Intel 8x931HA Advance Information Datasheet

8x931HA USB Customer Hub

Advance Information Datasheet

Product Features

■ Intel 8x931HA USB Peripheral Controller

■ 8x931HA USB Hub has One Internal

Downstream, and Four External
Downstream Ports

■ USB Hub

—Connectivity Management
—Downstream Device Connect/

Disconnect Detection

—Power Management, Including Suspend

and Resume
—Bus Fault Detection and Recovery
—Full and Low Speed Downstream

Device Support

The Intel 8x931HA USB Customer Hub (CHUB) is a hardware reference design for the USB
system designer.

The Intel 8x931HA USB CHUB incorporates a fully functional Intel 8x931HA USB Peripheral
Controller. The CHUB has undergone the same level of testing required of a commercial USB
Hub product, such as USB PlugFest compliance and Intel System Integration and Validation
testing.

■ Hardware Reference Design

—Status LED
—Self/Bus Power Switch Options
—Reset Switch
—Internal Program Memory Option
—Uses High Side Power Switch for USB

Power Management

—provides current limiting
—provides thermal shut down
—500mA minimum continous load

current per channel

This document contains information on products in the sampling and initial production phases of
development. The specifications are subject to change without notice. Verify with your local Intel
sales office that you have the latest datasheet before finalizing a design.

Order Number: 273141-003

June 1998

8x931HA USB Customer Hub

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied wa r r anty, relating to sale and/or use of Int e l pr oducts in cluding li a bility or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended fo r use in medic al , li f e saving, or life sustaining applications.

Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for

future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The 8x931HA USB Customer Hub may contain design defects or errors known as errata which may cause the product to deviate from published

specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are refere nced in this document , o r ot her Intel literature ma y be obtained by calling 1-800-

548-4725 or by visiting Intel’s website at http://www.intel.com.

Copyright © Intel Corporation, 1997
*Third-party brands and names are the property of their respective owners.

2 Advance Information Datasheet

8x931HA USB Customer Hub

Contents

1.0 Introduction..................................................................................................................5

2.0 Board Connector Interface.....................................................................................6

3.0 Functional Description.............................................................................................8

3.1 Self/Bus-Powered Operation.................................................................................8

3.2 Status LED............................................................................................................8

3.3 Internal Program Memory Option..........................................................................8

3.4 External EPROM Enabling or Disabling................................................. .............. .8

3.5 Firmware ...............................................................................................................9

3.6 Design N ot e s............ .. ........... ... ........... .. ............ ........... ... ........... .. ............ .. ...........9

3.6.1 Suspend Current...................................................................................... 9

3.6.2 Input Power Specification.......................................................................10

3.6.3 Overcur re n t T ripping ... ........... ............ .. ........... ... ........... .. ............ .. .........1 0

4.0 Mechanical Data .......................................................................................................11

4.1 Module D ime n sions.... .. .. ............ .. ............ .. ........... ... ........... ............ .. ........... ... ....11

4.2 Plastic Encasing Removal and Assembly Procedures........................................12

4.2.1 Plastic Encasing Removal......................................................................12

4.2.2 Plastic Encasing Assembly ....................................................................12

4.3 Component Specifications...................................................................................12

5.0 Bill of Materials.........................................................................................................13

6.0 Schematics.................................................................................................................15

Figures

1 Intel 8x931HA USB Customer HUB Block Diagram.................................. .. ..........6

2 Top View of CHUB ........................... .. .. .. ................. .................... ..........................6

3 Bottom Label for CHUB Device .............................................................................7

4 Top and Bottom View of CHUB Encasing...........................................................11

5 Device Dimensions..............................................................................................11

Tables

1 Electronic Information............................................................................................5

2 Related Documents...............................................................................................5

3 CHUB Connectors.................................................................................. .............. .7

4 JW2 Jumper Settings ............................................................................................8

5 JW1 Jumper Settings ............................................................................................8

6 Bill of Materials (CHUB Rev. D) .................................................. ........................14

Advance Information Datasheet 3

1.0 Introduction

The Intel 8x931HA USB Customer HUB (CHUB) is a hardware reference design for the USB
system designer.

