Digi Connect SP® and
Digi Connect® Wi‐SP
Hardware Reference
90000540_F
Release date: April 2011
© 2011 Digi International Inc.
All Rights Reserved.
Digi, Digi International, the Digi logo, a Digi International Company, Digi Connect SP, Digi Connect Wi-SP,
Net +, NET + OS, Net+Works are trademarks or registered trademarks of Digi International, Inc. in the United
States and other countries worldwide. All other trademarks are the property of their respective owners.
All other trademarks mentioned in this document are the property of their respective owners.
Information in this document is subject to change without notice and does not represent a commitment on the
part of Digi International.
Digi provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may make
improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this
manual at any time.
This product could include technical inaccuracies or typographical errors. Changes are periodically made to
the information herein; these changes may be incorporated in new editions of the publication.
About This Guide
Purpose
The purpose of this guide is to assist developers creating custom embedded software for the
Digi Connect SP and Digi Connect Wi-SP platform using the NET+OS operating system and
tools.
Related Documentation
See the NS7520 Hardware Reference for information on the NS7520 chip.
See the NET+Works BSP Porting Guide for additional programming information.
Support Information
To get help with a question or technical problem or make comments and recommendations
about Digi products and documentation, use the following contact information.
General
Customer Service and Support
Digi International
United States: 1 877-912-3444
11001 Bren Road East
Other Locations: 1 952-912-3444
Minnetonka, MN 55343
www.digiembedded.com/support
www.digiembedded.com
U.S.A.
Contents
Purpose ............................................................................................................................. 3
Related Documentation .................................................................................................... 3
Support Information ......................................................................................................... 3
Chapter 1:
Introducing the Digi Connect SP & Digi Connect Wi-SP Hardware ........... 6
Hardware Overview ......................................................................................................... 6
LEDs................................................................................................................................. 7
Reset Button ..................................................................................................................... 8
Antenna ............................................................................................................................ 8
MEI 232/422/485 Switch Settings ................................................................................... 9
DB-9 Connector ............................................................................................................. 10
JTAG Interface ............................................................................................................... 11
Power Jack...................................................................................................................... 12
Chapter 2:
Programming Considerations......................................................................... 13
GPIO............................................................................................................................... 13
General Information ............................................................................................. 13
GPIO Registers..................................................................................................... 13
GPIO Pin Use ................................................................................................................. 14
LEDs............................................................................................................................... 15
General information ............................................................................................. 15
About LEDs.......................................................................................................... 15
Flash ............................................................................................................................... 15
General Information ............................................................................................. 15
Memory .......................................................................................................................... 16
Reset Button ................................................................................................................... 16
Appendix A: Specifications ................................................................................................... 17
Network Interfaces ......................................................................................................... 17
Serial Interface ............................................................................................................... 18
Data Rates (bps) ............................................................................................................. 18
Flow Control Options..................................................................................................... 18
Environmental ................................................................................................................ 18
4
Power Requirements ...................................................................................................... 18
Mechanical ..................................................................................................................... 19
Antenna Information ...................................................................................................... 20
Antenna Strength ................................................................................................. 20
Antenna Details.................................................................................................... 20
RF Exposure Statement.................................................................................................. 23
Overlay Specifications ................................................................................................... 24
Appendix B: Certifications ................................................................................................... 26
FCC Part 15 Class A ...................................................................................................... 26
Radio Frequency Interference (RFI) (FCC 15.105(a).......................................... 26
Labeling Requirements (FCC 15.19) ................................................................... 26
Modifications (FCC 15.21) .................................................................................. 26
Cables (FCC 15.27) ............................................................................................. 26
Industry Canada ............................................................................................................. 27
International EMC Standards......................................................................................... 27
Appendix C: Change Log ..................................................................................................... 28
Revision E ...................................................................................................................... 28
Revision D...................................................................................................................... 28
Revision C...................................................................................................................... 28
5
Introducing the Digi Connect SP &
Digi Connect Wi-SP Hardware
C
H
A
P
T
E
R
1
Hardware Overview
The following figure identifies various Digi Connect SP and Digi Connect Wi-SP connectors, LEDs
and switches.
Digi Connect SP Hardware Overview
DB-9
Ethernet
connector
Power
LEDs
MEI
switch
Reset
button
Note: MEI switches and the Reset button are in the same location for both the Digi Connect
SP and Digi Connect Wi-SP.
6
Digi Connect Wi-SP Overview
LEDs
Digi Connect SP and Digi Connect Wi-SP have three LEDs. Two LEDs are connected directly to
the hardware; the other is software programmable. See the following table for more information.
LED Descriptions
LED
Power
Color
Red (labeled PWR)
Purpose
This LED is software programmable. The default is that
this LED indicates power (and is therefore always on).
