DC-WEM-02T-JT-DB Digi International, DC-WEM-02T-JT-DB Datasheet

no-image

DC-WEM-02T-JT-DB

Manufacturer Part Number
DC-WEM-02T-JT-DB
Description
BOARD DEV WI-EM MODULE JTAG
Manufacturer
Digi International
Series
Digi Connect Wi-EM®r
Type
802.11br
Datasheets

Specifications of DC-WEM-02T-JT-DB

Frequency
2.4GHz
Wireless Frequency
2.4 GHz
Interface Type
SMA
Modulation
CCK, DBPSK, DQPSK
Security
64/128 WEP, WPA, 802.11i, TKIP
For Use With/related Products
Digi Connect Wi-EM S Modules
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
602-1011
7
Digi Connect EM  &
Digi Connect Wi‐EM
Hardware Reference 
90000632_H

Related parts for DC-WEM-02T-JT-DB

DC-WEM-02T-JT-DB Summary of contents

Page 1

Digi Connect EM  & Digi Connect Wi‐EM Hardware Reference  90000632_H ...

Page 2

... Digi International Inc. 2010. All Rights Reserved. The Digi logo is a registered trademark of Digi International, Inc. Connectware and Digi Connect EM and Digi Connect Wi-EM 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. ...

Page 3

Contents About This Guide ..................................................................................................................... 5 Scope of Reference Manual ............................................................................................. 5 Kits Contents .................................................................................................................... 5 Related Documentation .................................................................................................... 7 Support Information ......................................................................................................... 7 Chapter 1: About the Embedded Module............................................................................ 9 Overview .......................................................................................................................... 9 Types of Modules........................................................................................................... 10 Connectors: Power ...

Page 4

... Embedded Module LEDs............................................................................................... 41 Embedded Module Reset ............................................................................................... 42 Flash ............................................................................................................................... 43 Appendix A: Specifications ................................................................................................. 45 Network Interfaces......................................................................................................... 45 Serial Interface ............................................................................................................... 46 Data Rates (bps) ............................................................................................................. 46 Flow Control Options..................................................................................................... 46 Environmental................................................................................................................ 46 DC Characteristics ......................................................................................................... 46 Mechanical .................................................................................................................... 48 Layouts and Dimensions................................................................................................ 49 Recommended PCB Layouts ......................................................................................... 61 Antenna Information ...................................................................................................... 66 RF Exposure Statement.................................................................................................. 72 Safety Statements........................................................................................................... 72 Appendix B: Certifications ................................................................................................. 75 FCC Part 15 Class B ...................................................................................................... 75 Industry Canada ...

Page 5

About This Guide • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ...

Page 6

Complete development board with EIA-232 serial ports, signal status  indicators, logic analyzer connectors, test points, and a self-contained GPIO test bed. Cables  – DB-9 to DB-9 ...

Page 7

... See the NS 7520 Hardware Reference for information on the NS 7520 chip. 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 Digi International 11001 Bren Road East Minnetonka, MN 55343 U.S.A. Customer Service and Support United States: 1 877-912-3444 Other Locations: 1 952-912-3444 www ...

Page 8

& ...

Page 9

About the Embedded Module Overview Digi Connect EM and Digi Connect Wi-EM Overview The embedded modules are part of the Digi Connect family of device servers that provide simple, reliable and cost-effective network connections for serial devices. ...

Page 10

... To guard against damage to the module due to electrostatic discharge (ESD), do not remove it from its protective packaging until you have been properly grounded. To ground yourself, put the wrist strap on (included in the package) and then attach the clip to a metal surface. Input voltage for the module is 3.3 VDC.  Types of Modules ...

Page 11

... Model DC-EM-02T-JT DC-EM-02T-NC DC-EM-02T-S DC-EM-02T-C Digi Connect Wi-EM Modules Model Description --- Used for development purposes only --- JTAG interface DC-WEM-02T-JT --- Pin headers LED functionality --- Dual RP-SMA Antenna Connector DC-EM-02T- Digi Connect EM Modules Description --- Used for development purposes only --- JTAG interface --- Pin headers for Ethernet and LED functionality ...