The CHUB serves as an evaluation platform and reference design for use in constructing a USB

HUB that incorporates Intel’s 8x931HA USB Peripheral Controller.
This design was built using Intel USB Development Tools. For more information visit Intel on the

web.

Table 1. Electronic Information

8x931HA USB Customer Hub

This document, a s well as a ny upd ates or a ddendums
are available at:

A variety of product information is available at: http://developer.intel .com/design/usb
USB software su pport can be found at : http://developer.intel.com/desi gn/usb/sws up
Intel 8x931HA Customer HUB schematic s http://developer.intel.com/d esign/usb/schems
Intel USB Specification Updates http://developer.intel.com/desi gn/usb/spe cupdt
Information about USB and specifications can be

found at:

Table 2. Related Documents

Document Title Order Number

8x931AA/8x931 HA Universal Serial Bus Per ipheral
Controller D ata s h eet

8x931AA, 8x931HA Universal Serial Bus

Peripheral Controller User’s Manual
Universal Serial Bus Speci f ication, Rev. 1.0
8x931HA Universal Serial Bus Customer Hub

Specification Update

http://developer.intel .com/design/usb/manuals

http://www.usb.org

Intel Order #273108

Intel Order #273102

Intel Order #272904
Intel Order #273155

Advance Information Datasheet 5

8x931HA USB Customer Hub

Figure 1. Intel 8x931HA USB Customer HUB Block Diagram

Port0

Upstream

D0-D7

8x931 Hx

Intel USB HUB

AD0-AD7

12 MHz

Clock

Port2

Port3

Port4

Port5

Status

2.0 Board Connector Interface

Figure 2 illustrates the major components of the CHUB board. See Section 5.0 for a complete
component list.

Figure 2. Top View of CHUB

74ACT373

Latch

A8-A15

A0-A7

32Kx8

EPROM

A4601-01

FB1

S1

FB7

J3

RP4

C18

U3

R3

JW1

U2

C7

C9
C14

U4

U1

J1

C4

16V

10

C8

R1

FB16
FB18
FB20

C13

FB21

JW2

C2C1

120

C15

U5

R2

C11

C10

RP1

RP5

RP2

C12

C16

FB2
FB4
FB5
FB6

FB7
FB8

FB10
FB13
FB14
FB15

FB17
FB19

C17

FB3

FB22

J2

FB12FB11

CR1

J4

A4539-02

Figure 3 illustrates the connectors available to the user. The CHUB device will have a label on the
bottom resembling Figure 3. Table 3 describes the device connections and their specific types.

6

Advance Information Datasheet

Figure 3. Bottom Label for CHUB Device

8x931HA USB Customer Hub

Table 3. CHUB Connectors

Description Connector Type Spec

Power J1
Switch S1 Double-pole/double-throw n/a

UPSTREAM J3 Type B USB connector
Port 2 J4 Type A USB connector Self=500mA/Bus=100mA
Port 3 J4 Type A USB connector Self=500mA/Bus=100mA
Port 4 J2 Type A USB connector Self=500mA/Bus=100mA
Port 5 J2 Type A USB connector Self=500mA/Bus=100mA

Port 2

Port 3

Intel 8x931HA USB Customer HUB

NOT F.C.C. APPROVED

Self Powered:
Bus Powered:

Voltage In:

UpstreamSelf Bus+5 V

500mA/port
100mA/port

5.0V +/-2%

Input power, used for self-powered
mode

Port 4Status

Port 5

A4600-01

5.0 V +/- 2%*

* See “Design Notes” on page 9 for more information on this specification.

Advance Information Datasheet 7

8x931HA USB Customer Hub

3.0 Functional Description

The Intel 8x931HA USB Customer Hub supports self-powered and bus-powered configurations.
The CHUB has 1 upstream port, and 4 downstream ports.

3.1 Self/Bus-Powered Operation

The user must decide on which power mode of operation to use. Using the switch, the user can
toggle between Self-Powered Mode and Bus-Powered Mode.Section 3.6.2 explains the different
modes in more detail.

Note: Moving the switch to Self-Powered Mode without a power source will reset the CHUB.

