Computime CT EM2606 User Manual

CT-EM2606 ZigBee Ready RF Transceiver Modules

ZigBee- Ready RF Transceiver Modules EM-2606 Series Specification

CT-EM2606 ZigBee Ready RF Transceiver Modules

Table of Content

1. General Description .................................................................................................................3

2. Applications ...............................................................................................................................3

3. Features.....................................................................................................................................3

4. Absolute Maximum Ratings ....................................................................................................4

5. Recommended Operating Conditions...................................................................................4

6. Electrical Specifications...........................................................................................................4

7. Introduction................................................................................................................................6

8. Typical application block .........................................................................................................6

9. Pin Assignment.........................................................................................................................7

10. Pin Description..........................................................................................................................7

11. Block Diagram...........................................................................................................................9

12. Circuit Description ....................................................................................................................9

13. SIF Module Programming and Debug Interface................................................................10

14. Power Management ...............................................................................................................10

15. RF Frequency Detail ..............................................................................................................11

16. Antenna Design Considerations...........................................................................................12

17. Product Approvals ..................................................................................................................13

18. Mechanical Dimensions ........................................................................................................15

19. Ordering Information ..............................................................................................................16

20. Document Revision History...................................................................................................16

CT-EM2606 ZigBee Ready RF Transceiver Modules

ZigBee- Ready RF Transceiver Modules

1. General Description

The CT-EM2606 RF Transceiver Modules is compact surface mounted modules specially designed for Ember ZigBee™ protocol stack for wireless networks, EmberZNet, based on IEEE 802.15.4 standard in the 2.4GHz world-wide ISM band. The complete module is only 25.4 x 32.3 x 4mm .They both integrate a 2.4GHz, IEEE 802.15.4-compliant transceiver with a 16-bit network processor (XAP2b core) to run EmberZNet. They contain embedded Flash and integrated RAM for program and data storage. It utilizes the non-intrusive SIF module for powerful software debugging and programming of the network processor.

2. Applications

Home

automation &

building control

Home

appliances &

alarms

Monitoring of

remote

systems

Lighting controls

Sensor data

capturing

3. Features

 Complete ZigBee-ready module with or without integrated chip antenna

 Integrated IEEE 802.15.4 PHY and MAC layer

 12MHz XAP2b 16-bit network processor core

 Integrated FEM

 Non-intrusive debug interface (SIF)

 SPI interface for communication and controlled by the Host using the EmberZNet

Serial Protocol (EZSP)

 Internal RC oscillator for timer

 16 channels in the 2.4 GHz ISM band

 On-chip regulator for 2.7-3.6V operation , three sleep low power modes

 -15dBm------20dBm output power, SW controlled

CT-EM2606 ZigBee Ready RF Transceiver Modules

4. Absolute Maximum Ratings

Parameter

Regulator voltage (VDD_PADS)

Voltage on nSSEL INT, MOSI, MISO, SCLK, nSSEL, PTI_EN, PTI_DATA, nHOST_INT, SIF_CLK, SIF_MISO, SIF_MOSI, nSIF_LOAD, SDBG, LINK_ACTIVITY, nWAKE, nRESET

Storage temperature

Under no circumstances should the absolute maximum ratings given above be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device.

Test Conditions

Min. Max. Unit

- 0.3 3.6 V

- 0.3 VDD_PADS+0.3 V

- 40 + 140 °C

5. Recommended Operating Conditions

Parameter

Regulator input voltage (VDD_PADS)

Test Conditions

Min. Typ. Max. Unit

2.7

3.6

Core input voltage (VDD_24MHZ, VDD_VCO, VDD_RF, VDD_IF, VDD_PADSA, VDD_FLASH, VDD_SYNTH_PRE, VDD_CORE)

Temperature range

1.7 1.8 1.9 V

- 40

+ 85 °C

6. Electrical Specifications

T=25℃, VCC = 3.0V, Fo =2450MHZ, if nothing else stated.

