57,55,

43,41

60,48,

44,34

61,49,

45,35

OVCUR1#~ OVCUR4#

PWREN1#~ PWREN4#

GREEN1~ GREEN4

AMBER1~ AMBER4

50 PSELF I

PGANG/

53

SUSPND

DSPORT4

I

(pu)

For GANG mode, OVCUR1# is the only over current flag for GL850 Active low. Power enable output for DSPORT1~

O

DSPORT4

(pu)

For GANG mode, PWREN1# is the only power enable output for GL850.

O

Green LED indicator for DSPORT1~DSPORT4

(pd)

Amber LED indicator for DSPORT4~DSPORT1

O

*AMBER[4~1] are also used to access the external EEPROM. For detailed information, please refer to

(pd)

Chapter 5.

0: GL850 is bus-powered.

1: GL850 is self-powered. This pin is default put in input mode after power-on reset. Individual/gang mode is strapped during this period. After the strapping period, this pin will be set to output mode, and then

B

output high for normal mode. When GL850 is suspended, this pin

(pd)

will output low. *For detailed explanation, please see Chapter 5 Input: 0: individual, 1: gang Output: 0: suspend, 1: normal

GL850 USB 2.0 4-Port HUB Controller

Clock and Reset Interface

Pin# Pin Name Ty pe Description

20 XTAL1 I 12MHz crystal clock input.

21 XTAL2 O

38 RESET# I

Pin# Pin Name Ty pe Description

39 TEST

Pin# Pin Name Ty pe Description

11,18, 22,28,

63,64

1,12,19,

23,29,

37,47,

52,59

36,46,

51,58

Note: Analog circuits are quite sensitive to power and ground noise. PCB layout must

Notation:

Type O Output

I Input

B Bi-directional

B/I Bi-directional, default input

B/O Bi-directional, default output

P Power / Ground

A Analog

SO Automatic output low when suspend

pu Internal pull up

pd Internal pull down

odpu Open drain with internal pull up

AVDD P Analog power input for analog circuits.

AGND P Analog ground input for analog circuits.

62

DVDD P Digital power input for digital circuits.

DGND P Digital ground input for digital circuits.

take care the power routing and the ground plane. For detailed information, please refer to GL850 Design Guideline.

12MHz crystal clock output.

Active low. External reset input, default pull high 100KΩ. When RESET# = low, whole chip is reset to the initial state.

System Interface

I

(pd)

0: Normal operation.

1: Chip will be put in test mode.

Power / Ground

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 4 BLOCK DIAGRAM

12MHz

D+ D-

USPORT

Transceiver

UTMI

REPEATER

PLL

FRTIMER

x40, x10

USPORT

SIE

Logic

TT (Transaction Translator)

REPEATER / TT Routing Logic

RAM

Control/Status

ROM

CPU

Register

GPIO

DSPORT1 Logic DSPORT2 Logic DSPORT3 Logic DSPORT4 Logic

DSPORT

Transceiver

D+ D-

LED/

OVCUR/

PWRENB

DSPORT DSPORT DSPORT

Transceiver Transceiver Transceiver

D+ D-

LED/

OVCUR/

PWRENB

D+ D-

LED/

OVCUR/

PWRENB

D+ D-

LED/

OVCUR/

PWRENB

Figure 4.1 - Block Diagram

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 5 FUNCTION DESCRIPTION

5.1 General

5.1.1 USPORT Transceiver

USPORT (upstream port) transceiver is the analog circuit that supports both full-speed and high-speed electrical characteristics defined in chapter 7 of USB specification Revision 2.0. USPORT transceiver will operate in full-speed electrical signaling when GL850 is plugged into a 1.1 host/hub. USPORT transceiver will operate in high-speed electrical signaling when GL850 is plugged into a 2.0 host/hub.

5.1.2 PLL (Phase Lock Loop)

Gl850 contains a 40x PLL and a 10x PLL. PLL generates the clock sources for the whole chip. The generated clocks are proven quite accurate that help in generating high speed signal without jitter.

5.1.3 FRTIMER

This module implements hub (micro)frame timer. The (micro)frame timer is derived from the hub’s local clock and is synchronized to the host (micro)frame period by the host generated Start of (micro)frame (SOF). FRTIMER keeps tracking the host’s SOF such that GL850 is always safely synchronized to the host. The functionality of FRTIMER is described in section 11.2 of USB Specification Revision 2.0.

5.1.4 μC

μC is the micro-processor unit of GL850. It is an 8-bit RISC processor with 2K ROM and 64 bytes RAM.

It operates at 6MIPS of 12Mhz clock to decode the USB command issued from host and then prepares the data to respond to the host. In addition, μC can handle GPIO (general purpose I/O) settings and reading content of EEPROM to support high flexibility for customers of different configurations of hub. These configurations include self/bus power mode setting, individual/gang mode setting, downstream port number setting, device removable/non-removable setting, and PID/VID setting.

5.1.5 UTM (USB2.0 Transceiver Macrocell Interface)

UTMI handles the low level USB protocol and signaling. It’s designed based on the Intel’s UTMI specification 1.01. The major functions of UTMI logic are to handle the data and clock recovery, NRZI encoding/decoding, Bit stuffing /de-stuffing, supporting USB2.0 test modes, and serial/parallel conversion.

5.1.6 USPORT logic

USPORT implements the upstream port logic defined in section 11.6 of USB specification Revision 2.0. It mainly manipulates traffics in the upstream direction. The main functions include the state machines of Receiver and Transmitter, interfaces between UTMI and SIE, and traffic control to/from the REPEATER and TT.