Page 12

... No JTAG interface --- LED array --- DC-WEM-02T-C Dual RP-SMA Antenna Connector --- DC-WEM-02T-S Ordered independently of either development or integration kit for use in your implementation. -S: No JTAG, w/ LED array, w/RJ-45/antenna connectors, for use with Digi Note: Firmware -C: No JTAG, w/LED array, RJ-45 / antenna connectors, for use with Custom ...

Page 13

... Another option for both signal reception and design flexibility is to use an antenna extension cord (Digi part number DC-ANT-E-24DP) to separate the antenna from the module. This allows the module to fit inside your product but the antenna to be placed outside the device ...

Page 14

... Power and Serial Interface Pin Assignments Signal Name VCC GND Reference Ground for input power RXD/GPIO-7 TXD/GPIO-6 DTR/GPIO-5 CTS/GPIO-2 DCD/GPIO-1/SPI_EN Port 1 DCD (input)/GPIO-1/SPI enable DSR/GPIO-3 /RST RXD/GPIO-9 TXD/GPIO-8 RJ-45 Ethernet Interface TXD- RXD+ ...

Page 15

... A). The antenna only fits on the module one way to ensure a proper connection. Another option for both signal reception and design flexibility is to use an antenna extension cord (Digi part number DC-ANT-E-24DP) to separate the antenna from the module. This allows the module to fit inside your product but the antenna to be placed outside the device ...

Page 16

Reset Switch The behavior of the reset switch is determined by software, which means that it has a predefined behavior in the integration kit. In the development kit, its ...

Page 17

LED behavior can be determined by your implementation. See the following table for more information.. Pin Integration Kit LED Header Digi Connect EM EM Serial port activity: 1 (+) Top left Off - the serial channel is idle. (green) 3(-) ...

Page 18

Digi Connect EM Pin Header Locations (Top view) Ethernet pin header, P13 The pins in the Ethernet header are configured as shown: Pin Signal 1 Ethernet transmit + 2 Ethernet ...

Page 19

Digi Connect Wi-EM Pin Header Locations (Top view) LED pin header LED pins and pin header configuration are described in the "LED Behaviors" table on page 17 ...

Page 20

& ...

Page 21

About the Development Board Overview This chapter provides information on the development board, a hardware platform from which you can determine how to integrate the embedded module into your design. For additional information, see the schematic and ...

Page 22

Basic Description Serial port 2 Serial signaling LEDs GPIO/serial switch banks JTAG connector for debugger Status LEDs CR19 Main Digi Connect EM connector Ethernet ...

Page 23

... Serial port 1 and port 2 are DB-9 male connectors labeled P1 and P2. Use the following figure and table for pin orientation and pin assignment information. Serial Port Pin Orientation Signal Signal Port Pin 1 Pin 2 1 DCD RXD Not 2 RXD Connected Pin 1 Pin 5 Pin 6 Pin 9 ...

Page 24

Ethernet Port (P12) The Ethernet port of the Digi Connect EM embedded module (labeled P12 8-pin RJ-45 jack meeting the requirements of ISO 8877 for 10/100Base-T. When two descriptions are shown for a ...

Page 25

Connectors and Blocks The development board provides the following connectors and blocks: JTAG Debugger Connector (P4)  SPI Connector (P11) and SPI Jumper Block  Logic Signal Analyzer Header (P6)   Main Connector (P8) JTAG Debugger Connector (P4) This ...

Page 26

JTAG Debugger Connector Pin Orientation JTAG Debugger Connector Pin Assignments Pin Pin Pin Pin Signal VCC+ GND ...

Page 27

Pin Pin 1 2 Signal SPI-EN GND SPI-CLK SPI Jumper Block The SPI jumper block determines whether the SPI connector is connected or not. If SPI is off (the default), serial and GPIO signals are routed to switch banks 1 ...

Page 28

... Logic Analyzer Header Pin Orientation &         Pin 1 Pin 19 Logic Analyzer Header Pin Assignments Pin Signal Not connected 9 /RST 10 Not connected 11 DTR/GPIO-5 12 TXD-2/GPIO-8 13 CTS/GPIO-2 14 RXD-2/GPIO-9 15 DSR/GPIO-3 16 TXD-1/GPIO-6 17 RTS/GPIO-4/SPI_CLK 18 RXD-1/GPIO-7 19 DCD/GPIO-1/SPI_EN 20 GND Pin 2 Pin 20 ...

