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MMnet02

User’s Manual

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Contents

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

FEATURES .................................................................................................................................................... 3

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

PLACEMENT OF ELEMENTS ON THE BOARD ................................................................................................. 4 ARRANGEMENT ON LEAD-OUTS ................................................................................................................... 5 BOARD SUPPLY ............................................................................................................................................ 6 LED DIODES................................................................................................................................................. 6 PUSH-BUTTONS............................................................................................................................................ 7 LCD DISPLAY ............................................................................................................................................... 7 POTENTIOMETERS........................................................................................................................................ 8 BUZZER ........................................................................................................................................................ 8 RESET BUTTON .......................................................................................................................................... 9 RS-232 INTERFACE ..................................................................................................................................... 9 1-WIRE INTERFACE.................................................................................................................................... 10 CONNECTION TO THE ETHERNET NETWORK ............................................................................................. 11 ISP AND JTAG CONNECTORS ................................................................................................................... 12

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

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

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

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

3

1 Introduction

The EVBnet02 board was created with the aim of providing a hardware base for a designer of systems relying on the MMnet02 minimodule, 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 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 EVBnet02 along with the MMnet02 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.

We wish you nothing but success and a lot of satisfaction in designing and developing new electronic equipment based on the EVBnet02 board and the

Mmnet02 minimodule.

Features

• Socket for the MMnet02 module • Connector with all terminals of the MMnet02 module • Connectors of all peripherals accessible on board • Power supply (supplying power is taken from a standard socket or supplied through the Ethernet

cable) • Power switch • RJ45 Ethernet socket with transformer • 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 • 2x16 LCD display (1) • 8 LED diodes • 4 push-buttons • 2 potentiometers • Buzzer • Prototype design area

Notice: 1. Mounted optionally

4

2 The Board

Placement of elements on the board

Figure 1 Placement of elements on the EVBnet02 board.

1. Prototype area 2. Connector with led-out MMnet02 module terminals 3. 1-Wire connector 4. RJ45 Ethernet connector 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. Peripheral connectors 16. Buzzer 17. MMnet02 module

5

Arrangement on lead-outs Numbering of terminals is in accord with the numeration in the MMnet02 minimodule. The terminals of Ethernet controller TPIN, TUPOT have not been led out to a connector.

Function in MMnet02 Name

Name Function in MMnet02

+5V 1 2 GND

+3.3V 3 4 GND

Vbat 5 6 GND

LEDLINK 11 12 LEDACT

#RESET 13 14 LEDDF

#WR 15 16 #RD

PD7/T2 17 18 PD6/ T1

PD5 19 20 PD4/ IC1

PD3/#INT3/TxD1 21 22 PD2/#INT2/RxD1

RTC – SDA PD1/#INT1/SDA 23 24 #INT0/SCL RTC – SCL

PB7/ OC2/PWM2 25 26 OC1B/PWM1B DataFlash2 - #CS

DataFlash1 – #CS PB5/ OC1A/PWM1A 27 28 OC0/PWM0

DataFlash1/2 – MISO PB3/ MISO 29 30 MOSI DataFlash1/2 - MOSI

DataFlash1/2 – SCK PB1/ SCK 31 32 PB0/#SS AD7 1 2 AD6

AD5 3 4 AD4

AD3 5 6 AD2

AD1 7 8 AD0

A1 9 10 A0

SEL2 11 12 SEL1

RTL8019AS interrupt PE7/ INT7 13 14 PE6/ INT6

RTL8019AS int. (opt.) PE5/ INT5 15 16 PE4/ INT4

PE3/ AC- 17 18 PE2/ AC+

PE1/ PDO/TPD 19 20 PE0/ PDI/RxD

PF7/ ADC7/TDI 21 22 PF6/ ADC6/TDO

PF5/ ADC5/TMS 23 24 PF4/ ADC4/TCK

PF3/ADC3 25 26 PF2/ ADC2

PF1/ ADC1 27 28 PF0/ ADC0

AREF 29 30 AGND

A+5V 31 32 AGND

6

Board supply

The EVBnet02 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.

• Through the J5 Ethernet connector. The terminals of the connector to which the supplying power is applied should conform to the Power over Ethernet 802.3af standard (however, the applied voltage should not be higher than 12V AC !). In order to apply power through the RJ45 connector, the board should be provided with JP1 jumpers.