5.1.7 SIE (Serial Interface Engine)

SIE handles the USB protocol defined in chapter 8 of USB specification Revision 2.0. It co-works with μC to play the role of the hub kernel. The main functions of SIE include the state machine of USB protocol

flow, CRC check, PID error check, and timeout check. Unlike USB1.1, bit stuffing/de-stuffing is implemented in UTMI, not in SIE.

5.1.8 Control/Status register

Control/Status register is the interface register between hardware and firmware. This register contains the information necessary to control endpoint0 and endpoint1 pipelines. Through the firmware based architecture, GL850 possesses higher flexibility to control the USB protocol easily and correctly.

GL850 USB 2.0 4-Port HUB Controller

5.1.9 REPEATER

Repeater logic implements the control logic defined in section 11.4 and section 11.7 of USB specification Revision 2.0. REPEATER controls the traffic flow when upstream port and downstream port are signaling

in the same speed. In addition, REPEATER will generate internal resume signal whenever a wakeup event is issued under the situation that hub is globally suspended.

5.1.10 TT (Transaction Translator)

TT implements the control logic defined in section 11.14 ~ 11.22 of USB specification Revision 2.0. TT basically handles the unbalanced traffic speed between the USPORT (operating in HS) and DSPORTS (operating in FS/LS) of hub. GL850 adopts the single TT architecture to provide the most cost effective solution. Single TT shares the same buffer control module for each downstream port.

5.1.11 REPEATER/TT routing logic

REPEATER and TT are the major traffic control machines in the USB2.0 hub. Under situation that USPORT and DSPORT are signaling in the same speed, REPEATER/TT routing logic switches the traffic channel to the REPEATER. Under situation that USPORT is in the high speed signaling and DSPORT is in the full/low speed signaling, REPEATER/TT routing logic switches the traffic channel to the TT.

5.1.11.1 Connected to 1.1 Host/Hub

If an USB2.0 hub is connected to the downstream port of an USB1.1 host/hub, it will operate in USB1.1 mode. For an USB1.1 hub, both upstream direction traffic and downstream direction traffic are passing through REPEATER. That is, the REPEATER/TT routing logic will route the traffic channel to the REPEATER.

Traffic channel is routed to REPEATER

USB1.1 HOST/HUB

REPEATER

TT

Figure 5.1 - Operating in USB1.1 scheme

USPORToperating in FS signaling

DSPORT operating in FS/LS signaling

GL850 USB 2.0 4-Port HUB Controller

5.1.11.2 Connected to USB2.0 Host/Hub

If an USB2.0 hub is connected to an USB2.0 host/hub, it will operate in USB2.0 mode. The upstream port signaling is in high speed with bandwidth of 480 Mbps under this environment. The traffic channel will then be routed to the REPEATER when the device connected to the downstream port is signaling also in high speed. On the other hand, the traffic channel will then be routed to TT when the device connected to the downstream port is signaling in full/low speed.

USB2.0 HOST/HUB

USPORToperating in HS signaling

HS vs. HS: Traffic channel is routed to REPEATER

REPEATER TT

HS vs. FS/LS: Traffic channel is routed to TT

DSPORT operating in HS signaling

DSPORT operating in FS/LS signaling

Figure 5.2 - Operating in USB2.0 scheme

5.1.12 DSPORT logic

DSPORT (downstream port) logic implements the control logic defined in section 11.5 of USB specification Revision 2.0. It mainly manipulates the state machine, the connection/disconnection detection, over current

detection and power enable control, and the status LED control of the downstream port. Besides, it also output the control signals to the DSPORT transceiver.

5.1.13 DSPORT Transceiver

DSPORT transceiver is the analog circuit that supports high-speed, full-speed, and low-speed electrical characteristics defined in chapter 7 of USB specification Revision 2.0. In addition, each DSPORT transceiver accurately controls its own squelch level to detect the detachment and attachment of devices.

GL850 USB 2.0 4-Port HUB Controller

5.2 Configuration and I/O Settings

5.2.1 RESET# Setting

When RESET# is low enabled, the whole chip is put in initial state. In addition, RPU will disable the pull-up 1.5KΩ resister to 3.3V, which causes GL850 seems to be disconnected to the host. We suggest configure RESET# as following figure. Vbus is the 5V input from USB cable. GL850 will always be in disconnected state when USB cable is not plugged into host, even that GL850 is powered.

RESETI

Inside GL850

RESET#

C

RPU

DPF0

On PCB

Vbus(5V)

R

AVDD(3.3V)

1.5K ohm

Figure 5.3 - RESET# (External Reset) setting and application

GL850 internally contains a power on reset circuit. The power on sequence is depicted in the next picture. To fully control the reset process of GL850, we suggest the reset time applied in the external reset circuit should more than that of the internal reset circuit.

GL850 USB 2.0 4-Port HUB Controller

VCC(3.3V)

Power good voltage, 2.5~2.8V

≒ 2.7 μs

Internal reset

External reset

Figure 5.4 - Power on sequence of GL850

5.2.2 PGANG/SUSPND Setting

To save pin count, GL850 uses the same pin to decide individual/gang mode as well as to output the suspend flag. The individual/gang mode is decided in the period of 1ms after power on reset. After that period of time, this pin is changed to output mode. GL850 outputs the suspend flag once it is globally suspended. For individual mode, a pull low resister greater than 100KΩ should be placed. For gang mode,

a pull high resister greater than 100KΩ should be placed. In figure 5.6, we also depict the suspend LED indicator schematics. It should be noticed that the polarity of LED must be followed, otherwise the suspend

current will be over than the current limitation (2.5mA).