Page 29

... This 12-pin connector is used to interface with the embedded module. See the following figure for pin orientation. Main Connector Pin Orientation Power Jack (P17) The Power Jack is a barrel connector that accepts VDC +/- 5%. The jack is labeled P17. The following table shows the polarity of the power jack Pin 1 ...

Page 30

... SW1, and SW4 works with SW2. See "GPIO Switch Bank 1 (SW1) and 2 (SW2)" on page 31 for more information. See the following table for SW3 and SW4 switch definitions &         Ground +9 to +30 VDC ...

Page 31

... If GPIO is set to an output by software, switches must be set to the left (high).  These switches are used in conjunction with SW3 and SW4.  GPIO Switch Banks 3 and 4 Settings Switch Switch Left Bank Number Position 1 DCD 2 CTS SW3 3 DSR 4 RTS 5 DTR 6 TXD-1 7 RXD-1 ...

Page 32

Development Board LEDs The development board contains 21 LEDs labeled CR1 through CR21. The following table lists and describes the ...

Page 33

... The board labels are adjacent to each test point on the board. The test point numbers are in the development board schematic drawings. The following table lists the test point number, board label, and a brief description of each test point. LED Descriptions Description Color or State Yellow Green DCD Off Yellow Green DSR Off GPIO-1 through GPIO-9. On Off All can be used for input or output ...

Page 34

... TP13 IO-3 GPIO-3 TP14 IO-4 GPIO-4 TP15 IO-5 GPIO-5 TP17 3.3V 3.3V Supply TP20 RESET Reset (active low) TP21 E+ Ethernet Power + TP22 E- Ethernet Power - TP23 V-IN 9-30 VDC Input TP24 GND Ground TP25 GND Ground TP26 IO-8 GPIO-8 TP27 IO-7 GPIO-7 ...

Page 35

Test Point Descriptions Test Board Description Point Label TP28 IO-6 GPIO-6 TP29 IO-9 GPIO ...

Page 36

& ...

Page 37

Programming Considerations This chapter addresses the embedded modules programming considerations. Note: GPIO General Information The NS7520 processor supports 16 general purpose I/O (GPIO) lines, some of which are reserved for specific functions and some of which can ...

Page 38

GPIO Registers Two registers, PORTA and PORTC, govern the 16 GPIO pins. Each is responsible for eight GPIO pins, and each pin has four bits that completely describe its behavior. The four bits that describe the ...

Page 39

GPIO Pin Use Name TXD/ GPIO-6 DTR/ GPIO-5 See the description RXD/ GPIO-7 GPIO Pin Use Register External Category Bit Interface Pin 4 on the PORTA7 Allocated main header Pin 6 on the PORTA6 Allocated main header PORTA5, Pin 5 ...

Page 40

... Used for the port 1 serial CTS signal but can be reassigned as GPIO input or output. If used with the development board, this pin maps to GPIO-2. Used for the port 1 serial DCD signal but can be reassigned as GPIO input or output. If used with the development board, this pin maps to GPIO-1. ...

Page 41

Name Green LED RXD2/ GPIO-9 Yellow LED Embedded Module LEDs General information The embedded module has two types of LEDs: LEDs connected directly to GPIO pins on the processor and controlled directly  in software  LEDs connected to other ...

Page 42

For information on LED control, see the NET+Works BSP Porting Guide. About Embedded Module LEDs Embedded Module LED Description LED Green ...

Page 43

Soft Reset NET+OS provides an internal facility to enact a soft reset, but it is the responsibility of a specific implementation to choose a reasonable trigger to invoke it. One choice is to use a GPIO pin as a signal ...

Page 44

& ...

Page 45

Specifications Network Interfaces Digi Connect Wi-EM Embedded Module Standard: IEEE 802.11b  Data Rate Mbps with automatic fallback  Frequency: 2.4 GHz  Modulation: CCK (11/5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps)  ...

Page 46

... Flow Control Options RTS/CTS, XON/XOFF, None Environmental Ambient Temperature Storage Temperature Humidty Altitude DC Characteristics The following tables provide DC characteristics for operating conditions, inputs, and outputs &         Digi Connect EM Digi Connect Wi- ...

Page 47

Operating Conditions Symbol Description V Supply Voltage CC n/a Power Supply Ripple I Supply Current CC Input Current as “0” (57K pull-up) Input Current as “1” (57K pull-up) I HighZ Leakage Current OZ I Output Drive ...

