Propox MMnet103 User manual

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Ethernet Minimodule
User’s
Manual
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Contents
1 INTRODUCTION ....................................................................................................................................... 3
A PPLICATIONS .............................................................................................................................................. 4
F EATURES .................................................................................................................................................... 4
2CONSTRUCTION OF THE MODULE ............................................................................................... 5
B LOCK DIAGRAM .......................................................................................................................................... 5
M ODULE PIN - OUT ......................................................................................................................................... 6
AT MEGA 128 MICROCONTROLLER ............................................................................................................. 13
E THERNET CONTROLLER LAN91C111..................................................................................................... 13
M EMORY CONTROLLER .............................................................................................................................. 14
RAM MEMORY ........................................................................................................................................... 19
D ATA F LASH MEMORY ................................................................................................................................. 19
R EAL - TIME CLOCK ...................................................................................................................................... 20
S UPPLY OF POWER .................................................................................................................................... 20
RESET CIRCUIT ........................................................................................................................................ 20
LED DIODES ............................................................................................................................................... 21
3CONNECTION OF THE MODULE WITH THE EXTERNAL WORLD....................................... 22
C ONNECTION TO THE E THERNET NETWORK ............................................................................................. 22
RS-232 INTERFACE ................................................................................................................................... 22
RS-485 INTERFACE ................................................................................................................................... 23
USB INTERFACE ........................................................................................................................................ 24
R ADIO LINK ................................................................................................................................................. 24
LCD DISPLAY ............................................................................................................................................. 25
E XTERNAL PERIPHERALS ON THE SYSTEM BUS ......................................................................................... 26
4PROGRAMMING THE MODULE..................................................................................................... 27
ISP CONNECTOR ........................................................................................................................................ 27
JTAG CONNECTOR .................................................................................................................................... 29
5AN APPLICATION EXAMPLE ......................................................................................................... 30
6EVALUATION BOARD...................................................................................................................... 31
7SPECIFICATIONS.............................................................................................................................. 31
8TECHNICAL ASSISTANCE ............................................................................................................. 32
9GUARANTEE ...................................................................................................................................... 32
10 ASSEMBLY DRAWINGS.............................................................................................................. 32
11 DIMENSIONS .................................................................................................................................. 34
12 SCHEMATICS ................................................................................................................................. 34

3
1 Introduction
Thank you very much for having bought our minimodule MMnet103. It was created with the idea
of facilitating the communication of microprocessor systems through the Internet/Ethernet
networks.
The heart of the module is the RISC Atmega128 microcontroller with 128kB of program memory
and 128kB of (external) RAM memory, co-operating with the Ethernet LAN91C111 controller
(100BaseTX). The memory controller built around a programmable CPLD device manages the
address space of the microcontroller, generates address strobe/selection signals used during
extension of the server by external I/O units, and serves the banking of RAM memory. The
minimodule has an 8 MB DataFlash serial memory for storage of WWW pages and of any files
e.g. with measurement data. The memory is connected to a fast SPI bus with 8 Mb/s transmission
speed. The MMnet103 has been equipped with a RTC clock built around the DS1307 device,
connected to the I2C bus. Together with the RTC circuit goes a socket for a lithium battery
providing many guaranteed years of uninterrupted clock operation.
MMnet103 operates under real-time control RTOS allowing to build applications with the use of
pseudo-concurrency in which different tasks are started and executed in the form of separate
threads. This permits an easy construction of applications which require parallel execution of
several tasks, for example servicing the TCP/IP stack and realizing the algorithm of control of an
industrial process. The RTOS system has an extended interface for handling peripheral
equipment, thanks to which the communication with them occurs via drivers registered in the
system. The system has drivers for the Ethernet controller, serial ports, the 1-Wire bus, the DS
1820 thermometer, LCD display RTC clock and DataFlash memory. The kernel of the RTOS
system and the TCP/IP stack together with implemented DHCP, UDP, ICMP, SMTP protocols and
HTTP with simple CGI-s were compiled to libraries.
The system incorporates a series of demonstration applications (WWW server, FTP, Telnet, TCP
client, TCP server, temperature monitoring and control, applications in the RTOS system) which
are basing on completed functions present in the IP stack and RTOS operating system libraries.
Attached libraries permit independent experiments (e.g. creation of web pages using the CGI
technique without penetrating the lower layers of the IP stack and the RTOS operating system).
The MMnet103 is delivered loaded with the WWW Server application and WWW demonstration
pages with examples of using CGI and Flash. The configuration of the server (MAC address, IP,
gateway, change of WWW page) can be effected remotely through serial RS232 or FTP ports.
Sources in C-language and ready libraries are attached to the server; they can be used to realize
one’s own projects. To modify and compile, the free C-compile GCC or C-compiler from
ImageCraft can be put into use.
We wish you nothing but success and a lot of satisfaction in designing and
developing new electronic equipment based on the MMnet103 minimodule.

