REV 0.8

Evaluation Board for

MMnet01/101

User

Manual

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Contents

1 INTRODUCTION

....................................................................................................................................... 3

F

EATURES

.................................................................................................................................................... 3

2 THE BOARD .......................................................................................................................................... 4

P

LACEMENT OF ELEMENTS ON THE BOARD

................................................................................................. 4

A

RRANGEMENT ON LEAD

-

OUTS

................................................................................................................... 5

B

OARD SUPPLY

............................................................................................................................................ 5

LED

DIODES

................................................................................................................................................. 6

P

USH

-

BUTTONS

............................................................................................................................................ 6

LCD

DISPLAY

............................................................................................................................................... 7

P

OTENTIOMETERS

........................................................................................................................................ 7

B

UZZER

........................................................................................................................................................ 8

RESET

BUTTON

.......................................................................................................................................... 8

RS-232

INTERFACE

..................................................................................................................................... 9

USB

INTERFACE

........................................................................................................................................ 10

1-W

IRE

I

NTERFACE

.................................................................................................................................... 11

ISP

AND

JTAG

CONNECTORS

................................................................................................................... 11

3 TECHNICAL ASSISTANCE ............................................................................................................. 13

4 GUARANTEE ...................................................................................................................................... 13

5 BOARD LAYOUT AND DIMENSIONS ........................................................................................... 14

6 SCHEMATICS ..................................................................................................................................... 14

1

Introduction

Features

The EVBnet01 board was created with the aim of providing a hardware base for a designer of systems relying on the MMnet01/101 minimodules, allowing to realize and verify quickly one’s own ideas. Having this in mind, the board has been designed in such a way that the user has access to all terminals of the module which are led out to connectors. The board houses also such peripherals as: LEDs, push-buttons, potentiometers, a LCD display, a RS232 and USB interface, a 1-Wire connector. All these elements are accessible through pin connectors, permitting their connection with any processor port. The board has also a large prototype area which permits the designer to connect other elements in any configuration. Due to the incision (vcut) between the prototype area and the rest of the board, the prototype part can be broken off.

The board contains also a power supply which relieves the user from the need to provide a regulated supply voltage.

Together with the board, we deliver source codes of the Nut/OS together with the TCP/IP stack as well as demonstration software.

The EVBnet01 along with the MMnet01/101 minimodule can be also used in didactic laboratories of informatics colleges and universities, illustrating aspects of co-operation of electronic circuits with the Ethernet/Internet networks. It can be also used to build circuits realizing thesis projects.

• Socket for the MMnet01/101 module

• Connector with all terminals of the MMnet01/101 module

• Connectors of all peripherals accessible on board

• +5V power supply

• Power switch

• USB port (with use of MMusb232 minimodule)

• RS232 port

• 1-Wire connector

• Connector for In System Programming

• Multiplexer separating the ISP connector from the rest of the system

• JTAG connector for in system programming and debugging

• connector for 2x16 LCD display

(1)

• 8 LED diodes

• 4 push-buttons

• 2 potentiometers

• Buzzer

• Prototype design area

Notice: 1. Mounted optionally

3

2 The Board

Placement of elements on the board

Figure 1 Placement of elements on the EVBnet01 board.

1. Prototype area

2. Connector with led-out MMnet01/101 module terminals

3. MMnet01/101 minimodule

4. MMusb232 minimodule

5. RS232 connector

6. Supply connector

7. Power switch

8. Programming connector in the JTAG system

9. Programming/emulation connector in the JTAG system

10. LCD display

11. LED diodes

12. Push-buttons

13. Potentiometers

14. RESET button

15. 1-Wire connector

16. Peripheral connectors

17. Buzzer

4

Arrangement on lead-outs

Function in MMnet01/101

Name

Interrupt from RTL8019AS

DataFlash - MOSI

Bank select (optional)

Name

PE7

1

PE5

3

PE3

5

PE1

7

2

PE6

4

PE4

6

PE2

8

PE0

AREF

9

10 ADC0

ADC1

11

12 ADC2

ADC3

13

14 ADC4

ADC5

15

16 ADC6

ADC7

17

18 TOSC1

TOSC2

19

20 #RESET

PB0

21

22 PB1

PB2

23

24 PB3

PB4

25

26 PB5

PB6

27

28 PB7

PD0

29

30 PD1

PD2

31

32 PD3

PD4

33

34 PD5

PD6

35

36 PD7

LACT

37

38 LLNK

+5V

39

40 GND

Board supply

The EVBnet01 board can be supplied in two ways:

• From an external power supply with an output of 7-12 V AC or 9-15 V DC, having a standard plug with a bolt diameter of 2.1 mm, connected to supply socket J3. In case of a DC supply voltage its polarity is irrelevant. Power is supplied to the module through JP11 jumper, which allows measurment of module current consupltion. During normal operation this jumper should be cosed.