RESET#

1 ms

GANG_CTL

Input mode, strapping to decide individual or gang mode

Output mode, indicating GL850 is in normal mode or suspend mode

Figure 5.5 - Timing of PGANG/SUSPND strapping

GL850 USB 2.0 4-Port HUB Controller

GAND Mode

DVDD(3.3V)

"0": Individual Mode "1": GANG Mode

SUSPNDO

GANG_CTL

Inside GL850

100K ohm

On PCB

Suspend LED Indicator

Individual

Mode

Figure 5.6 - GANG Mode Setting

5.2.3 SELF/BUS Power Setting

GL850 can operate under bus power and conform to the power consumption limitation completely (suspend current < 2.5 mA, normal operation current < 100 mA). By setting PSELF, GL850 can be configured as a bus-power or a self-power hub.

1: Power Self

0: Power Bus

Inside GL850

PSELF

On PCB

Figure 5.7 - SELF/BUS Power Setting

GL850 USB 2.0 4-Port HUB Controller

5.2.4 LED Connections

GL850 controls the LED lighting according to the flow defined in section 11.5.3 of Universal Serial Bus Specification Revision2.0. Both manual mode and Automatic mode are supported in GL850. When GL850

is globally suspended, GL850 will turn off the LED to save power.

AMBER/GREEN

LED

DGND

Inside GL850

On PCB

Figure 5.8 - LED Connection

5.2.5 EEPROM Setting

GL850 replies to host commands by the default settings in the internal ROM. GL850 also offers the ability to reply to the host according to the settings in the external EEPROM(93C46). The following table shows the configuration of 93C46.

Table 5.1 - 93C46 Configuration

00h 01h 02h 03h 04h 05h 06h 07h

00 VID_H VID_L PID_H PID_L CHKSUM FF PORT_NO

VENDOR

08

LENGTH 10 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 18 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX

PRODUCT

20

LENGTH 28 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 30 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX

SERIAL

38

NUMBER

LENGTH 40 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 48 XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX

Note: 1. VID_H/VID_L: high/low byte of VID value

2. PID_H/PID_L: high/low byte of PID value

3. CHKSUM: CHKSUM must equal to VID_H + VID_L + PID_H + PID_L + 1,otherwise

firmware will ignore the EEPROM settings.

XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX

DEVICE

REMOVABLE

FF FF FF FF FF FF FF FF

GL850 USB 2.0 4-Port HUB Controller

4. PORT_NO: port number, value must be 1~4.

5. DEVICE REMOVALBE:

- - -

0: Device attached to this port is removable.

1: Device attached to this port is non-removable.

6. VENDOR LENGTH: offset 08h contains the length of the vendor string. Values of vendor string is contained from 09h~1fh.

7. PRODUCT LENGTH: offset 20h contains the length of product string. Values of product string is contained from 21h~37h.

8. SERIAL NUMBER LENGTH: offset 38h contains the value of serial number string. Values of serial number string is contained after offset 39h.

PORT4

REMOVABLE

PORT3

REMOVABLE

PORT2

REMOVABLE

PORT1

REMOVABLE

-

The schematics between GL850 and 93C46 is depicted in the following figures:

DVDD

AMBER1

GREEN1

AMBER2

PGANG

CS

SK

DI

DO

93C46

VCC

NC

GND

Figure 5.9 - Schematics Between GL850 and 93C46

GL850 firstly verifies the check sum after power on reset. If the check sum is correct, GL850 will take the configuration of 93C46 as part of the descriptor contents. To prevent the content of 93C46 from being over-written, amber LED will be disabled when 93C46 exists.

5.3 USB Protocols

To behave as a standard USB2.0 hub, some protocols defined in Chapter 9 and Chapter 11 of Universal Serial Bus Specification Revision 2.0 must be followed. We firstly classify these standard requests and hub

class requests in section 6.1. Descriptors are described in section 6.2, which contain the detailed information for the hub.

GL850 USB 2.0 4-Port HUB Controller

5.3.1 Host Commands and Hub Answers

An USB hub needs at least 2 endpoints to guarantee the normal operation. Endpoint 0 is the default control pipe. Endpoint 1 is the interrupt pipe.

Host gets all the information about the hub and through the control pipe. Hub information like self/bus power and gang/individual mode is all replied to host via endpoint0. Interrupt pipe is to report to the host the updated change of hub status (power change and over current change, for example) and the updated status change of all downstream ports (connect change, suspend change, over current change, etc.).

5.3.1.1 Standard Requests

Table 5.2 - Standard Request List

Request bmRequestType bRequest wValue wIndex wLength Return

GET_DESCRIPTOR (Device) GET_DESCRIPTOR (Device_Qualifier)

GET_DESCRIPTOR (Configuration)

GET_DESCRIPTOR (Other_Speed_Configur ation)

GET_DESCRIPTOR (String Index0) GET_DESCRIPTOR (String Index1) GET_DESCRIPTOR (String Index2)

SET_ADDRESS 00000000b 05h

SET_CONFIGURATIO N GET_CONFIGURATI ON

SET_INTERFACE 00000001b 0Bh 0000h 0000h 0000h Zero length packet

SET_FEATURE (Remote wakeup ability) SET_FEATURE (Endpoint0 halt) no support SET_FEATURE (Endpoint1 halt) CLEAR_FEATURE (Remote wakeup ability) CLEAR_FEATURE (Endpoint0 halt) no support