Parameter Min Typ. Max Unit Condition / Note

Operating frequency 2400 2483.5 MHz

Number of channels 16 For IEEE 802.15.4 compliance

Channel spacing 5 MHz For IEEE 802.15.4 compliance

Input/output impedance 50 Ohm

Data rate 250 kbit/s

DSSS chip rate 2 Mc/s

Frequency stability +/-40 ppm

Transmit power -17 20 dBm Programmable from firmware

Programmable in 5MHz steps, 5 MHz steps for IEEE 802.15.4 compliance

CT-EM2606 ZigBee Ready RF Transceiver Modules

Parameter Min Typ. Max Unit Condition / Note

Sensitivity -98 dBm

Adjacent channel rejection +/-5 MHz

Adjacent channel rejection +/-10 MHz

Co-channel rejection -6

Supply voltage 2.7 3.6 V

Current consumption, RX mode

Current consumption, TX mode

Deep sleep current 5.0 μA

35/35 dB

40/40 dB

36 mA Max RX sensitivity (normal mode)

38 mA Max RX sensitivity (boost mode)

190 mA

PER = 1% PER, 20byte packet defined by IEEE 802.15.4 Boost mode

IEEE 802.15.4 compliance at -82 dBm

Flash Memory 1 Kbit

MCU clock frequency 12 MHz

RC OSCILATOR frequency

10 KHZ

CT-EM2606 ZigBee Ready RF Transceiver Modules

7. Introduction

The CT-EM2606 modules are specially designed for ZigBee application. They provide a fast jump start design for system integrators or electronic designers wishing to use ZigBee wireless technologies. The module contains qualified RF hardware and enough processor power to run the EmberZNet stack or other ZigBee network stack (depending on version), making it a powerful platform for building wireless networking products. ZigBee Coordinators (ZC), ZigBee Routers (ZR), and ZigBee End Devices (ZED) are all supported and are programmed onto the module together with a custom application. Minimal RF design experience is need to use CT-EM2606 modules.

8. Typical application block

HOST

NWAKE

NHOST_INT

NSSEL

SCLK MISO MOSI

2.7- 3.6V

Debug and

programming

interface

NREST PTI_EN

PTI-DATA

SIF_CLK SIF_MISO SIF_MOSI

NSIF_LOAD

Ember

EM260

LINK_ACTIVITY

FEM

CT-EM2606 ZigBee Ready RF Transceiver Modules

9. Pin Assignment

TOP VIEW

10. Pin Description

Pin# Signal Direction Description

SIF_CLK DI SIF Interface clock

SIF_MISO DO SIF Interface master in/slave out

SIF_MOSI DI SIF Interface master out/slave in

nSIF_LOAD DI/DO SIF Interface load strobe

SDBG DO Spare Debug Signal

LINK_ACTIVITY DO Link and Activity signal

GROUND GND Ground

IDLE_EN I

Enable the FEM in deep sleep mode , Active high, in other state, set it in low level

CT-EM2606 ZigBee Ready RF Transceiver Modules

GROUND GND Ground

BRD PI Power Supply Input

nRESET DI Reset, active low

MOSI DI SPI Data, Master Out/Slave In

MISO DO SPI Data, Master In/Slave Out

SCLK DI SPI Clock

GROUND GND Ground

nRTS DO UART RTS

nSSEL_INT/nCTS DI SPI Slave Select

PTI_EN DO PTI Frame signal

PTI_DATA DO PTI Data signal

TXD DO UART TXD

nHOST_INT/RXD DO/DI Host Interrupt Signal

nWAKE DI Wake Interrupt Signal

GROUND GND Ground

CT-EM2606 ZigBee Ready RF Transceiver Modules

ocesso

11. Block Diagram

Bit Network Pr

Rout to HOST

Application

ZigbeeTM

Network

IEEE 802.15.4

User

MAC

2.7 – 3.6V

IEEE 802.15.4

RF Transceiver

Figure 5 : Block Diagram

RF FEM

12. Circuit Description

The module contains an IEEE 802.15.4 compliant RF transceiver, high speed oscillator, RC oscillator and RF FEM . The module is intended to running the Ember ZigBee software or other ZigBee network implementation, depending on the specific version.

The application software together with the ZigBee protocol software stack can be programmed in Flash memory through SIF module, using an evaluation board from Ember InSight Desktop.

To support user-defined applications, the module exposes the Ember Serial API over the SPI, which allows application development to occur on a Host microcontroller of choice. In addition to the four SPI signals, two additional signals, nHOST_INT and nWAKE, provide an easy-to-use handshake mechanism between the Host and the module. Also, an integrated voltage regulator, power-on-reset circuitry, sleep timer, and low-power sleep modes are available. The deep sleep mode draws less than 5μA allowing products to achieve long battery life.

For further details on the transceiver (Ember EM260), please consult data sheet at

http://www.ember.com

CT-EM2606 ZigBee Ready RF Transceiver Modules

13. SIF Module Programming and Debug Interface

SIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the primary programming and debug interface of the CT-260. The SIF module allows external devices to read and write memory-mapped registers in real-time without changing the functionality or timing of the XAP2b core.