• From USB connector. In this case JP1 jumper should be closed. Board houses also USB power switch, which allows drawing up to 500mA from USB bus.

Notice: Both supply methods should not be used simultaneously.

5

Function in MMnet01/101

DataFlash – SCK

DataFlash – MISO

DataFlash – #CS

The regulated + 5 V voltage is led out to the J1 connector (+ 5V) and J14 (GND).

J3

POWER

1

2

3

4

-

BR1

RB152

+

1

+

C8

470u/25V

SW1

D2

1N4148

C13

100n

Vin Vout

U4

GND

7805

C12

100n

+

C11

47u/16V

D11

PWR

R22

1k

+5V

GND

Figure 2 Implementation of the power supply on the EVBnet01 board.

LED diodes

The EVBnet01 has 8 LED diodes which play the role of the simplest interface between the system and the user. The board is constructed in such a way that it allows any connection between the diodes and microcontroller leads. A diode lights up when a low signal level is applied to appropriate leads. The LED current flowing into the microcontroller pin is about 3 mA.

5

7

1

3

LEDn

6

8

2

4

J10

D5

D4

D3

D10

D9

D8

D7

D6

LED0

LED1

LED2

LED3

LED4

LED5

LED6

LED7

R15

1k

R14

1k

R13 1k

R12

1k

R11

1k

R10

1k

R9

1k

R8

1k

+5V

Figure 3 Implementation of LED diodes.

Push-buttons

The EVBnet01 board is equipped with four microswitches which can be connected to any lead of the microcontroller. Pushing a button causes a low state on any port terminal.

6

+5V

R19

10k

R18

10k

R17

10k

R16

10k

1

3

J12

SWn

2

4

SW0

SW1

SW2

SW3

GND

Figure 4 Implementation of push-buttons.

LCD display

EVBnet01 has place for standard 2x16 characters LCD display with HD44780 compatible controller. Display terminals D4-D7, RS, E, contrast and backlight are led to LCD connector J7. LCD connector is designed in this way, that it is possible to connect contrast signal to onboard potentiometer with use of jumpers, or with use of wire to any microcontroller pin, that can generate PWM (through RC low pass filter, which can be built on prototype area). Similarly, LCD backlight can be permanently turned on by closing jumper, or can be controlled by any microcontroller pin.

Because LCD connector contains only higher part of display bus, it has to work 4-bit mode. Also, RW line is permanently connected to ground, what allows only read operation, but it is sufficient to proper operation.

Such approach minimizes required microcontroller port pins to six.

+5V

Figure 5 Default LCD configuration

– backlight permanently turned on, contrast regulated with R5 potentiometer.

R4

7k5

R5

1k

CONTRAST

C15

100n

+5V

5

7

1

3

9

J7

GND

6

8

2

4

10

R24

1k

GND

+5V

GND

+5V

Q2

D5

D6

D7

A

K

D1

D2

D3

D4

GND

+5V

Vc

LCD_RS

LCD_RW

LCD_E

D0

J11

13

14

15

16

9

10

11

12

7

8

5

6

3

4

1

2

LCD 2x16

BC 817

GND

Figure 6 Connection of LCD display on the board.

Potentiometers

7

EVBnet01 has two potentiometers, POT0 and POT1. The potentiometers can be used to simulate the outputs of analog circuits. The voltage across POTx terminals can be adjusted in the 0....REF range.

1

3

J13

2

4

AREF

R20

10k

POT1

2 2

R21

10k

POT0

GND

Figure 7 Implementation of potentiometers.

Buzzer

The board has a built-in acoustic signaler, controlled by a logic low state through a transistor. The base of the transistor is connected to connector J13 as SPK.

1

3

J13

2

4

+5V

R6

10k

Q1

BC 857

LS1

GND

C17

CAP

GND

BUZZER

Figure 8 Implementation of the Buzzer.

RESET button

The EVBnet01 board has a led-out RESET signal which can be used as the output to reset external circuits and as the input to reset the module, e.g. through the RESET push-button. The EVBnet01 board is equipped with an on-board resetting button; by pressing it we force a low state on the RESET terminal of the module.

8

+5V

R7

4k7

SW6

RESET

#RESET

C16

100n

GND GND

Figure 9 Implementation of the RESET button.