10000000b 06h 0100h 0000h 0012h

10000000b 06h 0600h 0000h 000Ah

10000000b 06h 0200h 0000h 0019h

10000000b 06h 0700h 0000h 0019h

10000000h 06h 0300h 0000h 0004h

10000000h 06h 0301h 0409h 0020h

10000000h 06h 0302h 0409h 002Ch

0000h ~

007Fh

00000000b 09h

00000000b 08h

00000000b 03h 0001h 0000h 0000h Zero length packet

00000010b 03h 0000h

00000010b 03h 0000h 0081h 0000h Zero length packet

00000000b 01h 0001h 0000h 0000h Zero length packet

00000010b 01h 0000h

0000h/

0001h 0000h

0000h 0000h Zero length packet

0000h 0001h Configuration value

0000h/

0080h

0000h/

0080h

0000h Zero length packet

Device Descriptor (Note1) Device_Qualifier Descriptor (Note1) Configuration+Interface+ Endpoint Descriptors (Note1) Other_Speed_ Configuration+Interface+ Endpoint Descriptors (Note1) String Descriptor Index0 (Note1) String Descriptor Index1 (Note1) String Descriptor Index2 (Note1)

GL850 USB 2.0 4-Port HUB Controller

CLEAR_FEATURE (Endpoint1 halt)

GET_INTERFACE 10000001b 0Ah 0000h 0000h 0001h 00h

GET_STATUS (Device) GET_STATUS (Interface) GET_STATUS (Endpoint0) no support

GET_STATUS (Endpoint1)

SET_FEATURE (Test_J) SET_FEATURE (Test_K) SET_FEATURE (Test_SE0_NAK) SET_FEATURE (Test_Packet) SET_FEATURE (Test_Force_Enable)

Note: 1. The detailed information for these descriptors is described in Section 6.2.

00000010b 01h 0000h 0081h 0000h Zero length packet

10000000b 00h 0000h 0000h 0002h Device status

10000001b 00h 0000h 0000h 0002h 0000h

10000010b 00h 0000h

10000010b 00h 0000h 0081h 0002h Endpoint1 status

00000000b 03h 0002h 0100h 0000h Zero length packet

00000000b 03h 0002h 0200h 0000h Zero length packet

00000000b 03h 0002h 0300h 0000h Zero length packet

00000000b 03h 0002h 0400h 0000h Zero length packet

00000000b 03h 0002h 0500h 0000h Zero length packet

0000h/

0080h

0002h Endpoint0 status

5.3.1.2 Hub Class Requests

Table 5.3 - Hub Class Requests List

Request bmRequestType bRequest wValue wIndex wLength Return

GetHubDesciptor 10100000b 06h 2900h 0000h 0009h Hub Descriptor (Note1)

GetHubStatus 10100000b 00h 0000h 0000h 0004h

GetPortStatus 10100011b 00h 0000h

SetPortFeature (PORT_RESET) SetPortFeature (PORT_SUSPEND) SetPortFeature (PORT_POWER) ClearHubFeature (C_HUB_OVER_CUR RENT) ClearPortFeature (PORT_ENABLE) ClearPortFeature (PORT_SUSPEND) ClearPortFeature (PORT_POWER)

ClearPortFeature (PORT_INDICATOR)

00100011b 03h 0004h

00100011b 03h 0002h

00100011b 03h 0008h

00100000b 01h 0001h 0000h 0000h Zero length packet

00100011b 01h 0001h

00100011b 01h 0002h

00100011b 01h 0008h

00100011b 01h 0016h (Note2) 0000h Zero length packet

0001h~

0004h

0001h~

0004h

0001h~

0004h

0001h~

0004h

0001h~

0004H

0001h~

0004H

0001h~

0004H

0004h

0000h Zero length packet

Hub status and change status Port status and port change status

GL850 USB 2.0 4-Port HUB Controller

ClearPortFeature (C_PORT_CONNECTI ON) ClearPortFeature (C_PORT_RESET) ClearPortFeature (C_PORT_ENABLE) ClearPortFeature (C_PORT_SUSPEND) ClearPortFeature (C_PORT_OVER_CU RRENT) SetPortFeature (PORT_TEST:TEST_J) SetPortFeature (PORT_TEST:TEST_K ) SetPortFeature (PORT_TEST: TEST_SE0_NAK) SetPortFeature (PORT_TEST: TEST_PACKET) SetPortFeature (PORT_TEST: TEST_FORCE_ENAB LE) SetPortFeature (PORT_INDICATOR)

ClearTTBuffer 00100011b 08h (Note3) 0001h 0000h Zero length packet

00100011b 01h 0010h

00100011b 01h 0014h

00100011b 01h 0011h

00100011b 01h 0012h

00100011b 01h 0013h

00100011b 03h 0015h

00100011b 03h 0016h (Note2) 0000h Zero length packet

0001h~

0004h

0001h~

0004h

0001h~

0004h

0001h~

0004h

0001h~

0004h

0101h~

0104h

0201h~

0204h

0301h~

0304h

0401h~

0404h

0501h~

0504h

0000h Zero length packet

GetTTStatus 10100011B 0Ah 0000h 0001h 08D0h? TT state

ResetTT 00100011b 09h 0000h 0001h 0000h Zero length packet

StopTT 00100011B 0Bh 0000h 0001h 0000h Zero length packet

Note: 1. Hub descriptor is described in Section 6.2.