3.2 Status LED

The CHUB provides an oper ation statu s indic ator LED. Thi s stat us LED will star t to bli nk once th e
CHUB is configured as a USB Device. Once configured, the blinking of the LED indicates
execution of code from either internal or external memory.

3.3 Interna l Program Memory Option

Intel’s 8x931HA USB Peripheral hub controller comes preprogrammed with an internal ROM
code which enumerates and configures the hub to a minimal default configuration. To use this
internal ROM the user must:

1.) Carefully remove plastic enclosure. (Refer to Section 4.2)

2.) Refer to Table 4 for memory options.

Table 4. JW2 Jumper Settings

Jumper Mode Description

1-2*

2-3

Externa l EPR OM
(EA#=0)

Internal ROM
(EA#=1)

Customer can use Intel supplied EPROM
(*default position) or thei r ow n EPROM.

Customer can use their own customer mask
ROM for checkout or use I ntel supplied ROM.

3.4 External EPROM Enabling or Disabling

The CHUB provides the us er wit h the capability to ena ble or dis abl e t h e ext er nal EPROM th rou gh
a hardware jumper or by using software. See the following table for more information.

Table 5. JW1 Jumper Settings (Sheet 1 of 2)

Jumper Mode Description

1-2 ROM disabled

8

Advance Information Datasheet

Hardware disabled
(CE# = 1)

Table 5. JW1 Jumper Settings (Sheet 2 of 2)

Jumper Mode Description

3-4 ROM enabled

5-6* ROM enabled

3.5 Firmware

The latest release of the 8x931HA firmware can be downloaded from the Intel software support
website listed in Table 1 on page5.

8x931HA USB Customer Hub

Enable or disable via software
(P3.1)

Hardware enabled ( *default positi on)
(CE# = 0)

Refer to Table 1 for the Intel USB Spe cif i cat ion Update websit e location to le ar n about any known
errata for the CHUB

1

specification.

3.6 Design Notes

The CHUB is only intended to provide an evaluation platform and reference design for use in
constructing a USB HUB that will incorporate Intel’s 8x931HA USB Peripheral Controller. The
CHUB is not intended to be a commercial-ready device. The intent of the CHUB is to provide a
starting point to IHVs for de velopmen t of thei r produ cts. User s of the CHUB are respons ible f or all
designs they may create with the CHUB.

Some trade-offs should be noted which were made to incorporate flexibility into the CHUB for
evaluation purposes. Because of this, some items should be noted if this design is to be used as a
base for an actual production hub. These items are listed below and may not be the only items to
consider. Users need to perform thei r own t esting of their designs to ensure that all necessar y U SB
specifications are met.

3.6.1 Suspend Current

THe CHUB is designed to provide the user the flexibility to operate in stand alone mode or in
expanded mode. Stand alone mode is defined as running firmware from on chip ROM. Expanded
mode is defined as running firmware from an external EPROM.

During validation testing in external EPROM mode, the CHUB suspend current was measured at

8.0-10.0 mA. Thi s was pri mar ily du e to th e extr a curr ent dr awn b y the EPROM and la tch. This is i n
violation of USB spec which specifies a maximum suspend current of 500 micro amps. When
running from on-chip ROM, the suspend current was well within spec.

This should not pose a problem because in an actual production hub, the ROM code would reside
in internal memory.

1. As of the printing date of this document, it was discovered that the Microsoft Memphis* Beta 3 operating system was incorrectly using the
values set in the PortPwrCtrlMask field to determine which downstream ports to issue "Set Port Power" commands to upon device

enumeration/configuration. This bug in the beta version, in conjunction with the values reported in the hub’s port power control mask
field, caused the operating system to fail to issue "Set Port Power" commands to the downstream ports on Intel’s 8x931Hx hub peripheral
controller. Refer to http://developer.intel.com/design/usb/specupdt for the prescribed workaround.

.

Advance Information Datasheet 9

8x931HA USB Customer Hub

3.6.2 Input Power Specification

CHUB is designed to run from self or bus-powered modes. Self-powered mode allows the user to
plug in a 5 Volt power supply to provide HUB power. Bus-powered mode allows the user to draw
power from the USB cable.