RS-232 interface

The EVBnet01 board has one port for serial

RS232 transmission with a DB-9 connector. The lead-outs TxD, RxD, RTS, CTS are applied to the jumpers through a MAX232 level converter.

The DSR and DTR signals have been shorted.

Applying jumpers causes the connection of TxD and RxD to the USART0 port of the microcontroller and of CTS and RTS signals to line PE2 and PE3, respectively. Signals of the

RS232 port can be connected also to any leadouts of the microcontroller by means of cables.

Notice: if flow control has not been implemented, signals CTS and RTS should be connected to each other by means of a jumpers (as shown in the figure) in order to assure proper communication.

9

J4

DB9F

5

9

4

8

3

7

2

6

1

GND

GND

GND

+5V

U1

+

C6

100n

2

V+

6

V-

+

GND

C7

100n

14

7

13

8

T1 OUT

T2 OUT

R1 IN

R2 IN

MAX232

+5V

C1+

C1-

C2+

1

3

4

C2-

T1 IN

T2 IN

R1 OUT

R2 OUT

5

11

10

12

9

GND

+ C4

100n

+ C5

100n

RS232_TXD

RS232_RTS

RS232_RXD

RS232_CTS

+5V

D12

TX

R26

1k

+5V

D13

RX

R27

1k

Figure 10 Connection of the RS-232 port to the MMnet01/101.

USB interface

The EVBnet01 board has also USB port, realized with use of MMusb232 minimodule.

GND GND GND

M2

MMusb232

1

Q3A

IRF7104

7, 8

R25

1k

C2

100nF

JP10

+5V

JP3

JP4

JP2

JP5

PE1 (TXD0)

PE2

PE0 (RXD0)

PE3

USB_RXD

USB_TXD

USB_CTS

USB_RTS

JP6

JP1

JP8

JP9

PD2 (RXD1)

PD3 (TXD1)

PD5

PD4

Figure 11 Connection of the USB port to the MMnet01/101.

Additionally board is equipped with USB power switch (based on Q3), with allows, accordingly to USB specification, drawing up to 500mA from USB bus. For proper operation of this switch it is required that „Pull

Down IO Pins in USB Suspend” option in FT232BM settings is enabled.

The terminals TxD, RxD, RTS, CTS are connected to the jumpers. The DSR and DTR signals have been shorted

10

Applying jumpers causes the connection of TxD and RxD to the USART1 port of the microcontroller and of CTS and RTS signals to line PD5 and PD4, respectively. Signals of the

RS232 port can be connected also to any lead-outs of the microcontroller by means of cables.

Attention: if flow control has not been implemented, signals

CTS and RTS should be connected to each other by means of a jumpers (as shown in the figure) in order to assure proper communication.

1-Wire Interface

The EVBnet01 board has a 1-Wire bus connector. This connector can be used to connect e.g. a digital

DS1820 thermometer or Dallas/Maxim iButton reader from. The data signal has been applied to the J13 connector and designated as 1-W. It can be connected to any microcontroller lead-out by means of the attached cable.

+5V +5V

1

3

J13

2

4

R2

2k2

R1

100R

J2

1

2

3

1-WIRE

1

GND

1WIRE

Figure 12 Connection of the 1-Wire connector.

ISP and JTAG connectors

Programming of the module can be effected through the ISP or JTAG interfaces (the second one permits also debugging in the system).

The ISP standard programmer communicates with the microcontroller through a three-wire SPI interface (plus the RESET signal and power supply). The interface uses the I/O pins of the microcontroller (PE0, PE1 and

PB1) which, after programming, can perform usual functions. The LED signal controls the operation of multiplexer U3 which disconnects, for the duration of the programming session, the ISP bus lines from the peripheral circuits of the board, thus eliminating the possibility of an accidental writing operation into these circuits. During the writing operation this line should be in the low state. The JP7 short allows manual control of the multiplexer in case of using a programmer which is not serving this line.

11

JTAG is a four-lead interface permitting the takeover of control over the processor’s core and its internal peripherals. The possibilities offered by this interface are, among others: step operation, full-speed operation, equipment and program pitfalls, inspection and modification of contents of registers and data memories. Apart from this, functions are available offered by ISP programmers: programming and readout of Flash, EEPROM, fuse and lock bits.