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

Both supply methods should not be used simultaneously.

+

470u/25VC8

GND

1N4148

D2

100nC13

100nC12

- +

2

1

3

4

RB152BR1

123

ZASILANIE

J3 Vin VoutGND

7805U4

+5V

+

47u/16VC11

SW1

12

34

JP1

LAN_GND

12345678

RJ-45J5

Figure 2 Implementation of the power supply on the EVBnet02 board.

LED diodes

The EVBnet02 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.

7

LED1D9

LED0D10

LED2D8

LED3D7

LED4D6

LED5D5

LED6D4

LED7D3

1kR15

1kR13

1kR14

1kR12

1kR11

1kR10

1kR9

1kR8

+5V

1 23 45 67 8

LEDn

J10

Figure 3 Implementation of LED diodes.

Push-buttons

The EVBnet02 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.

10kR19

10kR18

10kR17

10kR16

+5V

SW0

SW1

SW2

SW3

GND

1 23 4

SWn

J12

Figure 4 Implementation of push-buttons.

LCD display

The LCD display is connected to the data bus of the microcontroller. The connection method permits only the write operation to the display, which is, however, sufficient for its operation. The SEL1 output should be configured as a write strobe. The display is seen in the address space from 0xFF04 to 0xFF05, the choice between the instruction register and the data register of the display is executed by means of the A0 address line: 0xFF04 – instruction register 0xFF05 – data register The contrast voltage of the LCD is set by the voltage divider R4 and R5.

8

1234567891011121314

LCD 16x2

J11

100nC15

GND

+5V

A0

+5VGND

AD1

AD5

AD7

AD3

AD6

AD0

AD2

AD4

#SEL1GND

7k5R4

620R5

Figure 5 Connection of the LCD display to the microcontroller bus.

Potentiometers

EVBnet02 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.

13

2

10kPOT1

R20

GND

13

2

10kPOT0

R21

AREF

1 23 4

J13

Figure 6 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.

9

BUZZER

LS1BC 857Q1

CAPC17

GNDGND

+5V

1 23 4

J13

10k

R6

Figure 7 Implementation of the Buzzer

RESET button

The MMnet02 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 EVBnet02 board is equipped with an on-board resetting button; by pressing it we force a low state on the RESET terminal of the module.

#RESET

RESETSW6

GND

+5V

100nC16

GND

4k7R7

Figure 8 Implementation of the RESET push-button.

RS-232 interface

The EVBnet02 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 lead-outs of the microcontroller by means of cables.

10

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.

+ 100nC6

+ 100nC7

+100nC4

+100nC5

V+2C1+ 1

C1- 3

C2+ 4

C2- 5

V-6

T1 IN 11

T2 IN 10

R1 OUT 12

R2 OUT 9

T1 OUT14

T2 OUT7

R1 IN13

R2 IN8

VC

C16

GN

D15

MAX232

U1

162738495

DB9F

J4

GNDGND

GND

GND GND

+5V

+5V

RS232_TXDRS232_CTSRS232_RXDRS232_RTS

PE1

PE0 (RXD0)

(TXD0)

PE3

PE2JP4

JP2

JP5

JP3

Figure 9 Connection of the RS-232 port to the MMnet02 board.

1-Wire Interface

The EVBnet02 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.

VTG

DA

TA

GN

D

1

1WIRE

+5V

GND

123

1-WIRE

J2

+5V

1 23 4

J13

2k2R2

100R

R1

Figure 10 Connection of the 1-Wire connector.

11

Connection to the Ethernet network

The EVBnet02 board has an Ethernet RJ-45 socket. The lead-outs of the RJ-45 are connected with the Ethernet RTL8019AS controller through a 10Base-T transformer. The maximum cable length between the EVBnet02 board and the hub/switch is 100 meters.

1

2

3

4

5

6

7

8

16

15

14

11

10

9

13

12

XM

ITR

CV

20F001N

U2

10nC10

10nC9

10n/2kVC2

10n/2kVC3

LAN_GNDLAN_GND

AC2

AC1

12

34

JP1

GND GND

TPIN+

TPOUT+

TPIN-

TPOUT-

LAN_GND

JP6

12345678

RJ-45J5

Figure 11 Connection to he Ethernet through a transformer.