2. High byte of wIndex is the port indicators selector code, low byte of wIndex is the port number. For detailed information, please refer to the section 11.24.2.13 of Universal Serial Bus Specification Revision 2.0.

3. The device address, endpoint number, and endpoint type of the full-/low-speed endpoint that may have a busy TT buffer must be specified in the wValue field. For detailed information, please refer to the table 11-18 of section 11.24.2.3 of Universal Serial Bus Specification Revision 2.0.

GL850 USB 2.0 4-Port HUB Controller

5.4 Descriptors

Descriptors contain all the information about the USB2.0 hub. Host asks different types of descriptors by different GET_DESCRIPTOR commands. Hub will reply to different GET_DESCRIPTOR the associated descriptors to let host know how to configure the hub. For an USB2.0 hub, the descriptors are:

 Device Descriptor

 Device Qualifier Descriptor

 Configuration Descriptor

 Interface Descriptor

 Endpoint Descriptor

 Other Speed Configuration Descriptor

 Hub Class-specific Descriptor

 String Descriptor

Descriptors replied are different between full speed and high speed for an USB2.0 hub. Once an USB2.0 hub is plugged into a host/hub, it needs to firstly decide the host/hub is an USB1.1 host/hub or an USB2.0 host/hub. If the host/hub being plugged is an USB1.1 hub, GL850 replies to the host the full speed descriptors defined in section 6.2.1. Otherwise, GL850 replies the high speed descriptors defined

in section 6.2.2. For hub class-specific descriptor, there’s no difference between full speed and high speed.

5.4.1 Full Speed Case

5.4.1.1 Device Descriptor

Hub returns Device Descriptor when GET_DESCRIPTOR (DEVICE) command is requested.

Table 5.4 - Device Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 12h 18 bytes for this descriptor - -

1 bDescriptorType 01h Device descriptor type - -

2 bcdUSB 0200h USB2.0 compliance - -

4 bDeviceClass 09h Hub class code - -

5 bDeviceSubClass 00h Subclass code - -

6 bDeviceProtocol 00h Protocol code - -

7 bMaxPacktSize0 40h

8 idVendor 05E3h

10 idProduct 0660h

12 bcdDevice xxxxh Version Control - Y

14 iManufacturer 00h Index of vendor string - Y

15 idProduct 01h Index of product string - Y

16 iSerialNumber 00h Index of serial number - Y

17 bNumConfigurations 01h Number of configuration - -

Max. packet size of endpoint0 Vendor ID of Genesys Logic Inc. Product ID of Genesys Logic Inc.

I/O

Configuration

- -

- Y

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

5.4.1.2 Device Qualifier Descriptor

Hub returns Device Qualifier Descriptor when GET_DESCRIPTOR (DEVICE_QUALIFIER) command is issued from host.

Table 5.5 - Device Qualifier for Full Speed

Offset Field Va lu e Description

0 bLength 0Ah 10 bytes for this descriptor - -

1 bDescriptorType 06h

2 bcdUSB 0200h USB2.0 compliance - -

4 bDeviceClass 09h Hub class code - -

5 bDeviceSubClass 00h Subclass code - -

6 bDeviceProtocol 01h Single TT - -

7 bMaxPacketSize0 40h

8 bNumConfigurations 01h

9 bReserved 00h Reserved for future use - -

Device qualifier descriptor type

Max. packet size for endpoint0 of other speed Number of other speed config.

I/O

Configuration

- -

EEPROM

Configuration

5.4.1.3 Configuration Descriptor

When host issues GET_DESCRIPTOR (CONFIGURATION) command to the hub, hub will return Configuration Descriptor, Interface Descriptor, and Endpoint Descriptor in combination to the host.

Table 5.6 - Configuration Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 02h

2 wTotalLength 0019h Total 25 bytes - -

4 bNumberInterface 01h Number of interfaces - -

5 bConfigurationValue 01h Configuration value - -

6 iConfiguration 00h Index of string descriptor - -

7 bmAttribute E0h

8 bMaxPower 32h Max. power = 100 mA - -

Configuration descriptor type

Can switch between self power and bus power

I/O

Configuration

- -

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

5.4.1.4 Interface Descriptor

Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION) command.

Table 5.7 - Interface Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength

1 bDescriptorType

2 bIerfaceNumber

3 bAlternateSetting

4 bNumEndpoints

5 bInterfaceClass

6 bInterfaceSubClass

7 bInterfaceProtocol

8 iInterface

9 bytes for this descriptor - -

09h

Interface descriptor type - -

04h

Interface number - -

00h

Alternate setting - -

00h

Number of endpoints - -

01h

Hub class code - -

09h

Subclass code - -

00h

Protocol code - -

00h

Index of string descriptor - -

00h

I/O

Configuration

EEPROM

Configuration

5.4.1.5 Endpoint Descriptor

Endpoint Descriptor follows Interface Descriptor for GET_DESCRIPTOR (CONFIGURATION) command.

Table 5.8 - Endpoint Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 07h 7bytes for this descriptor - -

I/O

Configuration

EEPROM

Configuration

1 bDescriptorType 05h Endpoint descriptor type - -

2 bEpointAddress 81h Address of the endpoint - -

3 bAttribute 03h Interrupt endpoint - -

4 wMaxPacketSize 0001h

6 bInterval ffh Polling interval (ms) - -

Max. packet size of the endpoint

- -

GL850 USB 2.0 4-Port HUB Controller

5.4.1.6 Other Speed Configuration Descriptor

An USB2.0 hub returns Other Speed Configuration Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION). An USB2.0 host will issue this command when the hub plugged is an USB2.0 hub.