In Self powered mode, Intel has specified the power supply be 5.0 V +/- 2%. Typically, 5V power
supplies do not specify to this tight tolerance. Typical power supplies are +/- 5%. The CHUB will
operate an d r un wit h a 5V +/-5% power supply, but wil l not have the all ocated voltage dr op budget
allowed. Any power supply used should have the ability to provide a minimum of 2 Amps
continuous cur re nt.

The USB system designer is responsible for ensuring that the allocated Vdrop budget meets the
USB specification.

3.6.3 Overcurrent Tripping

The CHUB has been designed t o provid e a .56 0 ms delay upo n overcu rrent det ectio n. This sol ution
has helped to solve the problem of detection of false overcurrent detections (due to hot-plugging)
by delaying the input response to OVRI# by .560 ms.

Intel recommends that the USB system designer pay close attention to the method of detecting
overcurrent protection for USB systems.

10

Advance Information Datasheet

4.0 Mechanical Data

4.1 Module Dimensions

This section provi des the physical di mension s for the Intel 8x931HA USB CHUB plas tic enc asing.
Figure 4 shows the top and bottom views of the CHUB encasing. Figure 5 gives the device
dimensions and connector orientations.

Figure 4. Top and Bottom View of CHUB Encasing

Bottom portion

of case

8x931HA USB Customer Hub

Top portion
of case

Figure 5. Device Dimensions

3.0

3.20

20.9

6.0

49.1

Detail 1

13.0

13.2

Detail 1

PCB groove 2x1.5 deep

Logo

10.0

10.0

119.4

3.0

49.1

2mm overhang

2.0

2.0

6.0

5.60 thru

10.240/2mm C-sink

Detail

2

1.5

55.1

Detail 2

7.0

10.0

Detail 2

11.6

4.5

Detail

A4543-01

26.9

3

7.5

12.2

Detail 3

A4545-01

Advance Information Datasheet 11

8x931HA USB Customer Hub

4.2 Plastic Encasing Removal and Assembly Procedures

The CHUB uses a molded plastic encasing to protect the PCB. Removing and assembling the
plastic encasing requires some care since there are no screws used in the assembly of the PCB and
the plastic encasing. Refer to Figure 4 for a Top and Bottom view of the CHUB plastic enclosure.

4.2.1 Plastic Encasing Removal

The CHUB is shipped pre-assembled. The following section briefly describes the procedure for
removing the plastic encasing.

To remove the Top portion of the plastic case, the user must orient the CHUB so that the bottom
label is facing the user (upside down). Take ahold of the four corners of the Top portion of the
encasing and gently extend the sides away from the Bottom portion. This extension will cause the
Bottom portion of the encasing to free itself from the Top portion. Gently lift the Bottom portion
out, one side at a time, until the Bottom portion is completely detached from the Top portion. This
frees the PCB from the grooves located on the sides of the Top portion.

Once the top portion is removed, the PCB will sit on the bottom portion. To remove the PCB from
the Bottom portion, the user must gently extend the sides away from the Bottom portion, starting
with the side of the PCB containing the USB connectors. Once this side of the PCB is out of the

Bottom portion of the encasing, the user can lift the PCB out at a 25° angle. Be careful of the
placement of the toggle switch in respect to the Bottom portion. Pulling out the PCB without
angling it may cause damage to PCB and the Bottom portion.

4.2.2 Plastic Encasing Assembly

This secti on br iefly describes the procedure to assemble th e Top and Bott om po rt ions of th e pl as ti c
enclosure to the PCB.

Place the PCB into the Bottom portion, as depicted in Figure 4, at a 25° angle, placing the toggle
switch into its Bottom portion opening. Extend the opposite side of the Bottom portion enough to
lower the PCB into the Bot tom po rtion . Both the toggle swi tch and USB con nec tors sh ould fi t snug
into their respective openings on the Bottom portion.

Note: Be careful with the LED. The user may have to adjust the LED once the above procedure is done.

This can be done by gently pushing the LED into its Bottom portion opening.
Starting from one side, extend the Top portion such that the Top portion grooves can be placed

onto the PCB within the Bottom portion. Perform this procedure on the second side so that both
grooves on the Top portion sides are firmly holding the PCB in place. Gently push down until the
PCB snaps into place, and the Bottom and Top portions are reassembled.

