Digi Connect SP & Digi Connect Wi-SP Hardware Reference TM 90000540_C TM
Digi International Inc. 2003, 2004, 2005. All Rights Reserved. The Digi logo is a registered trademark of Digi International, Inc. Digi Connect SP and Digi Connect Wi-SP are trademarks of Digi International, Inc. NetSilicon, NET+Works, NET+OS, and NET+ are trademarks of NetSilicon, Inc. All other trademarks mentioned in this document are the property of their respective owners.
Contents About This Guide ..................................................................................................................... 7 Purpose ............................................................................................................................. 7 Related Documentation .................................................................................................... 7 Chapter 1: Introducing the Digi Connect SP & Digi Connect Wi-SP Hardware ............
Contents Environmental................................................................................................................ 26 Power Requirements ...................................................................................................... 27 Mechanical ..................................................................................................................... 27 Antenna Information ................................................................................................
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.
Related Documentation 8
Introducing the Digi Connect SP & Digi Connect Wi-SP Hardware C H A P T E R 5 Hardware Overview The following figure identifies various Digi Connect SP and Digi Connect Wi-SP connectors, LEDs and switches.
Hardware Overview 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.
Digi Connect Wi-SP Overview LEDs The Digi Connect SP and Digi Connect Wi-SP provide three LEDs. Two of the 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).
Reset Button LED Descriptions LED Color Purpose Network link status: – On - unit is associated with an access point Link ACT Green Yellow – 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.
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..
DB-9 Connector *If switch 4 is up, termination. If down, no termination. Up/On * * Down/Off EIA-422/485 Full-Duplex EIA-232 EIA-485 Half-Duplex DB-9 Connector The figure and table provide information on DB-9 pin orientation and pin assignments.
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- 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).
Power Jack Digi Connect SP JTAG Debugger Connector Power Jack The Power Jack is a 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.
Power Jack Polarity, Schematic 17
Power Jack 18 Digi Connect SP Hardware Reference
Programming Considerations C H A P T E R 6 This chapter discusses programming consideration 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.
GPIO 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.
GPIO Pin Use GPIO Pin Use Register Bit Category External Interface Description PORTA7 - PORTA0 Reserved NA NA PORTC7 Reserved NA NA PORTC6 Allocated Connected to the red LED Used as a power indicator (always on). It could be reassigned as a general purpose LED. It must remain a GPIO output for the LED to operate correctly. The LED is lit when the signal is a logic "high." PORTC5 Available Connected to the reset button. It should be configured as a GPIO input.
Flash 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).
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 12 for the external location.
Reset Button 24 Digi Connect SP Hardware Reference
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 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.
Serial Interface 10/100Base-T auto-sensing Half- and full-duplex support Serial Interface One EIA-232/422/485 switch-selectable serial port with full modem control.
Specifications 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. 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 Length: 4.188 inches ( 10.64cm) Width: 1.680 inches (4.267 cm) Height: 0.999 inches (2.537 cm) Unit Weight: 1.9 oz ( 53.
Antenna Information 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.
Specifications Antenna Description Dipole Desktop < or = 2.0 1.92 max 10.0x108.5 mm 105 x4.5 mm 10.5g 11 g RP-SMA RP-SMA VSWR Dimension Weight Connector Antenna Restriction in North America Only antennas of the same type listed on the FCC grant, with equal or lower antenna gain, may be used with the Digi Connect Wi-SP.
Antenna Information Units: mm Desktop Antenna Dimensions 30 Digi Connect SP Hardware Reference
Specifications Dipole Antenna Dimensions 31
RF Exposure Statement 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 100 milliwatts. This would be less than the 3 watt requirement for a mobile device (>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.
Specifications Overlay Specifications The following specifications are for the product overlays.
Overlay Specifications 34 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.
Industry Canada 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. 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.
Certifications 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.
International EMC Standards 38 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 C Changed RAM from 8 MB to 16 MB. Added overlay drawings. Added desktop antenna information. Added Japan certification. .
Revision C 40 Digi Connect SP Hardware Reference