Table 5.9 - Other Speed Configuration Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 07h

2 wTotalLength 19h Total 25 bytes - -

4 bNumberInterface 01h Number of interfaces - -

5 bConfigurationValue 01h Configuration value - -

6 iConfiguration 00h Index of string descriptor - -

7 bmAttribute E0h

8 bMaxPower 32h Max. power = 100 mA - -

Other speed descriptor type

Can switch between self power and bus power

I/O

Configuration

- -

EEPROM

Configuration

5.4.1.7 Interface Descriptor combined with Other Speed Configuration Descriptor

Other Speed Interface Descriptor is in combination after Other Speed Configuration Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION).

Table 5.10 - Other Speed Interface Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

I/O

Configuration

EEPROM

Configuration

1 bDescriptorType 04h Interface descriptor type - -

2 bIerfaceNumber 00h Interface number - -

3 bAlternateSetting 00h Alternate setting - -

4 bNumEndpoints 01h Number of endpoints - -

5 bInterfaceClass 09h Hub class code - -

6 bInterfaceSubClass 00h Subclass code - -

7 bInterfaceProtocol 00h Single TT - -

8 iInterface 00h Index of string descriptor - -

GL850 USB 2.0 4-Port HUB Controller

5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration Descriptor

Other Speed Endpoint Descriptor is in combination after Other Speed Interface Descriptor for the command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION).

Table 5.11 - Other Speed Endpoint Descriptor for Full Speed

Offset Field Va lu e Description

0 bLength 07h 7bytes for this descriptor - -

1 bDescriptorType 05h Endpoint descriptor type - -

2 bEpointAddress 81h Address of the endpoint - -

3 bAttribute 03h Interrupt endpoint - -

4 wMaxPacketSize 0001h

6 bInterval 0Ch

Max. packet size of the endpoint Polling interval =

12

-1) X 125 us

(2

I/O

Configuration

- -

EEPROM

Configuration

5.4.1.9 String Descriptor

String Descriptor is replied for the command GET_DESCRIPTOR (STRING). Generally, one string contains the information for manufacturer and the other contains the information for the product. These strings can be configured in EERPOM. GL850 will read the data in the EEPROM to respond to the host. The information in the following table are the default settings of Genesys Logic Inc.

Table 5.12 - String Index0 for Full Speed

Offset Field Va lu e Description

0 bLength 04h 4 bytes for this descriptor - -

I/O

Configuration

EEPROM

Configuration

1 bDescriptorType 03h String descriptor type - -

2 wLangid 0409 Language : English - -

Table 5.13 - String Index1 for Full Speed

Offset Field Va lu e Description

0 bLength 16h 16 bytes for this descriptor - Y 1 bDescriptorType 03h String descriptor type - Y

Unicode encoded manufacture

2 bString

string-USB2.0 Hub as default setting

I/O

Configuration

- Y

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

Table 5.14 - String Index2 for Full Speed

Offset Field Va lu e Description

0 bLength xxh

1 bDescriptorType 03h

2 bString

Unicode encoded product string – No default setting

x bytes for this descriptor

String descriptor type

I/O

Configuration

- Y

-

EEPROM

Configuration

Y

5.4.2 High Speed Case

5.4.2.1 Device Descriptor

High Speed Device Descriptor is replied when hub is operated in high speed mode. The content of high speed Device Descriptor is almost the same as Full Speed Device Descriptor, except the bDeviceProtocol value is 01h, which means GL850 is a single TT hub.

Table 5.15 - Device Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 12h 18 bytes for this descriptor - -

1 bDescriptorType 01h Device descriptor type - -

2 bcdUSB 0200h USB2.0 compliance - -

I/O

Configuration

EEPROM

Configuration

4 bDeviceClass 09h Hub class code -

5 bDeviceSubClass 00h Subclass code -

6 bDeviceProtocol 01h Single TT -

7 bMaxPacktSize0 40h

8 idVendor 05E3h

10 idProduct 0660h

12 bcdDevice xxxxh Version Control Y

14 iManufacturer 00h Index of vendor string Y

15 idProduct 01h Index of product string - Y

16 iSerialNumber 00h Index of serial number - Y

17 bNumConfigurations 01h Number of configuration - -

Max. packet size of endpoint0 Vendor ID of Genesys Logic Inc. Product ID of Genesys Logic Inc.

-

Y

GL850 USB 2.0 4-Port HUB Controller

5.4.2.2 Device Qualifier Descriptor

High Sped Device Qualifier Descriptor contains almost the same information as the Full Speed Device Qualifier Descriptor, except that bDeviceProtocol value is 00h.

Table 5.16 - Device Qualifier for High Speed

Offset Field Va lu e Description

0 bLength 0Ah 10 bytes for this descriptor - -

1 bDescriptorType 06h

2 bcdUSB 0200h USB2.0 compliance - -

4 bDeviceClass 09h Hub class code - -

5 bDeviceSubClass 00h Subclass code - -

6 bDeviceProtocol 00h Protocol code - -

7 bMaxPacketSize0 40h

8 bNumConfigurations 01h

9 bReserved 00h Reserved for future use - -

Device qualifier descriptor type

Max. packet size for endpoint0 of other speed Number of other speed config.

I/O

Configuration

- -

EEPROM

Configuration

5.4.2.3 Configuration Descriptor

Information contained in High Speed Configuration Descriptor is the same as Full Speed Configuration Descriptor.