4.3 Component Specifications

The CHUB uses of f-the-sh elf components. Refer to th e specific manufact urer’s d atasheet for
component specifications. See Section 5.0, “Bill of Materials”.

12

Advance Information Datasheet

5.0 Bill of Materials

This following table contains the bill of materials used in building the CHUB. Reference the

specific manufacturer’s datasheet for specifications.
Intel does not recommend or endorse any suppliers. The inclusion of this list should not be

construed as a recommendation or an endorsement of these particular suppliers.

8x931HA USB Customer Hub

Advance Information Datasheet 13

8x931HA USB Customer Hub

Item

Qty

Reference

Part

Pkg Type

P/D Num

Description11

CR1

LED

551-0207

T-1 Green R/A28

C1,C2,C3,C6,C7,C8,C10,

0.1uF

CC1206

C1206C104M5UAC

50V 20% ceramic chip cap Z5U

C1431C410uF

6032

T491C106K016AS

T491C Tant. chip cap 16 V case-C41C51uF

3216

T491A105K016AS

16V 10% T ant. chip cap case A52

C11,C9

30pF

CC0805

C0805C330J5GAC

50V 5% ceramic chip cap 64

C12,C15,C16,C17

100 uF

PCAPR140-330

94SA107X0016EBP

OSCON Radial Al Elec. 16V71

C13

0.33uF

3528

T491B475M010AS

50V 20% ceramic chip cap Z5U91

C18

1uF

CC1206

C1206C104M5UAC

16V 10% ceramic chip cap 0Z5U1012

FB1,FB2,FB3,FB7,FB9,FB12,

BLM21P300S

CR0805

BLM21P300S

30 ohm 3A 0.03 ohm DCR

FB13,FB14,FB19,FB20,FB21,

FB221110

FB4,FB5,FB6,FB8,FB10,

BLM21B201S

CR0805

BLM21B201S

200 ohm 200mA 0.7 ohm DCR

FB11,FB15,FB16,FB17,FB18121

JW1

CONN6POS

HDR2X3

68692-106

2-row unshrouded header 0.230" pins132

JW1,JW2

shuntna68786-102

Low profile 2-pin shunt clip141

JW2

JMP3POS

JMP3

90726-103

not populated155

JW3,JW4,JW6 ,JW7,JW8

shunt

68786-102

Low profile 2-pin shunt clip161J1CON2

RAPC-722

Phihong PSA-183 supply mate R/A PCB mount172

J4,J2

USB_A_Stacked

787617-2181J3USB_B

USB-B

787780-1

US B Ty pe-B thru -hole193

RP1,RP3,RP5

22 ohm

CRN8/CTS744

744083220JTR

RES ARRAY 22 OHM 8TERM 4RES SMT202

RP2,RP4

15k ohm

SIP10

CSC10A-01-153G

10 pin SIP resistor pack211R11.5k ohm

CR1206

CRCW1206

1/4 W 5% thick film chip resistor221R2470k ohm

CR1206

CRCW1206

1/4 W 5% thick film chip resistor231R3560 ohm

CR1206

CRCW1206

1/4 W 5% thick film chip resistor241S1SW DPDT

1201M2S3AQE2

DPDT Slide Switch R/A PCB mount 6A @ 120V251S2RESET

RESET

KSAOM211

SPST momentary push-button switch no261U132-pin PLCC EPROM

PLCC32

PLCC-32-SMT-TT

32-pin PLCC socket for EPROM271U127C256naTMS27PC256-12FML

32-pin PLCC EPROM281

U2X

SOCKET68naPLCC-68-SMT-TT w/o loc. posts

68-pin PLCC socket surface mount291U28x931HA

SOCKET68na8x931HA USB HUB controller301U374ACT373

SO20W

MC74ACT373AD

Octal transparent latch Advanced CMOS312

U4,U5

MIC2526-2

SO8

MIC2526-2BM

Dual USB power switch321Y112 MHz

XTALV

ATS-49 Standard 12.000 MHz

ATS-49 low profile thru-hole crystal

Table 6. Bill of Materials (CHUB Rev. D)

14

Advance Information Datasheet

6.0 Schematics

This section displays schematics for the 8x931HA CHUB board. These schematics are also on the
diskette(s) provided with this kit. These schematics may also be downloaded via the Intel web site
(see Table 1 for URL).