See “LEDs” on page 15 for more information
Network link status:
– On - unit is associated with an access point
Link
ACT
7
Green
Yellow
Digi Connect SP Hardware Reference
–
Blinking slowly - unit is in ad hoc mode
–
Blinking quickly - unit is scanning for a
network
This LED is wired to the Ethernet hardware.
– On indicates bad initialization
–
Off indicates ready
–
Blinking indicates network activity
Reset Button
The behavior of the reset button is user-defined. See “Reset Button” on page 16 and the NS520 BSP
Porting Guide for LED programming information.
Antenna
The Digi Connect Wi-SP is available with 1 RP-SMA connector. The antenna is connected to the
product with a reverse polarity SMA connector (sub-miniature size A). The antenna only fits on the
product one way to ensure a proper connection. Another option for both signal reception and design
flexibility is to use a 30cm antenna extension cord (Digi part number DC-ANT-E-24DP) with .5dB
loss to separate the antenna from the product..
Caution: This Part 15 radio device operates on a non-interference basis
with other devices operating at this frequency when using the antennae
listed in the Antenna Specification table. Any changes or modification to
the product not expressly approved by Digi International could void the
user’s authority to operate the device.
Antenna Description
Type
Part number
Gain
Desktop
Dipole
30 cm
Antenna Extension Cord
DC-ANT-24DT
DC-ANT-24DP
DC-ANT-E-24DP
1.8 dBi
2 dBi
-.5dB
8
MEI 232/422/485 Switch Settings
These switches set the MEI (multiple electrical interface) line protocol on the serial interface.
Switch Setting
Function
1
2
3
4
Up
Down
Down
Down
EIA-422/485 full-duplex
Down
Up
Down
–
If up, termination.
EIA-485 half-duplex
Down
Down
Up
–
If down, no termination
EIA-232
*If switch 4 is up, termination.
If down, no termination.
Up/On
*
*
Down/Off
EIA-232
9
Digi Connect SP Hardware Reference
EIA-422/485
Full-Duplex
EIA-485
Half-Duplex
DB-9 Connector
The figure and table provide information on DB-9 pin orientation and pin assignments.
DB-9 Pin Orientation
Pin 5
Pin 6 Pin 9
00000006
Pin 1
DB-9 Pin Assignments
Pin
EIA-232
EIA-422/485
Full-Duplex
EIA-485
Half-Duplex
1
DCD
CTS-
Not used
2
RXD
RXD+
RXD+
3
TXD
TXD+
TXD+
4
DTR
RTS-
Not used
5
GND
GND
GND
6
DSR
RXD-
RXD-
7
RTS
RTS+
Not used
8
CTS
CTS+
Not used
9
NA
TXD-
TXD-
10
JTAG Interface
The Digi Connect SP Development Kit is provided with the case opened, providing access to the
JTAG interface which mates with a JTAG debugger plug (for example, the Macraigor Raven
included in the kit). See the following table for pin assignments on the JTAG adapter block
provided.
JTAG Debugger Connector Pin Assignments
Pin
1
VCC+
Pin
2
Pin
3
GND /TRST
Pin
4
Pin
5
GND TDI
Pin
6
Pin
7
GND TMS
Pin
8
Pin
9
GND TCK
Pin
10
Pin
11
Pin
12
Pin
13
Pin
14
GND TDO
/SRST
VCC+
GND
Digi Connect SP JTAG Debugger Connector
11
Digi Connect SP Hardware Reference
Power Jack
The Power Jack is a locking barrel connector that accepts 9 to 30 VDC +/- 5%. The jack is labeled
as P11 on the development board. The following table shows the polarity of the power jack.
Power Jack Polarity
Contact
Polarity
Center
+9 to +30 VDC
Outer
Ground
The following figure schematically represents the polarity of the power jack. Customers wishing to
purchase the locking barrel connector for their DC supply, please contact Digi.
Power Jack Polarity, Schematic
12
Programming Considerations
C
H
A
P
T
E
R
2
This chapter discusses programming considerations for the Digi Connect SP and Digi Connect Wi-SP
and the NS7520 processor it is based on.
GPIO
General Information
The NS7520 processor supports 16 general purpose I/O (GPIO) pins, some of which are reserved for
specific functions and some of which can be customized. These pins fall into three categories:
Those labeled “Reserved” in the following table are dedicated to a specific use and must
not be reprogrammed, or the unit may not operate correctly. Often, these pins are not
connected to external interfaces.
Those labeled “Allocated” in the following table are exposed to an external interface and
allocated to a specific use by the software but can be customized safely with code
modifications.
Those labeled “Available” are exposed to an external interface, not controlled directly by
the software, and can be customized.
GPIO Registers
Two registers, named PORTA and PORTC, govern the 16 GPIO pins. Each register is responsible for
eight pins, and each GPIO pin uses the following four bits to completely describe its behavior:
Mode (CMODE)
Direction (CDIR)
Special function (CSF). This is only applicable to PORTC.
