EVBnet01_en.pdf

E V B

E V B n e t0 1

n e t0 1

Evaluation Board for

MMnet01/101

User

Manual

REV 0.8

Many ideas one solution

Contents

1 INTRODUCTION ....................................................................................................................................... 3

F EATURES .................................................................................................................................................... 3

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

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

GUARANTEE ...................................................................................................................................... 13

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

SCHEMATICS ..................................................................................................................................... 14

1 Introduction

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 (v-

cut) 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.

Features

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

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

Arrangement on lead-outs

Name

Function in MMnet01/101

PE7

PE6

PE5

PE4

Interrupt from RTL8019AS

PE3

PE2

PE1

PE0

AREF

ADC0

ADC1

ADC2

ADC3

ADC4

ADC5

ADC6

ADC7

TOSC1

TOSC2

#RESET

PB0

PB1

DataFlash – SCK

PB2

PB3

DataFlash - MOSI

DataFlash – MISO

PB4

PB5

DataFlash – #CS

PB6

PB7

Bank select (optional)

PD0

PD1

PD2

PD3

PD4

PD5

PD6

PD7

LACT

LLNK

+5V

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.

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