TCK

TDO

TMS

TDI

ADC4

ADC6

ADC5

+5V

ADC7

GND

GND

GND

GND

+5V

J6

10

8

6

4

2

ISP

J8

5

7

1

3

9

JTAG

10

6

8

2

4

+5V

9

7

5

3

1

R3

1k

GND

+5V

#RESET

GND

#RESET

D1

ISP

PE1

PB1

PE0

GND

JP7

ISP Enable

12

13

U3

X0

X1

2

1

Y0

Y1

5

3

Z0

Z1

11

6

10

9

B

C

INH

A

4053

VDD

VSS

VEE

X

Y

Z

16

8

7

14

15

4

PE1_M

PB1_M

PE0_M

+5V

GND

GND

GND

MOSI

LED

RST

SCK

MISO

Figure 13 Connection of the MMnet01/101 module with the JTAG connector.

1 2

9 10

VCC

GND

GND

GND

GND

Figure 14 ISP connector.

Pin description

MOSI Commands and data from programmer to target

LED Multiplexer and LED diode driving signal

RST RESET signal

SCK Serial Clock, Controlled by programmer

MISO Data from target AVR to programmer

VCC Supply voltage to the programmer

GND Ground

TCK

TDO

TMS

VCC

TDI

1 2

9 10

GND

Vref

NSRST

NTRST

GND

Figure 15 JTAG connector.

Pin description

TCK

Test Clock, clock signal from emulator to target

TDO

Test Data Output, data signal from target to emul.

TMS

Test Mode Select, mode select signal from emulator to target

VCC

Supply voltage to the emulator

TDI

Test Data Input, data signal from emul. to target

Vref

Target voltage sense

RST

RESET signal

GND

Ground

Programmers which may be used with EVBnet01 and MMnet01/101 may be found on pages:

- ISPCable I: http://www.propox.com/products/t_77.html?lang=en

- ISPCable II: http://www.propox.com/products/t_78.html?lang=en

12

JTAG programmer/emulator may be found on page:

- JTAGCable I: http://www.propox.com/products/t_99.html?lang=en

3 Technical assistance

In order to obtain technical assistance please contact [email protected]

. In the request please include the following information:

• Number of the board version (e.g. REV 2)

• Setting of resistors

• A detailed description of the problem

4 Guarantee

The EVBnet01 board is covered by a six-month guarantee. All faults and defects not caused by the user will be removed at the Producer’s cost. Transportation costs are borne by the buyer.

The Producer takes no responsibility for any damage and defects caused in the course of using the EVBnet01 board.