Table 5.17 - Configuration Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 02h

2 wTotalLength 0019h Total 25 bytes - -

4 bNumberInterface 01h Number of interfaces - -

5 bConfigurationValue 01h Configuration value - -

6 iConfiguration 00h Index of string descriptor - -

7 bmAttribute E0h

8 bMaxPower 32h Max. power = 100 mA - -

Configuration descriptor type

Can switch between self power and bus power

I/O

Configuration

- -

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

5.4.2.4 Interface Descriptor

Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION) command.

Table 5.18 - Interface Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 04h Interface descriptor type - -

2 bIerfaceNumber 00h Interface number - -

3 bAlternateSetting 00h Alternate setting - -

4 bNumEndpoints 01h Number of endpoints - -

5 bInterfaceClass 09h Hub class code - -

6 bInterfaceSubClass 00h Subclass code - -

7 bInterfaceProtocol 00h Single TT - -

8 iInterface 00h Index of string descriptor - -

I/O

Configuratio

n

EEPROM

Configuratio

n

5.4.2.5 Endpoint Descriptor in Configuration Descriptor

bInterval of High Speed Interface Descriptor is 0Ch, which is different from that of Full Speed Endpoint Descriptor.

Table 5.19 - Endpoint Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 07h 7bytes for this descriptor - -

1 bDescriptorType 05h Endpoint descriptor type - -

2 bEpointAddress 81h Address of the endpoint - -

3 bAttribute 03h Interrupt endpoint - -

4 wMaxPacketSize 01h

6 bInterval 0Ch

Max. packet size of the endpoint Polling interval =

12

(2

-1) X 125 us

I/O

Configuration

- -

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

5.4.2.6 Other Speed Configuration Descriptor

Values in all the field of High Speed Other Speed Configuration Descriptor are the same as those of Full Speed Other Speed Configuration Descriptor.

Table 5.20 - Other Speed Configuration Descriptor for Hihg Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 07h

2 wTotalLength 19h Total 25 bytes - -

4 bNumberInterface 01h Number of interfaces - -

5 bConfigurationValue 01h Configuration value - -

6 iConfiguration 00h Index of string descriptor - -

7 bmAttribute E0h

8 bMaxPower 32h Max. power = 100 mA - -

Other speed descriptor type

Can switch between self power and bus power

I/O

Configuration

- -

EEPROM

Configuration

5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor

All the values in this descriptor are the same as those in Other Speed Interface Descriptor for full speed.

Table 5.21 - Other Speed Interface Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

I/O

Configuration

EEPROM

Configuration

1 bDescriptorType 04h Interface descriptor type - -

2 bIerfaceNumber 00h Interface number - -

3 bAlternateSetting 00h Alternate setting - -

4 bNumEndpoints 01h Number of endpoints - -

5 bInterfaceClass 09h Hub class code - -

6 bInterfaceSubClass 00h Subclass code - -

7 bInterfaceProtocol 00h Protocol code - -

8 iInterface 00h Index of string descriptor - -

GL850 USB 2.0 4-Port HUB Controller

5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor

Table 5.22 - Other Speed Endpoint Descriptor for High Speed

Offset Field Va lu e Description

0 bLength 07h 7bytes for this descriptor - -

1 bDescriptorType 05h Endpoint descriptor type - -

2 bEpointAddress 81h Address of the endpoint - -

4 bAttribute 03h Interrupt endpoint - -

5 wMaxPacketSize 01h

6 bInterval FFh Polling interval (ms) - -

Max. packet size of the endpoint

I/O

Configuration

- -

5.4.2.9 String Descriptor

All the values of all the String Descriptors for high speed are the same as those for full speed.

Table 5.23 - String Index0 for High Speed

Offset Field Va lu e Description

0 bLength 04h 4 bytes for this descriptor - -

1 bDescriptorType 03h String descriptor type - -

2 wLangid 0409 Language : English - -

I/O

Configuration

EEPROM

Configuration

EEPROM

Configuration

Table 5.24 - String Index1 for High Speed

Offset Field Va lu e Description

0 bLength 16h 16 bytes for this descriptor - Y

1 bDescriptorType 03h String descriptor type - Y

Unicode encoded manufacture

2 bString

string - USB2.0 Hub as default setting

I/O

Configuration

- Y

EEPROM

Configuration

Table 5.25 - String Index2 for High Speed

Offset Field Va lu e Description

0 bLength XXh x bytes for this descriptor - Y

1 bDescriptorType 03h String descriptor type - Y

2 bString

Unicode encoded product string – No default setting

I/O

Configuration

- Y

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

5.4.3 Hub Class Descriptor

Hub Class Descriptor is replied to the host for the GET_DESCRIPTOR (HUB) command. There’s no difference in the content for full speed and high speed.