8x931HA USB Customer Hub

Advance Information Datasheet 15

P5V

Internal

P5V

3

JW2

2

PSEN_NOT

UPWEN_NOT

External

1

ALE

P0.0

P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0

P0.1

RP1

DGND

P0.2

DP4

123

RDP4

P0.3

DM4

RDM4

P0.4

DP5

678

RDP5

P0.5

DM5

4 5

RDM5

61
62
63
64
65
66
67
68
1
2
3
4
5
6
7
8
9

P0.6

P0.7

22 ohm

P5V

Vss2

ALE
EA#

RP5

Vccp2
Vssp1

DP3

123

RDP3

UPWEN#

PSEN#

DM3

DP2

678

4 5

RDM3

RDM2

RDP2

60

Reserved1
Reserved2

A9/P2.1/KSO9
A8/P2.0/KSO8

10

P0.7

DM2

22 ohm

RP3

123

RDP0

55

58

56

57

59

DP5

DP4

DM5

DM4

Vcc2

A15/P2.7/KSO15
A14/P2.6/KSO14
A13/P2.5/KSO13
A12/P2.4/KSO12
A11/P2.3/KSO11
A10/P2.2/KSO10

AD7/P0.7/KSI7

AD6/P0.6/KSI6

AD5/P0.5/KSI5

AD4/P0.4/KSI4

AD3/P0.3/KSI3

11

12

13

14

15

P0.3

P0.2

P0.6

P0.5

P0.4

P0.0

P0.2

P0.1

P0.3

DP0

DM0

678

22 ohm

4 5

ECAP

RDM0

53

52

54

DP0

DM0

ECAP

Vssp350Vccp151Vssp4

U2

8x931Hx

AD2/P0.2/KSI2

AD1/P0.1/KSI1

AD0/P0.0/KSI0

Vss1

Vcc119P3.0/OVRI#20P3.1/SOF#21P3.2/INT0#22P3.3/INT1#23P3.4/T0/KSO16

16

17

18

P0.0

P0.1

P3.0

P0.7

P0.4

P0.5

P0.6

49

P3.1

48

DP3

P3.2

DM3

ECAP

47

Vssp2

46

24

44

45

DP2

DM2

LED0

P3.5/T1/KSO17

P3.6/WR#/KSO18

25

26

C5

12

+

1uF

CR1

Status

LED1

PLLSEL
RESET
AVcc

XTAL2

XTAL1

LED2

LED3
P1.7/KSO7/TXD
P1.6/KSO6/RXD
P1.5/KSO5
P1.4/KSO4
P1.3/KSO3
P1.2/KSO2

P1.1/KSO1/T2EX

P1.0/KSO0/T2
P3.7/RD#/KSO19

DGND

P0.[0:7]

D

Rev

of

1 2

PWR_MODE

OVRI_NOT

10
9
8
7
6
5
4
3
2
1

RP2

15k ohm

DGND

P5V

LED

2 1

43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27

DGND

C18

1.0 uF
R3

1 2

560 ohm

1 2

P0.0

P5V

123456789

P5V

P0.1

X1

P0.2

P0.3

P0.4

RESET

Y1

P0.5

DGND

RESET

S2

12

C13

12

+

X2

12

12 MHz

1 2

12

P0.6

P0.7

OVRI# open drain

10

0.33uF

C11

C9

CEG System Engineering Boards and ASICs

5000 W. Chandler Blvd.

Chandler, AZ 85226

Intel Corporation

RESET

30pF

30pF

DGND

C3

0.1uF

12

C6

0.1uF

12

C10

0.1uF

12

C7

0.1uF

12

C2

0.1uF

12

P5V

8x931 USB CHUB CPUMEM

DGND

1

DWG NO

CAGE Code

B

Size

JW1

shunt

JW2

shunt

Sheet

Date

Drawn by

U1

Thursday, January 22, 1998

CMJ

U2X

SOCKET68

27C256

P2.[0:7]