13

5 Board layout and dimensions

6 Schematics

14

R4

7k5

+5V

R5

1k

CONTRAST

C15

100n

GND

+5V

5

7

1

3

9

J7

6

8

2

4

10

R24

1k

GND

+5V

GND

+5V

D5

D6

D7

A

K

D1

D2

D3

D4

GND

+5V

Vc

LCD_RS

LCD_RW

LCD_E

D0

J11

13

14

15

16

9

10

11

12

7

8

5

6

3

4

1

2

Q2

BC 817

LCD 2x16

GND

+5V

JP11

M1

PB0

PB1_M

PB2

PB3

PB4

PB5

PB6

PB7

PD0

PD1

PD2

PD3

PD4

PD5

PD6

PD7

LED_ACTIV

LED_LINK

GND

J1_1

J1_2

J1_3

J1_4

J1_5

J1_6

J1_7

J1_8

J1_9

J1_10

J1_11

J1_12

J1_13

J1_14

J1_15

J1_16

J1_17

J1_18

J1_19

J1_20

PB0/SS

PB1/SCK

PB2/MOSI

PB3/MISO

PB4/OC0/PWM0

PB5/OC1A/PWM1A

PB6/OC1B/PWM1B

PB7/OC2/PWM2

PD0/INT0/SCL

PD1/INT1/SDA

PD2/INT2/RxD1

PD3/INT3/TxD1

PD4/IC1

PD5

PD6/T1

PD7/T2

LED_ACTIV

LED_LINK

+5V

GND

PE7/INT7

PE6/INT6

PE5/INT5

PE4/INT4

PE3/AC-

PE2/AC+

PE1/PDO/TxD0

PE0/PDI/RxD0

AREF

PF0/ADC0

PF1/ADC1

PF2/ADC2

PF3/ADC3

PF4/ADC4

PF5/ADC5

PF6/ADC6

PF7/ADC7

TOSC1

TOSC2

#RESET

MMnet01/101

J2_1

J2_2

J2_3

J2_4

J2_5

J2_6

J2_7

J2_8

J2_9

J2_10

J2_11

J2_12

J2_13

J2_14

J2_15

J2_16

J2_17

J2_18

J2_19

J2_20

PE7

PE6

PE5

PE4

PE3

PE2

PE1_M

PE0_M

AREF

ADC0

ADC1

ADC2

ADC3

ADC4

ADC5

ADC6

ADC7

TOSC1

TOSC2

#RESET

5

7

1

3

J10

6

8

2

4

+5V

R19

10k

R18

10k

R17

10k

R16

10k

D6

D5

D4

D3

D10

D9

D8

D7

LED0

R15 1k

R14 1k

LED1

LED2

LED3

LED4

LED5

LED6

LED7

R13 1k

R12 1k

R11 1k

R10 1k

R9 1k

R8 1k

+5V

TCK

TDO

TMS

TDI

ADC4

ADC6

ADC5

+5V

ADC7

GND

GND

GND

GND

+5V

J6

10

8

6

4

2

ISP

J8

5

7

1

3

9

JTAG

6

8

2

4

10

+5V

9

7

5

3

1

R3

1k

GND

+5V

#RESET

GND

#RESET

D1

ISP

PE1

PB1

PE0

GND

JP7

ISP Enable

6

11

10

9

12

13

U3

X0

X1

2

1

Y0

Y1

5

3

Z0

Z1

INH

A

B

C

4053

VDD

VSS

VEE

X

Y

Z

16

8

7

14

15

4

GND

PE1_M

PB1_M

PE0_M

+5V

GND

GND

+5V

GND

C14

100n

PE7

PE5

PE3

PE1

AREF

ADC1

ADC3

ADC5

ADC7

TOSC2

PB0

PB2

PB4

PB6

PD0

PD2

PD4

PD6

LED_ACTIV

+5V

J9

5

7

1

3

9 10

11 12

13 14

15 16

6

8

2

4

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

35 36

37 38

39 40

Header 20X2

PE6

PE4

PE2

PE0

ADC0

ADC2

ADC4

ADC6

TOSC1

#RESET

PB1

PB3

PB5

PB7

PD1

PD3

PD5

PD7

LED_LINK

GND

15

AREF

R20

10k

ADJ1

2

GND

1

3

J12

2

4

SW0

SW1

SW2

SW3

GND

2

R21

10k

ADJ0

1

3

J13

2

4

+5V

R2

2k2

R1

+5V

100R

J2

1

2

3

1-WIRE

GND

+5V

R23

10k

R6

10k

GND

Q1

BC 857

GND

C17

100n

GND

LS1

BUZZER

+5V

R7

4k7

SW6

RESET

C16

100n

#RESET

GND GND http://www.propox.com

email: [email protected]

Title: EVBnet01

Size:

File:

Date: 31-03-2005

Sheet 1 of 2

Rev:

1.00

J4

DB9F

5

9

4

8

3

7

2

6

1

GND

GND

GND

+5V

+

+

U1

C6

100n

2

V+

6

V-

C7

100n

GND

14

7

13

8

T1 OUT

T2 OUT

R1 IN

R2 IN

MAX232

+5V

+5V

GND

C1+

C1-

C2+

C1

100n

1

3

4

C2-

T1 IN

T2 IN

R1 OUT

R2 OUT

5

11

10

12

9

GND

+

C4

100n

+ C5

100n

RS232_TXD

RS232_RTS

RS232_RXD

RS232_CTS

+5V

D12

TX

R26

1k

+5V

D13

RX

R27

1k

JP3

JP4

JP2

JP5

PE1 (TXD0)

PE2

PE0 (RXD0)

PE3

GND GND GND

M2

MMusb232

1

Q3A

IRF7104

7, 8

R25

1k

C2

100nF

JP10

+5V

USB_RXD

USB_TXD

USB_CTS

USB_RTS

JP6

JP1

JP8

JP9

PD2 (RXD1)

PD3 (TXD1)

PD5

PD4

J3

POWER

1

2

3

4

-

BR1

RB152

+

1

+

C8

470u/25V

SW1

D2

1N4148

Vin Vout

C13

100n

U4

GND

7805

C12

100n

+

C11

47u/16V

D11

PWR

+5V

R22

1k

GND

16

MH1 MH2 MH4 MH5 MH3 MH6

GND GND GND GND

TPIN-

TPIN+

TPOUT-

TPOUT+ not mounted

J5

3

4

1

2

Header 4

GND

GND

+5V

+5V

J1

1

2

J14

1

2 http://www.propox.com

email: [email protected]

Title: EVBnet01

Size:

File:

Date: 31-03-2005

Sheet 2 of 2

Rev:

1.00