Intel USB930HxADBD User manual

USB930HxADBD

Adapter Board

User’s Manual

April 1997

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or call 1-800-879-4683

CONTENTS

1.0 INTRODUCTION .............................................................................................................. 1

2.0 INSTALLATION ................................................................................................................ 1

2.1 Installing the Adapter Board .........................................................................................1

2.2 Installing the new EPROM ...........................................................................................4

3.0 BOARD LAYOUT.............................................................................................................. 5

4.0 FEATURES....................................................................................................................... 5

4.1 CPU Foot Print .............................................................................................................5

4.2 External Clock Oscillator/Crystal ..................................................................................5

4.3 Test Points ...................................................................................................................6

4.4 Jumpers .......................................................................................................................6

4.5 Evaluation Board Interface ...........................................................................................6

4.6 Serial Communications ................................................................................................6

4.6.1 Using the External Serial Port .................................................................................7

4.6.2 Using the Internal Serial Port ..................................................................................7

5.0 8X930XX ADAPTER BOARD SCHEMATICS .................................................................. 7

FIGURES

8X930 MICROCONTROLLER LOCATION ...................................................................................2

ADAPTER BOARD ORIENTATION ..............................................................................................3

EPROM ORIENTATION ...............................................................................................................4

ADAPTER BOARD LAYOUT ........................................................................................................5

1.0 INTRODUCTION

This manual describes how to connect the USB930HxADBD daughter card to the 8x930 Family

USB Evaluation Board Rev B. The 8x930Hx chip supports one upstream USB port and four

downstream USB ports.

NOTE

Due to pin incompatibilities, this daughter card can be used with the four-port

8x930 Family USB Evaluation Board Rev B only.

2.0 INSTALLATION

2.1 Installing the Adapter Board

1. Remove the 8x930Ax device installed on the 8x930 Family USB Evaluation Board Rev B

from the U3 socket prior to installing the adapter board. Refer to Figure 1 for the location

of socket U3

2. Place the adapter on the evaluation board, ensuring that the connectors are properly

aligned, and press the adapter onto the evaluation board until the connectors are fully

engaged. Refer to Figure 2 for the correct orientation for the adapter board.

USB930HXADBD ADAPTER BOARD USER’S GUIDE

Figure 1. 8x930 Microcontroller Location

8x930 Family EVAL BD

REV B

UART Serial I/O

U10

U17

P10 P8

U18

JW22

J1J2 P9

Low

Full

VR1

GND

+5V

TP1

1P6

39 40

RESET

U15

JW1

SRAM Only

SOCKET A

A5525-01

P12V

JW3

49 50

TP3

I/O Expansion

S3 S2

RP4

RP3

U13U12U11

JW19

INT0

JW20

INT1

INT SOF

UPSTREAM

PORT

RP5

RP2

RP1

U6U5

Page

Non-Page

JW15

JW14

JW8

P5V

A12*

SOCKET B

U14

U7 JW16

TP

DM4

DP4

TP

DM3

DP3

TP

GND TP2

Port1/5

Port2

Port3

Port4

JW21

39 40

TP8

JW4

TP4

TP5

TP9

JW17

U16

TP10

TP7

TP11

JW18

JW13

JW6 JW5

JW2

JW7

TP6

Socket Justify

1-2 1-2 2-3 12 MHz12

1-2 2-3 2-3 6 MHz1.5

2-3 2-3 1-2 3 MHz

1.5

PLL2 PLL1 PLL0 Data Freq

(PLL1)

(PLL2)

JW12 (PLL0)

JW10

JW11

A12

JW9

TP

DM2

DP2

DM1

DP1

TP

JW23

GND

TP

REMOVE

microcontroller

in socket U3

USB930HXADBD ADAPTER BOARD USER’S GUIDE

Figure 2. Adapter Board Orientation

8x930 Family EVAL BD

REV B

UART Serial I/O

U10

U17

P10 P8

U18

JW22

J1J2 P9

Low

Full

VR1

GND

+5V

TP1

1P6

39 40

RESET

U15

JW1

SRAM Only

SOCKET A

A5527-01

P12V

JW3

49 50

TP3

I/O Expansion

S3 S2

RP4RP3

U13U12U11

JW19

INT0

JW20

INT1

INT SOF

UPSTREAM

PORT

RP5

RP2

RP1

U6U5

Page

Non-Page

JW15

JW14

JW8

P5V

A12

SOCKET B

U14

U7 JW16

TP

DM4

DP4

TP

DM3

DP3

TP

GND TP2

Port1/5

Port2

Port3

Port4

JW21

39 40

TP8

JW4

TP4

TP5

TP9

JW17

U16

TP10

TP7

TP11

JW18

JW13

JW6 JW5

JW2

JW7

TP6

Socket Justify

1-2 1-2 2-3 12 MHz12

1-2 2-3 2-3 6 MHz1.5

2-3 2-3 1-2 3 MHz

1.5

PLL2 PLL1 PLL0 Data Freq

(PLL1)

(PLL2)

JW12 (PLL0)

JW10

JW11

A12

JW9

TP

DM2

DP2

DM1

DP1

TP

JW23

GND

TP

39 40

1-2 1-2 2-3 1212

1-2 2-3 2-3 61.5

2-3 2-3 1-2 31.5

PLL2 PLL1 PLL0 Data Freq

3940

10µ

16v

USB930HXADBD ADAPTER BOARD USER’S GUIDE

2.2 Installing the new EPROM

If an EPROM is included in the upgrade package, you must use it to replace the EPROM that is

installed in Socket A of the evaluation board. This upgraded EPROM has the same pinout as the

original, however, it contains new RISM (Reduced Instruction Set Monitor) code. No jumper

changes are required.