4
Applications
The MMnet103 minimodule can be used as a design base for electronic circuits co-operating from the
Ethernet/Internet network, covering the following areas of interest:
•Industrial remote controlling and monitoring systems
•Telemetry
•Intelligent buildings
•Alarm systems
•Weather stations and environment monitoring
•Medical electronics
•Heating and air-conditioning systems
•Telecommunication
•Road traffic monitoring
•Remote data logging
•Home automation
The MMnet103 minimodule can be also used in didactic workshops of information and electronic schools,
illustrating the aspects of co-operation of electronic circuits from the Ethernet/Internet network, as well as be
used to construct thesis circuits.
Features
•Fast RISC microcontroller ATmega128 with up to 16 MIPS throughput
•Ethernet controller IEEE 802.3 10/100Mb/s LAN91C111
•Onboard RJ45 connector with integrated magnetics and LED diodes
•Onboard RS-232 interface with DB9F connector
•128kB of in circuit programmable FLASH program memory
•128KB of RAM memory
•4kB of EEPROM memory
•Serial DataFlash memory 32 or 64Mbit (4 or 8MBytes)
(1)
•Flexible memory controller, allowing suit address space to application requirements
•I2C Real Time Clock and battery socket
(1)
•Reliable reset circuit
•Crystal resonator 14.7456 or 16 MHz
•Crystal resonators 32.768 Hz for RTC and MCU internal timer/counter
•4 LED diodes indicating: power, LAN activity, DataFlash activity
•Fully SMD made on 4-layer PCB
•2 x 32 terminals with 0.1" (2.54mm) pitch fitting every prototype board
•Available free operating system with TCP/IP stack supporting many protocols
•Available evaluation board and sample applications
•Small dimensions: 56mm x 59mm
Remarks: 1. Assembled in dependence on the MMnet103 version

5
2 Construction of the module
Block diagram
The block diagram of the MMnet103 minimodule is shown in the drawing:
ATmega128
128kB RAM LAN91C111
DataFlash 1 DataFlash 2
RTC
memory
controller
16MHz 32kHz
32kHz
EEPROM
GND
PORTB
PORTD
BUS
PORTE
PORTF
Batt
RS-232
Figure 1 Block diagram of the MMnet103 minimodule.
The minimodule is sold in three basic versions, denoted with letters from A to C, or in accordance with
individual orders.
Module MMnet103- A contains:
•ATmega128 microcontroller
•Ethernet controller LAN91C111
•128kB RAM
Module MMnet103- B contains:
•ATmega128 microcontroller
•Ethernet controller LAN91C111
•128kB RAM
•One DataFlash 32Mb (4MB) memory
•Real Time Clock with socket for lithium battery
Module MMnet103- C contains:
•ATmega128 microcontroller
•Ethernet controller LAN91C111
•128kB RAM
•Two DataFlash memories with 64Mb (8MB) of total capacity
•Real Time Clock with socket for lithium battery

6
Individual orders coding:
MMnet103 – r – b – f – x – e
0 - without LAN91C111
1 - with LAN91C111
0 – without RTC
1 - RTC DS1307
0 - without DataFlash memory
1 - 32Mb DataFlash
2 - 2x32Mb DataFlash
0 – without battery socket
1 - with CR2023 battery socket
3.6864 - Crystal 3.6864 MHz
4 - Crystal 4 MHz
6 - Crystal 6 MHz
8 - Crystal 8 MHz
11.059 - Crystal 11.059 MHz
14.7456 - Crystal 14.7456 MHz
16 - Crystal 16 MHz
Module pin-out
Figure 2 Module pin-out – top view.

7
Function in MMnet103
Name J1 Name
Function in MMnet103
AD7
1 2 AD6
AD5
3 4 AD4
AD3
5 6 AD2
AD1
7 8 AD0
A1
9 10 A0
SEL2
11 12 SEL1
Interrupt from
LAN91C111 (optionally)
PE7/ INT7
13 14 PE6/ INT6
Interrupt from
LAN91C111
PE5/ INT5
15 16 PE4/ INT4
PE3/ AC-
17 18 PE2/ AC+
RS-232 – TxD
PE1/ PDO/TxD
19 20 PE0/ PDI/RxD
RS-232 – 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
Function in MMnet103
Name
J2
Name
Function in MMnet103
+5V
1 2 GND
+3.3V
3 4 GND
Vbat
5 6 GND
NC
7 8 NC
NC
9 10 NC
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 PD0/#INT0/SCL
RTC – SCL
PB7/ OC2/PWM2
25 26 PB6/OC1B/PWM1B
DataFlash2 - #CS
DataFlash1 – #CS
PB5/
OC1A/PWM1A
27 28 PB4/OC0/PWM0
DataFlash1/2 – MISO
PB3/ MISO
29 30 PB2/MOSI
DataFlash1/2 - MOSI
DataFlash1/2 – SCK
PB1/ SCK
31 32 PB0/#SS