D03D14D27D38D413D514D617D7

U3

Q02Q15Q26Q39Q412Q515Q616Q7

A2

A0

DGND

26

17

11

1

18

OC

19

A6A7A4A5A3

O013O114O215O318O419O520O621O7

G

U1

74ACT373

A011A110A29A38A47A56A65A74A829A928A1024A1127A123A1330A1431CE23OE

22

NC212NC4

NC11NC3

Vpp

32-pin PLCC EPROM

2

25

A7A6A5

A3A2A1A1A0

A4

P3.1

RP4

C1

0.1uF

12

C8

0.1uF

12

P5V

15k ohm

DGND

P3.2 High=Self-powered

P3.3 Low=Function

disabled

A[0:7]

P2.4

P2.1

P2.2

P2.5

P2.0

P2.3

P2.6

P5V

ROMNABL_NOT

P3.1

P5V

JW1

DGND

JW1

1 2

3 4

5 6

1-2 ROM Disabled

3-4 ROM Port contrl.

5-6 ROM Enabled

Intel assumes no responsibility for any errors which may

appear in the design. Intel reserves the right to modify

this design without notice.

Intel assumes no responsibility for any errors which may

appear in the design. Intel reserves the right to modify

this design without notice.

1 1

PORT-0

A

USB_B

4

UPSTREAM

123

4 4

A

PWR_MODE

OVRI_NOT

3 3

UPWEN_NOT

2 2

Power Input

Pin and

Barrel

ECAP

J1

J3

CON2

1

2

GNDEXT

P5VEXT

1 2

FB21

BLM21P300S

BLM21B201S

DGND

B

C

1 2

DGND

GND

FB18

DGND

1 2

FB20

BLM21P300S

P5VUPSTR

Bus

SW DPDT

C4

10uF

BLM21P300S

DGND

1

354

2

12

3.3 V Pullup

Full speed

1.5k ohm

1 2

1 2

12

R1

BLM21P300S

FB1

Self

6

S1

FB7

P5V

Power Mode

P5V VCC VDD

OVRI_NOT

DGND

4

MIC2526-2

OUTB

GND

5

6

PORTVCC5

ENA1FLGA2FLGB3ENB

OUTA

IN

8

7

PORTVCC4

P5V

12

R2

470k ohm

U5

P5VSWIN

P5V

B

C

DGND

U4

12

C14

0.1uF

4

MIC2526-2

OUTB

GND

5

PORTVCC3

ENA1FLGA2FLGB3ENB

OUTA

IN

7

6

8

PORTVCC2

1 2

BLM21B201S

FB16

D

Size

Drawn by

B

8x931 USB CHUB PORTS

CAGE Code

CMJ

Date

Thursday, January 22, 1998

DWG NO

1

Sheet

E

2 2

of

DP0

DM0

DM4

DP4

1 2

FB4

BLM21B201S

Intel Corporation

CEG System Engineering Boards and ASICs

5000 W. Chandler Blvd.

Chandler, AZ 85226

DGND

1 2

FB5

BLM21B201S

1 2

BLM21P300S

DGND

BLM21B201S

1 2

BLM21P300S

FB2

DOWNSTREAM

100 uF

DM5

DP5

1 2

BLM21B201S

FB6

FB3

B4

USB_A_Stacked

T4

+

12

C15

1 2

FB8

PORT-5

B1B2B3

J2

DGND

T1T2T3

PORT-4

1 2

FB12

BLM21P300S

+

12

C12

100 uF

BLM21P300S

DGND

1 2

DP2

1 2

FB15

BLM21B201S

1 2

BLM21P300S

FB9

DM2

BLM21B201S

FB14

1 2

1 2

BLM21B201S

FB17

1 2

BLM21P300S

USB_A_Stacked

DOWNSTREAM

FB13

B4

T4

DP3

DM3

FB11

DGND

1 2

BLM21B201S

PORT-3

B1B2B3

J4

DGND

T1T2T3

PORT-2

+

12

C17

100 uF

FB10

1 2

BLM21P300S

100 uF

C16

FB22

+

12

1 2

FB19

BLM21P300S

D

E

Rev

D