TX

+T

X-

RX

+N

/CN

/CR

X-

N/C

N/C

Figure 12 RJ-45 connector pin description.

12

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.

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.

12345678910

ISP

J6

#RESET

GNDGNDGNDGND+5V

X012

X113

Y02

Y11

Z05

Z13

INH6

A11

B10

C9

X 14

Y 15

Z 4

VDD 16

VSS 8

VEE 7

4053

U3

PE0_M

PE1_M

PB1_MPE1

PB1

PE0

GND

GND

+5VADC7

ADC6ADC5

ADC4

TDI

TDOTMS

TCK

+5VGNDGND

ISP

D1+5V

1 23 45 67 89 10

JTAG

J8

GND

+5V#RESET

1k

R3

JP7

GND

ISP Enable

Figure 13 Connection of the MMnet02 module with the JTAG connector.

13

1 2

9 10

VCCGNDGNDGNDGND

MOSILEDRSTSCKMISO

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

1 2

9 10

GNDVrefNSRSTNTRSTGND

TCKTDOTMSVCCTDI

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 EVBnet02 and MMnet02 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

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 support@propox.com . 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 MMnet02 minimodule 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 MMnet02 module.

14

5 Board layout and dimensions

6 Schematics

15

Sheet 1 of 4 1.00

http://www.propox.comemail: support@propox.com

Size: File: Rev:

Date: 28-06-2004

Title: MMnetEVB

AD7J1_1

AD6J1_2

AD5J1_3

AD4J1_4

AD3J1_5

AD2J1_6

AD1J1_7

AD0J1_8

A1J1_9

A0J1_10

#SEL2J1_11

#SEL1J1_12

PE7/INT7J1_13

PE6/INT6J1_14

PE5/INT5J1_15

PE4/INT4J1_16

PE3/AC-J1_17

PE2/AC+J1_18

PE1/PDO/TxD0J1_19

PE0/PDI/RxD0J1_20

PF7/ADC7J1_21

PF6/ADC6J1_22

PF5/ADC5J1_23

PF4/ADC4J1_24

PF3/ADC3J1_25

PF2/ADC2J1_26

PF1/ADC1J1_27

PF0/ADC0J1_28

AREFJ1_29

AGNDJ1_30

A+5VJ1_31

AGNDJ1_32

+5V J2_1

GND J2_2

+3.3V J2_3

GND J2_4

Vbat J2_5

GND J2_6

TPIN+ J2_7

TPIN- J2_8

TPOUT+ J2_9

TPOUT- J2_10

LED_LINK J2_11

LED_ACTIV J2_12

#RESET J2_13

LED_DF J2_14

#WR J2_15

#RD J2_16

PD7/T2 J2_17

PD6/T1 J2_18

PD5 J2_19

PD4/IC1 J2_20

PD3/INT3/TxD1 J2_21

PD2/INT2/RxD1 J2_22

PD1/INT1/SDA J2_23

PD0/INT0/SCL J2_24

PB7/OC2/PWM2 J2_25

PB6/OC1B/PWM1B J2_26

PB5/OC1A/PWM1A J2_27

PB4/OC0/PWM0 J2_28

PB3/MISO J2_29

PB2/MOSI J2_30

PB1/SCK J2_31

PB0/SS J2_32

MMnet02 module

M1

12345678910

ISP

J6

#RESET

GNDGNDGNDGND+5V

X012

X113

Y02

Y11

Z05

Z13

INH6

A11

B10

C9

X 14

Y 15

Z 4

VDD 16

VSS 8

VEE 7

4053

U3

PE0_M

PE1_M

PB1_MPE1

PB1

PE0

GND

GND

+5VADC7

ADC6ADC5

ADC4

TDI

TDOTMS

TCK

+5VGNDGND

#RESET

RESETSW6

GND

+5V

BUZZER

LS1BC 857Q1

CAPC17

GNDGND

+5V

LED1D9

LED0D10

LED2D8

LED3D7

LED4D6

LED5D5

LED6D4

LED7D3

1234567891011121314

LCD 16x2

J11

100nC15

GND

+5V

A0

+5V

+5V

GND

123

1-WIRE

J2

+5V

13

2

10kPOT1

R20

GND

13

2

10kPOT0

R21

AREF

ISP

D1

GND

PE3PE5

PE6PE7

PE2PE4

ADC0ADC2

ADC6ADC4ADC5

ADC1

ADC7

ADC3

PD0PD1PD2

PB3

PD7

PB0

PD6

PB2

PD5PD3

PB4PB6

PD4

PB5PB7

#RESET

AREFAGNDAGND

A+5V

+5V

AD6

AD0AD2AD4

AD1

AD5AD7

AD3

+3.3VGND

GND

#SEL1#SEL2

1 23 45 67 89 1011 1213 1415 1617 1819 2021 2223 2425 2627 2829 3031 32

Header 16X2

J9

GND

A0A1

VbatLED_ACTIVLED_LINK

#RD#WRLED_DF

PE3

PE5

PE7

ADC5

ADC1

ADC7

ADC3

AREF

A+5V

AD1

AD5

AD7

AD3

#SEL2

A1

PE6

PE2

PE4

ADC0

ADC2

ADC6

ADC4

AGND

AGND

AD6

AD0

AD2

AD4

#SEL1

A0

PD1

PB3

PD7

PD5

PD3

PB5

PB7

#RESET

+5V

+3.3V

TPIN+

TPOUT+

Vbat

#WR

PD0

PD2

PB0

PD6

PB2

PB4

PB6

PD4

GND

GND

TPIN-

TPOUT-

GND

LED_ACTIV

#RD

LED_DF

LED_LINK

+5V

1kR15

1kR13

1kR14

1kR12

1kR11

1kR10

1kR9

1kR8

+5V

10kR19

10kR18

10kR17

10kR16

+5V

SW0

SW1

SW2

SW3

GND

AD1

AD5

AD7

AD3

AD6

AD0

AD2

AD4

#SEL1

1 23 45 67 89 10

JTAG

J8

GND

+5V#RESET

100nC16

GND

1 23 4

J12

1 23 45 67 8

J10

100nC14

GND

+5V

PE0_MPE1_M

PB1_M

PE1

PB1

PE0

1 23 4

J13

1 23 45 67 89 1011 1213 1415 1617 1819 2021 2223 2425 2627 28

Header 14X2

J7

GND

2k2R2

100R

R1

4k7R7

10k

R6

1k

R3

7k5R4

620R5

JP7

GND

ISP Enable

16

+ 100nC6

+ 100nC7

+100nC4

+100nC5

V+2C1+ 1

C1- 3

C2+ 4

C2- 5

V-6

T1 IN 11

T2 IN 10

R1 OUT 12

R2 OUT 9

T1 OUT14

T2 OUT7

R1 IN13

R2 IN8

VC

C16

GN

D15

MAX232

U1

162738495

DB9F

J4

GNDGND

GND

GND GND

+5V

+5V

RS

-232

Sheet 2 of 4 1.00

http://www.propox.comemail: support@propox.com

Size: File: Rev:

Date: 28-06-2004

Title: MMnetEVB

1

2

3

4

5

6

7

8

16

15

14

11

10

9

13

12

XM

ITR

CV

20F001N

U2

10nC10

10nC9

10n/2kVC2

10n/2kVC3

LAN_GNDLAN_GND

AC2

AC1

12

34

JP1

GND GND

TPIN+

TPOUT+

TPIN-

TPOUT-

RS232_TXDRS232_CTSRS232_RXDRS232_RTS

PE1

PE0 (RXD0)

(TXD0)

PE3

PE2

LAN

LAN_GND

JP4

JP2

JP5

JP3

+

470u/25VC8

GND

1N4148

D2

100nC13

100nC12

- +

2

1

3

4

RB152BR1

123

ZASILANIE

J3

Vin VoutGND

7805U4

AC2

AC1

+5V

+

47u/16VC11

+12V

100nC1

GND

+5V

JP6

12345678

RJ-45J5

GNDGND

+5V+5V

MH1 MH2 MH4 MH5 MH3 MH6

GND GND GND GND

SW1 12

J14

12

J1

PO

WE

R