8
J1
No. Function Alt. function Description
1 AD7
2 AD6
3 AD5
4 AD4
5 AD3
6 AD2
7 AD1
8 AD0
Data bus. Allows connecting externals peripherals mapped in
microcontroller address space. Peripheral addressing is done
with use of SEL1, SEL2 and/or A0, A1, #WR, #RD outputs.
9 A1
10 A0
Lowest two bits of address bus. Allows addressing 4 input and 4
output registers.
Note: outputs operate in 3.3V logic level standard.
11 SEL2
12 SEL1
Read/write strobe or address decoder outputs.
Note: outputs operate in 3.3V logic level standard.
13 PE7 INT7
PE7 – General purpose digital I/O
Alternative functions:
INT7 – External Interrupt source 7: The PE7 pin can serve as an
external interrupt source.
IC3 – Input Capture Pin3: The PE7 pin can act as an input
capture pin for Timer/Counter3.
14 PE6 INT6
PE6 – general purpose digital I/O
Alternative functions:
INT6 – External Interrupt source 6: The PE6 pin can serve as an
external interrupt source.
T3 – Timer/Counter3 counter source.
15 PE5 INT5
PE5 – general purpose digital I/O
Alternative functions:
INT5 – External Interrupt source 5: The PE5 pin can serve as an
External Interrupt source.
OC3C – Output Compare Match C output: The PE5 pin can serve
as an External output for the Timer/Counter3 Output Compare C.
The pin has to be configured as an output (DDE5 set “one”) to
serve this function. The OC3C pin is also the output pin for the
PWM mode timer function.
16 PE4 INT4
PE4 – general purpose digital I/O
Alternative functions:
INT4 – External Interrupt source 4: The PE4 pin can serve as an
External Interrupt source.
OC3B – Output Compare Match B output: The PE4 pin can serve
as an External output for the Timer/Counter3 Output Compare B.
The pin has to be configured as an output (DDE4 set (one)) to
serve this function. The OC3B pin is also the output pin for the
PWM mode timer function.
17 PE3 AC-
PE3 – general purpose digital I/O
Alternative functions:
AC- – Analog Comparator Negative input. This pin is directly
connected to the negative input of the Analog Comparator.
OC3A, Output Compare Match A output: The PE3 pin can serve
as an External output for the Timer/Counter3 Output Compare A.
The pin has to be configured as an output (DDE3 set “one”) to
serve this function. The OC3A pin is also the output pin for the
PWM mode timer function.
18 PE2 AC+
PE2 – general purpose digital I/O
Alternative functions:
AC+ – Analog Comparator Positive input. This pin is directly
connected to the positive input of the Analog Comparator.
XCK0, USART0 External clock. The Data Direction Register
(DDE2) controls whether the clock is output (DDE2 set) or input
(DDE2 cleared). The XCK0 pin is active only when the USART0
operates in Synchronous mode.

