ASIX SPINET User manual

SPINET
Ethernet to SPI interface module
User's Guide
•10BASE-T physical layer, full duplex or half duplex
•Including RJ4 connector with galvanic
insulation and two LED indicators
•Media access controller (MAC)
•8 KB of buffers for reception and transmission
•Hardware assisted checksum calculation
•Power by 3.3 V or V
•Outputs with both 3.3 V and V levels
• V tolerant inputs
•Easy connection to PVK40 board
•Example program in C
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TABLE OF CONTENTS
1. SPINET..............................................................................................3
2. INPUTS AND OUTPUTS......................................................................3
2.1 Connection to 3.3 V application...................................................... 4
2.2 Connection to 5 V application......................................................... 4
3. SOFTWARE........................................................................................5
4. ELECTRICAL SCHEMATICS.................................................................6
5. MECHANICAL DESIGN....................................................................... 7
6. TECHNICAL SPECIFICATIONS............................................................8
6.1 Recommended values for 3.3 V application...................................... 8
6.2 Recommended values for 5 V application......................................... 8
Note: T is document contains yperlinks pointing to web pages on t e
Internet. If t e links appen to be broken (pointing to a non-existing page),
please download recent version of t is manual from www.asix-tools.com.
Page 2

1. SPINET
SPINET is a module based on ENC28J60 Ethernet controller by Microchip
providing easy connection of application circuitry to an Ethernet network
without necessity of previous knowledge of physical layer of this interface.
SPINET contains 10BASE-T physical layer (PHY) including RJ4 connector with
galvanic insulation and media access control logic (MAC). The module supports
half duplex and full duplex operation at 10 Mb/s and it is equipped by 8 kB of
dual port SRAM for incoming and outgoing data. Besides of other features it
includes hardware engine for copying blocks of memory and checksum
calculation in one's complement arithmetics (IP checksum) and CRC.
2. INPUTS AND OUTPUTS
Pin Label Type Description 3.3 V V
1 -INT OUT Interrupt pin 
2 CLKO OUT User clock output 
3 SO OUT Serial data out 
4 -WOL OUT Wake On LAN *) 
-INT OUT Interrupt pin 
6 CLKO OUT User clock output 
7 SO OUT Serial data out 
8 -WOL OUT Wake On LAN *) 
9 SCK IN Serial clock input  
10 SI IN Serial data input  
11 -RST IN Reset  
12 -CS IN Chip select  
13 +3V3 PWR Power supply of +3.3 V 
14 GND PWR Common ground  
1 + V PWR Power supply of + V 
16 GND PWR Common ground  
*) According to recent datasheet of ENC28J60, this pin shall be left unconnected.
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The module is powered by si gle power supply, use either +3.3 V or + V
on appropriate pin 13 or 1 .
All module inputs are LVTTL and are V tolerant.
Outputs pins with names prefixed by dash character ("-") are active in log. 0,
all other signals are active in log. 1.
All outputs are doubled. Outputs on pins to 8 are with 3.3 V levels and
connect directly ENC28J60. If V power supply is used, signals with V levels
are available on pins 1 to 4. Connect outputs with corresponding voltage level
according to applications need, see the table above.
2.1 Co ectio to 3.3 V applicatio
If the modules is to be used in 3.3 V application input and output signals of
ENC28J60 are used directly.
-INT5
SO5
-INT
SO
SCK
-RST
+3V3
+5V
CLKO5
-WOL5
CLKO
-WOL
SI
-CS
GND
GND
uPC
MSEL
MOSI
-INT1
-INT0
MISO
MCLK
VDD GND
GND
+3V3
100 F
SPINET
3,3V applicatio
2.2 Co ectio to 5 V applicatio
In case the module is to be used in V application, the output signals are
connected through integrated level converter while input signals are are
connected directly ENC28J60 (which is V tolerant). A 3.3 V voltage regulator
for powering the ENC28J60 is part of the module.
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-INT5
SO5
-INT
SO
SCK
-RST
+3V3
+5V
CLKO5
-WOL5
CLKO
-WOL
SI
-CS
GND
GND
uPC
MSEL
MOSI
-INT1
-INT0
MISO
MCLK
VDD GND
GND
+5V
100 F
SPINET
5V applicatio
3. SOFTWARE
An example program in C is available at www.asix-tools.com royalty free. The
module may be purchased as a set for easy connection to PVK40 development
board.
Description of communication with ENC28J60 is available in the datasheet and
application notes of its manufacturer.
A suitable MAC address shall be assigned to the module during startup
configuration of ENC28J60. If yo are not assigned Organization unique
identifier (OUI) by IEEE, it is recommended to use an address from locally
administered range, that is, an address with bit 1 (second least significant) in
its first byte set, e.g. 02-00-00-00-00-78.
Note: T e module provides wit solution of communication over Et ernet
network up to t e MAC layer, t at is, it transfers Et ernet frames. Hig er level
protocols (ARP, IP, ICMP, UDP, TCP, HTTP...) are to be implemented in t e
application (typically in t e firmware of connected microcontroller).
Page

4. ELECTRICAL SCHEMATICS
Page 6

5. MECHANICAL DESIGN
SPINET - all dimensions in millimeters
Page 7
Ø*3
8
48
57
5
11
35
40

6. TECHNICAL SPECIFICATIONS
6.1 Recomme ded values for 3.3 V applicatio
Power supply, 3.3 V VCC3 min. 3.1 V max. 3.6 V
Power consumption, +3V3 ICC3 max. 180 mA
Input voltage log.1 VIH min. 2.2 V max. . V
Input voltage log.0 VIL max. 1 V
Output voltage log.1, 3.3 V VOH3 min. VCC3-0.7
Output voltage log.0, 3.3 V VOL3 max. 0.4 V
Output pin current, 3.3 V Iout3 max. 4 mA
6.2 Recomme ded values for 5 V applicatio
Power supply, V VCC min. 4, V max. , V
Power consumption, + V ICC max. 200 mA
Input voltage log.1 VIH min. 2,2 V max. . V
Input voltage log.0 VIL max. 1 V
Output voltage log.1, V VOH min. 4,4 V
Output voltage log.0, V VOL max. 0,1 V
Output pin current, V Iout max. 2 mA
Values for use in other than typical environment are available in datasheets for
ENC28J60, 74AHCT 41 and LF33.
Page 8
SPINET_EN
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information is provided in the hope that it will be useful, but without any warranty. We
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