NOTE

Socket A can accept either a 32K, 64K, or 128K EPROM. Because of this,

when you install the 32K EPROM provided by Intel there will be four holes

left open by the notch. See Figure 3 for the correct orientation of the EPROM.

Figure 3. EPROM Orientation

8x930 Family EVAL BD

REV B

SRA

SOCKET A

A5528-01

P12V

JW3

49 50

I/O Expansion

RP3

U13U12

U11

JW19

INT0

JW20

INT1

INT SOF

RP5

RP2

RP1

U6U5

Page

Non-Page

JW15

JW14

JW8

P5V

A12

SOCKE

U14

U7 J

TP

GND TP2

Port1/5

Port2

Port3

JW21

Socket Justify

A12

JW9

TP

DM2

DP2

DM1

DP1

Leave 4 holes

by notch OPEN

USB930HXADBD ADAPTER BOARD USER’S GUIDE

3.0 BOARD LAYOUT

Figure 4 shows the layout of the board and the major components.

Figure 4. Adapter Board Layout

4.0 FEATURES

4.1 CPU Foot Print

The Adapter Board has the foot print for a 68-pin PLCC socket to match the pinout of the

8x930Hx.

4.2 External Clock Oscillator/Crystal

Theboardprovides space for acrystal anda capacitor touse the internal oscillatorof the 8x930Hx

and also contains a clock oscillator that produces an independent external clock source for the

8x930Hx. Only one clock source can be used at a time. By default the clock oscillator is used and

the crystal and capacitor are not populated. To use the internal oscillator, you must cut Jumper

JW1 and install the appropriate crystal and capacitor.

A5526-01

Top View

Side View

Interfaces to 82930

USBM Eval Board

39 40

1-2 1-2 2-3 1212

1-2 2-3 2-3 61.5

2-3 2-3 1-2 31.5

PLL2 PLL1 PLL0 Data Freq

39 40

10µ

16v

USB930HXADBD ADAPTER BOARD USER’S GUIDE

4.3 Test Points

The board contains test points for CLK12MHZ, XTAL2, and AVCC.

4.4 Jumpers

The board contains jumpers to allow the 8x930Hx device to be reconfigured.Three 3-pin jumpers

are used to select the core operating frequency and the USB data rate. Figure 1 illustrates jumper

configurations:

JW1 allows the clock oscillator to be disconnected from the 8x930Hx so that a crystal can be

used. To install your own crystal, you must eithercut JW1or remove theexisting clock oscillator.

NOTE

When selecting 1.5Mbps with a 3MHz core, a 6MHz crystal must be installed

on the board.

4.5 Evaluation Board Interface

The 8x930Hx Adapter Board interfaces to the 8x930 Family Evaluation. Board. Rev B through

two 40-pin female headers. The headers are surface mounted on the solder side of the board. The

interface is “duplicated” physically and electrically on the component side of the board to allow

probing access.

4.6 Serial Communications

The adapter board contains the new 8x930Hx USB chip. This device has a default start-up inter-

nal frequency of 3 MHz. You can change this frequency to 12 MHz by clearing the LC bit located

in the PCON register. You can switch back to 3 MHz by setting the LC bit. Readers are encour-

aged to consult the 8x930Ax, 8x930Hx Universal Serial Bus Microcontroller User’s Manual

(order number 272949) for more information on this subject.

Table 1. Jumper Configuration

PLL2 JW4 PLL1 JW3 PLL0 JW2 USB Data

Rate Core

Frequency XTAL1

2-3 2-3 1-2 1.5 Mbps 3 MHz 6 MHz

1-2 2-3 2-3 1.5 Mbps 6 MHz 12 MHz

1-2 1-2 2-3 12 Mbps 12 MHz 12 MHz

USB930HXADBD ADAPTER BOARD USER’S GUIDE

The flexibility of frequency changes for power saving has a direct impact on baud rate and serial

communication. To allow debugging sessions without risk of board-PC communication loss, a

number of changes have been added to the RISM code. To establish communication between the

evaluation board and the debugger (Keil, PLC, or Tasking software) use either the external serial

link (recommended) or the internal serial link.

4.6.1 Using the External Serial Port

You are encouraged strongly to use the external serial port to communicate with the debugger

environment.When this serial port is used,the baud rate is 19200(makesure you set the debugger

software to use the same rate) and all internal timers are available. The internal serial port is then

free and can be used by your application. One interrupt (intr0), however, is used by the UART

and cannot be used. The priority should not be changed.

The external serial port is labeled “UART” on the board To enable this port, set the UARTC

switch to the “ON” position.

When using this port, you can set or clear the LC bit using the SETB and CLR instructions. There

are no restrictions to your code.

4.6.2 Using the Internal Serial Port

The use of the internal serial port to communicate with the debugger is not recommended. When

you use this serial port, the baud rate is fixed at 9600 (you must set the debugger software to use

the same rate) and timer-two is used by the RISM to generate the baud rate, making this timer

unavailable for your application. The internal serial port is no longer available since it used to

communicate with the debugger. Do not change the interrupt priority. The external interrupts,

intr0 and intr1, are both available.

When using this port, you can still set or clear the LC bit. However, you cannotuse the SETB and

CLR instructions to do. So you must use an extended call to a routine inside the RISM that sets

or clears the bit. Instead of using “SETB LC” you must use “ECALL 0FF0083” and instead of

using “CLR LC” use “ECALL 0FF008B”.

5.0 8X930XX ADAPTER BOARD SCHEMATICS

The pages that follow provide you with schematics for the adapter board. These files are also

available on the Intel World-Wide Web sit at www.intel.com.

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