9
19 PE1 PDO/TxD
PE1 – general purpose digital I/O
Alternative functions:
PDO – SPI Serial Programming Data Output. During Serial
Program Downloading, this pin is used as data output line for the
ATmega128.
TXD0 – UART0 Transmit pin.
20 PE0 PDI/RxD
PE0 – general purpose digital I/O
Alternative functions:
PDI – SPI Serial Programming Data Input. During Serial Program
Downloading, this pin is used as data input line for the
ATmega128.
RXD0 – USART0 Receive Pin. Receive Data (Data input pin for
the USART0). When the USART0 receiver is enabled this pin is
configured as an input regardless of the value of DDRE0. When
the USART0 forces this pin to be an input, a logical one in
PORTE0 will turn on the internal pull-up.
21 PF7 ADC7
PF7 – general purpose digital I/O
Alternative functions:
ADC7 – Analog to Digital Converter, Channel 7.
TDI – JTAG Test Data In: Serial input data to be shifted in to the
Instruction Register or Data Register (scan chains). When the
JTAG interface is enabled, this pin can not be used as an I/O pin.
22 PF6 ADC6
PF6 – general purpose digital I/O
Alternative functions:
ADC6 – Analog to Digital Converter, Channel 6.
TDO – JTAG Test Data Out: Serial output data from Instruction
Register or Data Register. When the JTAG interface is enabled,
this pin can not be used as an I/O pin. The TDO pin is tri-stated
unless TAP states that shift out data are entered.
23 PF5 ADC5
PF5 – general purpose digital I/O
Alternative functions:
ADC5 – Analog to Digital Converter, Channel 5.
TMS – JTAG Test Mode Select: This pin is used for navigating
through the TAP-controller state machine. When the JTAG
interface is enabled, this pin can not be used as an I/O pin.
24 PF4 ADC4
PF4 – general purpose digital I/O
Alternative functions:
ADC4 – Analog to Digital Converter, Channel 4.
TCK – JTAG Test Clock: JTAG operation is synchronous to TCK.
When the JTAG interface is enabled, this pin can not be used as
an I/O pin.
25 PF3 ADC3
PF3 – general purpose digital I/O
Alternative functions:
ADC3 – Analog to Digital Converter, Channel 3.
26 PF2 ADC2
PF2 – general purpose digital I/O
Alternative functions:
ADC2 – Analog to Digital Converter, Channel 2.
27 PF1 ADC1
PF1 – general purpose digital I/O
Alternative functions:
ADC1 – Analog to Digital Converter, Channel 1.
28 PF0 ADC0
PF0 – general purpose digital I/O
Alternative functions:
ADC0 – Analog to Digital Converter, Channel 0.
29 AREF Analog reference voltage for the A/D converter
30 AGND Analog ground (internally connected with digital ground GND)
31 A+5V
+5V power supply for analog circuits. Connected internally with
+5V through LP filter. External analog circuits can use this
voltage.
32 AGND Analog ground (internally connected with digital ground GND)
J2

10
No. Function Alt. function Description
1 +5V Power supply input +5V
2 GND Ground
3 +3.3V Output of +3.3V voltage from internal regulator. Can be used to
power external peripherals, which requires +3.3V.
4 GND Ground
5 Vbat
Battery voltage sustaining the operation of the RTC clock. If a
battery is mounted on the module, this lead-out can be used as a
source of power for peripherals external to the module. If there is
no battery on the module, the TC clock can be supplied from an
external battery or another emergency power source.
6 GND Ground
7 NC
8 NC Not connected.
9 NC
10 NC Not connected.
11 LEDLINK
The output of the LEDLINK diode driving signal (indicating
connection to the Ethernet network). It can be used to connect an
additional diode, e.g. led out externally to the device case.
12 LEDACT
The output of the LEDACT diode driving signal (indicating activity
of the module in Ethernet network). It can be used to connect an
additional diode, e.g. led out externally to the device case.
13 #RESET Input/output of RESET signal
14 LEDDF
The output of the LEDDF diode driving signal (indicating activity
of the DataFlash memory). It can be used to connect an
additional diode, e.g. led out externally to the device case.
15 #WR Write strobe.
16 #RD Read strobe.
17 PD7 T2
PD7 – general purpose digital I/O
Alternative functions:
T2 – Timer/Counter2 counter source.
18 PD6 T1
PD6 – general purpose digital I/O
Alternative functions:
T1 – Timer/Counter1 counter source.
19 PD5 PD5 – general purpose digital I/O
20 PD4 IC1
PD4 – general purpose digital I/O
Alternative functions:
XCK1 – USART1 External clock. The Data Direction Register
(DDD4) controls whether the clock is output (DDD4 set) or input
(DDD4 cleared). The XCK1 pin is active only when the USART1
operates in Synchronous mode.
IC1 – Input Capture Pin1: The PD4 pin can act as an input
capture pin for Timer/Counter1.
21 PD3 #INT3/TxD1
PD3 – general purpose digital I/O
Alternative functions:
INT3 – External Interrupt source 3: The PD3 pin can serve as an
external interrupt source to the MCU.
TXD1 – Transmit Data (Data output pin for the USART1). When
the USART1 Transmitter is enabled, this pin is configured as an
output regardless of the value of DDD3.
22 PD2 #INT2/RxD1
PD2 – general purpose digital I/O
Alternative functions:
INT2 – External Interrupt source 2. The PD2 pin can serve as an
External Interrupt source to the MCU.
RXD1 – Receive Data (Data input pin for the USART1). When the
USART1 receiver is enabled this pin is configured as an input
regardless of the value of DDD2. When the USART forces this
pin to be an input, the pull-up can still be controlled by the
PORTD2 bit.