Table 5.26 - Hub Class Descriptor

Offset Field Va lu e Description

0 bLength 09h 9 bytes for this descriptor - -

1 bDescriptorType 29h Hub descriptor type - -

2 bNbrPorts 04h Number of ports - -

89h

4 wHubCharacteristics

5 bPwrOn2PwrGood 32h

6 bHubContrCurrent 64h Maximum current (mA) - -

7 bDeviceRemoveable 00h All devices are removable - -

8 bPortPwrCtrlMask FFh For compatible to USB1.0 - -

Individual mode

80h

Gang mode Time from power on to power good (2 ms)

I/O

Configuration

Y -

- -

EEPROM

Configuration

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 6 ELECTRICAL CHARACTERISTICS

6.1 Maximum Ratings

Table 6.1 - Maximum Ratings

Symbol Parameter Min. Max. Unit

VCC

VIN

V

F

Power Supply -0.5 +3.6

Input Voltage -0.5 5

Output Voltage -0.5 +3.6

OUT

Ambient Temperature under bias -60 +100

TA

Frequency

OSC

6.2 DC Characteristics

Table 6.2 - DC Characteristics Except USB Signals

Symbol Parameter Min. Ty p. Max. Unit

PD Power Dissipation mA

VDD Power Supply Voltage 3 3.3 3.6 V

VIL LOW level input voltage 0.9 V VIH HIGH level input voltage 2.0 V

V

LOW to HIGH threshold voltage 1.36 1.48 1.62 V

TLH

V

HIGH to LOW threshold voltage 1.36 1.48 1.62 V

THL

VOL LOW level output voltage when IOL=8mA 0.4 V VOH HIGH level output voltage when IOH=8mA 2.4 V

I

RDN Pad internal pull down resister 81K 103K 181K Ω

RUP Pad internal pull up resister 81K 103K 181K Ω

Leakage current for pads with internal pull up or pull

OLK

down resistor

V

o

C

12 MHz ± 100ppm

30

µA

Table 6.3 - DC Characteristics of USB Signals Under FS/LS Mode

Symbol Parameter Min. Ty p. Max. Unit

VOL DPF/DMF static output LOW(RL of 1.5K to 3.6V ) 0.3 V VOH DPF/DMF static output HIGH (RL of 15K to GND ) 2.8 3.6 V

VDI Differential input sensitivity 0.2 V

VCM Differential common mode range 0.8 2.5 V

VSE Single-ended receiver threshold 0.2 V CIN Transceiver capacitance 20 pF

ILO

Z

Hi-Z state data line leakage

Driver output resistance 28 43 Ω

DRV

-10 +10

µA

GL850 USB 2.0 4-Port HUB Controller

Table 6.4 - DC Characteristics of USB Signals Under HS Mode

Symbol Parameter Min. Ty p. Max. Unit

VIL

VIH

VIL

VIH

VOL

VOH

CIN Transceiver capacitance 20 pF

ILO Hi-Z state data line leakage -10 +10

Z

Low-level input voltage with HS termination resistor enabled, Pull-up resistor disconnected High-level input voltage with HS termination resistor enabled, Pull-up resistor disconnected Low-level input voltage with HS termination resistor enabled, Pull-up resistor connected High-level input voltage with HS termination resistor enabled, Pull-up resistor connected DPH/DMH static output LOW(R

3.6V ) DPH/DMH static output HIGH (R GND )

Driver output resistance for USB2.0 HS Ω

DRV

of 1.5K to

L

of 15K to

L

mV

0.3 V

2.8 3.6 V

µA

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 7 PACKAGE DIMENSION

D

D1

D2

D

3348

49

32

A

A2

S

5 0

. 0

A1

A

2

1

E

64

1

e

-

01

0-

02-

R1

SL

R2

0.25mm

GAGE PLANE

H

03

-

NOT ES :

1.

DI ME NSIONS D1 AND E1 DO NOT I NCL UDE M OLD PROT RUSI ON. AL LOWABL E PROT RUSI ON I S 0 .25 mm PER SI DE. D1 AND E1 ARE MAXI MUM PLAS TI C BODY SIZ E DI ME NSIONS INC LUDI NG MOL D MI SMAT CH.

2.

DI ME NSION b DOE S NOT INC LUDE DAMB AR PR OTRUSI ON. ALL OWABL E DAM BAR PROTR USION SHALL NOT CAUSE THE LE AD WI DTH T O E XCEE D T HE M AXIM UM b DIM ENSI ON BY MOR E T HAN 0 .08 mm. DAMB AR CAN N OT BE LOC ATE D ON T HE LOWE R RADI US OR T HE FOOT . MI NIM UM S PACE B ET WEE N PROT RUSI ON AND AN ADJACE NT LE AD IS 0 .07 mm.

B

17

C

ABDCaaa

BADHbbb

SE ATI NG PL ANE

ddd M C BAs sD

b

4X

16

4X

Cccc

CONTROL DIMENSIONS AR E IN MIL LI METERS.

SYMBOL

A A1 A2

D

E D1 E1 D2 E2 R1 R2

-

0

01- 02- 03-

c

L L1

S

b

e

MILLIMETER INCH

MIN. NOM. MA X. MAX.MIN. NOM.

1.60

1.40

3.5

12 12

0.60

0.15

0.053

1.45

0.003

0.20 0.003 7

0 0

11

13

11

13

0.20

0.004

0.75

0.018

0.472 BASIC

0.393 BASIC

0.295 BASIC

3.5

12 12

0.024

0.05

1.35

12.00 BASIC

10.00 BASIC

7.50 BASIC

0.08

0.08 0 0

11 11

0.09

0.45

0.002

1.00 REF 0.039 REF

0.20

0.17

0.50 BASIC

0.20

0.27

0.008

0.007

0.020 BASIC

0.008

TOLERANC ES OF FORM AN D POSITION aaa bbb ccc ddd

0.20

0.08

0.008

0.003

1 L

c

0.063

0.006

0.0570.055

0.008 7

13 13

0.008

0.030

0.011

Figure 7.1 - GL850 64 Pin LQFP Package

Datasheet GL850 Datasheet (GENESYS)

Specifications and Main Features

Frequently Asked Questions

User Manual