Page 48

output in active state. When power rises above 2.93V, the reset remains for approximately 200 ms to allow the system clock and other circuits to stabilize. The rise time of ...

Page 49

Layouts and Dimensions The following dimensions and layouts are for both the Digi Connect Wi-EM and Digi Connect EM strongly recommended that you consider using the Digi Connect Wi-EM footprint for future flexibility. All dimensions are in inches. ...

Page 50

Digi Connect Wi-EM (w/LED Array) Top ...

Page 51

Front        ...

Page 52

Bottom & ...

Page 53

Digi Connect Wi-EM (w/LED Pin Headers) Top        ...

Page 54

Front & ...

Page 55

Bottom        ...

Page 56

Digi Connect EM (w/RJ-45 and LED Array) Top .200 ...

Page 57

Front        ...

Page 58

Bottom .405 1.835 .100 & ...

Page 59

Digi Connect EM (with Ethernet and LED Pin Headers) Top .100 1.835 .405 1.475 .739 1.575 .125 1.935 5 9       ...

Page 60

Front & ...

Page 61

Bottom .100 .100 .710 Recommended PCB Layouts The following graphics are the recommended PCB layouts for the Digi Connect Wi-EM and Digi Connect EM (both populated and unpopulated versions recommended that you use the Digi Connect Wi-EM PCB ...

Page 62

Digi Connect Wi-EM (w/LED Array ...

Page 63

Digi Connect Wi-EM (w/LED Pin Headers Pin        ...

Page 64

Digi Connect EM (w/RJ-45 and LED Array) .100 1.935 ...

Page 65

Digi Connect EM (with Ethernet and LED Pin Headers) . .005 1.935 .710 .028 .100 Pin 1 .4615 .100 .1805 .0315 .445 .955 1.575 .100 .040 ...

Page 66

Antenna Information Antenna Strength The following diagram demonstrates the strength of the signal received by the antenna on both a horizontal and ...

Page 67

Radiation Patterns for PCB Mount Antenna        ...

Page 68

... &         Dipole Desktop 2.4~2.5GHz 2W 1W 2dBi 1.8dBi < 2.0 1.92 max. 108 10.0 mm 105 mm x 4.5 mm 10.5g 11g RP-SMA DG-ANT-20DP-BG DC-ANT-24DT *PCB Mount 2.4~2.5 GHz 4.9~5.9GHz 10W >2dBi < 2.5 24.13 x 10.67 mm < 1g U.FL DG-ANT-20CB-AG ...

Page 69

Dipole Antenna Dimensions        ...

Page 70

Desktop Antenna Dimensions & ...

Page 71

PCB Mount Antenna Dimensions        ...

Page 72

Exposure Statement The Digi Connect Wi-EM module complies with the RF exposure limits for humans as called out in RSS-102. ...

Page 73

Do not touch uninsulated ethernet wiring if lightning is likely!   Do not touch or move the antenna(s) while the unit is transmitting or receiving. Do not hold any component containing a radio such that the antenna is very ...

Page 74

& ...

Page 75

Certifications These products comply with the following standards. FCC Part 15 Class B Radio Frequency Interference (RFI)(FCC 15.105) The Digi Connect EM and Digi Connect Wi-EM embedded modules have been tested and found to comply with the ...

Page 76

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 ...

Page 77

... The products listed above have been tested at an External Test Laboratory certified per FCC rules and has been found to meet the FCC, Part 15, Class B, Emission Limits. Documentation is on file and available from the Digi International Homologation Department. Digi International 11001 Bren Road East ...

Page 78

International EMC Standards The Digi Connect EM and Digi Connect Wi-EM meet the following standards: ...

Page 79

Sample Application: TTL Signals to EIA-232 The following schematic is an example of how to convert the module’s TTL signals to EIA-232        ...

Page 80

&   ...

Page 81

Change Log The following changes have been made since the last revision of this document. Revision H Corrected Dipole and PCB Mount antenna part numbers. Revised the Sample Application schematic, specifically the pin information for the 2x6 ...

Page 82

Updated UL labeling description Revision E Added Japan certification Added desktop antenna information Improve dipole antenna drawing Reformatted tables for easier reading Added antenna extension cord information Added more receive sensitivity ...

Page 83

...

Related keywords