Data value
The first three bits describe the functionality of the GPIO pin. The data bit provides the current value
of the pin when read and allows control of the value of an output pin when written.
13
Digi Connect SP Hardware Reference
In order to configure a pin as either a GPIO input or GPIO output, the corresponding bit positions in
the appropriate register must be configured according to the information in the following table:
GPIO Configuration
Input
Output
–
CMODE = 0
–
CMODE = 0
–
CDIR = 0
–
CDIR = 1
–
CSF = 0
–
CSF = 0
Since each register controls 8 GPIO pins, it is safest to read the full 32 bit register, modify the bits
corresponding to the pin, and then write the full 32 bits back. In this way, the behavior of other
GPIO pins will be preserved.
For more information regarding the format and programming of the GPIO registers, see the NS7520
Hardware Reference.
GPIO Pin Use
GPIO Pin Use
Register Bit
Category
External
Interface
Description
PORTA7 PORTA0
Reserved
NA
NA
PORTC7
Reserved
NA
NA
PORTC6
Allocated
Used as a power indicator (always on).
It could be reassigned as a general
Connected to the purpose LED. It must remain a GPIO
red LED
output for the LED to operate correctly.
The LED is lit when the signal is a logic
"high."
PORTC5
Available
Connected to the
It should be configured as a GPIO input.
reset button.
PORTC4 PORTC0
Reserved
NA
NA
14
LEDs
General information
The device server has two types of LEDs:
LEDs connected directly to GPIO pins on the processor and controlled directly in
software
LEDs connected to other hardware components (normally the Ethernet hardware) and
not directly programmable by the operating system
The development kit supplies software to control the LEDs. This behavior can often be modified by
manipulating the LED table in the BSP code. See gpio.c for details.
As with any GPIO output, the GPIO register must be properly configured in order to assert values
on the pin. The appropriate bits should be configured as:
CMODE = 0
CDIR = 1
CSF=0
About LEDs
The device server has three LEDs:
The green LED is wired directly to the Ethernet hardware and indicates that a link has
been established.
The yellow LED is wired directly to the Ethernet hardware and signals Ethernet activity.
The red LED is software programmable. It is wired to processor GPIO register bit
PORTC6. The LED is wired to be active high. The development kit software is
implemented by default so that this LED reflects "power" (and is, therefore, always lit).
Flash
General Information
Digi Connect SP and Digi Connect Wi-SP device servers each have 4 MB of flash memory, which is
controlled by chip select 0, located at 0x02000000.
15
Digi Connect SP Hardware Reference
Memory
Digi Connect SP and Digi Connect Wi-SP device servers each have 16 MB of SDRAM memory,
which is controlled by chip select 1, located at 0x00000000 in the processor address space and
aliased at 0x04000000 and 0x08000000. The application program (EOS) is loaded at address
0x08080000.
Reset Button
The device servers have a push button connected to a GPIO pin. This pin is named
"/INIT." In the processor, the GPIO register bit associated with "/INIT" is PORTC5. The GPIO pin
will read as high normally, and low when the button is pushed. See "Reset Button" on page 8 for the
external location.
16
Specifications
A
P
P
E
N
D
I
X
A
Network Interfaces
Digi Connect SP
RJ-45 connector
10/100Base-T
Half- and full-duplex support
Digi Connect Wi-SP
17
Standard: IEEE 802.11b
Data Rate: Up to 11 Mbps with automatic fallback
WEP (64-bit and 128-bit encryption)
WPA (Wi-Fi Protected Access)/WPA2/802.11i
Frequency: 2.4 GHz
Modulation: CCK (11/5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps)
Transmit power: 16 dBm typical
Receive sensitivity:
–
1Mbps: -92 dBm
–
2Mbps: -89 dBm
–
5.5Mbps: -87 dBm
–
11Mbps: -82 dBm
Antenna connector: RP-SMA
10/100Base-T auto-sensing
Half- and full-duplex support
Digi Connect SP Hardware Reference
Serial Interface
One EIA-232/422/485 switch-selectable serial port with full modem control.
Data Rates (bps)
50, 110, 134, 150, 200, 300, 600, 1200, 2400, 3600, 4800, 9600, 19200, 38400, 57600, 115200,
230400
Flow Control Options
RTS/CTS, XON/XOFF, None
Environmental
Ambient Temperature
Digi Connect SP
Digi Connect Wi-SP
-40oF to 185oF
(-40oC to 85oC)
-4oF to 185oF
(-20oC to 85oC)
Storage Temperature
-400F to 2570F
(-400C to 1250C)
Humidty
5% to 90%
Altitude
12000 feet
(3657.60 meters)
Power Requirements
Note: The
Digi Connect SP and Digi Connect Wi-SP must be powered by a
Listed LPS or Class II power supply rated 9-30 VDC, 0.37 A minimum.
18
Mechanical
Digi Connect SP
Length: 3.876 inches (9.846 cm)
Width: 1.680 inches (4.267 cm)
Height: 0.999 inches (2.537 cm)
Unit Weight: 2.29 oz (64.92 g)
Digi Connect Wi-SP
19
Length: 3.876 inches ( 9.846 cm)
Width: 1.680 inches (4.267 cm)
Height: 0.999 inches (2.537 cm)
Unit Weight: 1.968 oz ( 55.792 g)
Antenna: .408 oz (11.567 g)
Total Unit with Antenna: 2.376 oz (67.359 g)
Digi Connect SP Hardware Reference
Antenna Information
Antenna Strength
The following diagram demonstrates the strength of the signal received by the antenna on both a
horizontal and vertical plane. The diagram shows the magnetic field when the antenna is in a
vertical position. The red line represents the horizontal plane and the dotted green lined represents
the vertical plane. You can see in the illustration that at 90degrees, the signal strength is (as
expected) 0.
Radiation Patterns
Antenna Details
Antenna
Description
Dipole
Desktop
DC-ANT-24DP
DC-ANT-24DT
2.4~2.5 GHz
2.4~2.5 GHz
Power Output
2W
1W
DB Gain
2 dBi
1.8 dBi
< or = 2.0
1.92 max
10.0x108.5 mm
105 x4.5 mm
10.5g
11 g
RP-SMA
RP-SMA
Part Number
Frequency
VSWR
Dimension
Weight
Connector
20
Antenna Restriction in North America
Only antennae of the same type listed on the FCC grant, with equal or lower antenna gain, may be
used with the Digi Connect Wi-SP.
Units: mm
Desktop Antenna Dimensions
21
Digi Connect SP Hardware Reference
1.200
(30.5)
1.010
(25.4)
.399
(10.1)
90.0
3.300
(83.8)
bOBITRON
SCALE 3.000
UNITS: mm
3.500
(88.9)
.360
(9.1)
R .125
(3.2)
Dipole Antenna Dimensions
22
RF Exposure Statement
The Digi Connect Wi-SP device complies with the RF exposure limits for humans as called out in
RSS-102. It is exempt from RF evaluation based on its operating frequency of 2400 MHz, and
effective radiated power of less than (20 cm separation) operating at 2400 MHz.
In order to comply with FCC RF exposure limits, dipole antenna should be located at a minimum
distance of 7.9 inches (20 cm) or more from the body of all persons.
23
Digi Connect SP Hardware Reference
Overlay Specifications
The following specifications are for the product overlays.
Digi Connect Wi-SP
Unit: inches
24
Digi Connect SP
Units: inches
25
Digi Connect SP Hardware Reference
Certifications
A
P
P
E
N
D
I
X
B
These products comply with the following standards.
FCC Part 15 Class A
Radio Frequency Interference (RFI) (FCC 15.105(a)
The Digi Connect SP and Digi Connect Wi-SP have been tested and found to comply with the limits
for Class A digital devices pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy, and if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which the user will be required to correct the interference at his own expense.
Labeling Requirements (FCC 15.19)
This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Modifications (FCC 15.21)
Changes or modifications to this equipment not expressly approved by Digi may void the user's
authority to operate this equipment.
Cables (FCC 15.27)
Shielded cables must be used to remain within the Class A limitations.
26
Industry Canada
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le present appareil numerique n'emet pas de bruits radioelectriques depassant les limites
applicables aux appareils numeriques de la class A prescrites dans le Reglement sur le brouillage
radioelectrique edicte par le ministere des Communications du Canada.
International EMC Standards
The Digi Connect SP and Digi Connect Wi-SP meet the following standards.
Standards
Digi Connect
Wi-SP
Digi Connect SP
AS/NZS 3548 CISPR 22
AS/NZS 3548
FCC Part 15 Subpart C
(FCC ID: MCQ-50M1312)
IC RSS 210 (IC:1846A-50M1312)
ICES-003
Emissions
EN 55022
EN 61000-3-2
EN 61000-3-3
EN 301 489- 3
EN 300 328
VCCI
Immunity
EN 55024
UL 60950-1
Safety
CSA 22.2 No. 60950--1
EN 60950
27
Digi Connect SP Hardware Reference
Change Log
A
P
P
E
N
D
I
X
C
The following changes have been made since the last release of this document.
Revision E
Changed barrel connector to locking barrel connector in the “Power Jack” section of Chapter 1.
Added Digi contact information.
Revision D
Updated Antenna drawing
Changed antenna restriction in North America
Added product weight
Revision C
Changed RAM from 8 MB to 16 MB.
Added overlay drawings.
Added desktop antenna information.
Added Japan certification.
.
28
工商网监
湘ICP备2023018690号