The SIF interface provides the following:

 IC production test (especially analog)  PCB production test  Firmware download  Product control and characterization

The pins are:

 SIF_LOADB  SIF_CLK  SIF_MOSI  SIF_MISO

The maximum serial shift speed for the SIF interface is 48MHz. SIF interface accesses can be initiated even when the chip is in idle, deep sleep or power down modes. An edge on nSIF_LOAD wakes the chip to allow SIF cycles.

14. Power Management

The module supports four different power modes: active, idle, deep sleep, and power down.

Active mode is the normal, operating state of the module.

While in idle mode, code execution halts until any interrupt occurs. All modules including the radio continue to operate normally. The EmberZNet stack automatically invokes idle as appropriate.

Deep sleep mode and power down mode both power off most of the functions, including the radio, and leave only the critical chip functions powered. The internal regulator is disabled. All output signals are maintained in a frozen state. Upon waking from deep sleep or power down mode, the internal regulator is re_enabled. Deep sleep and power down result in the same sleep current consumption. The two sleep modes differ as follows: the module can wake on both an internal timer and an external signal from deep sleep mode; power down mode can only wake on an external signal.

CT-EM2606 ZigBee Ready RF Transceiver Modules

15. RF Frequency Detail

The following table shows the RF channels as defined by the IEEE 802.15.4 standard.

RF channel Frequency

11 2405MHz

12 2410MHz

13 2415MHz

14 2420MHz

15 2425MHz

16 2430MHz

17 2435MHz

18 2440MHz

19 2445MHz

20 2450MHz

21 2455MHz

22 2460MHz

23 2465MHz

24 2470MHz

25 2475MHz

26 2480MHz

The output power level of em250 can be configured in the range -32 to 3dBm and the gain of FEM is 17dB, So the module output can controlled in range -15 to 20dBm. The RF transceiver uses direct sequence spread spectrum (DSSS) with 2 Mchip/s chip rate, giving a raw data rate of 250 kbit/s. The modulation format is Offset – Quadrature Phase Shift Keying (O-QPSK). It is robust even under noisy environments when sharing the same frequency band with other applications.

The use of RF frequencies and maximum allowed RF power should according to different national regulations. The CT-260 is complying with the applicable regulations for the world wide 2.4GHz ISM band.

[Subject to final approval: Specifically it complies with the European Union R&TTE directive meeting EN 300 328 and EN300 440 class 2. It also meets the FCC CFR47 Part15 regulations for use in the US and the ARIB T-66 for use in Japan.]

CT-EM2606 ZigBee Ready RF Transceiver Modules

16. Antenna Design Considerations

The CT-EM2506 module includes an integrated PCB trace antenna. An optional MMCX connector can be specified, enabling connection to a 50-ohm external antenna of the user’s choice..

The PCB antenna employs an F-Antenna topology that is compact and supports an omni-directional radiation pattern. To maximize antenna efficiency, an adequate ground plane must be provided on the host PCB. If positioned correctly, the ground plane on the host board under the module can contribute significantly to antenna performance. The position of the module on the host board and overall design of the product enclosure contribute to antenna performance. Poor design effects radiation patterns and can result in reflection, diffraction, and/or scattering of the transmitted signal.

Here are some design guidelines to help ensure antenna performance:

• Never place the ground plane or route copper traces directly underneath the antenna portion of the module.

• Never place the antenna close to metallic objects.

• In the overall design, ensure that wiring and other components are not placed near the antenna.

• Do not place the antenna in a metallic or metallized plastic enclosure.

• Keep plastic enclosures 1cm or more from the antenna in any direction.

Test at 2440MHZ

__ Vertical Polarization Gain

(dBi)

Avg : -14.8

--- Horizontal Polarization Gain

(dBi)

Avg : -3.4

CT-EM2606 ZigBee Ready RF Transceiver Modules

17. Product Approvals

17.1 FCC Approvals

The CT-EM2606 has been designed to meet all national regulations for World-wide use. Using the integrated antenna it conforms to FCC CFR 47 Part 15 (USA).

This device complies with Part 15 of the 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.

The device CT-EM2606 carries FCC authorization and is marked with the FCC ID Number. Whilst any device into which this authorized module is installed will not normally be required to obtain FCC authorization, this does not preclude the possibility that some other form of authorization or testing may be required for the finished device.

When the CT-EM2606 module is integrated inside another device/product, then the

outside surface of that device/product must display a label referring to the enclosed

module. This exterior label can use wording such as “Contains Transmitter Module FCC ID:DICT-EM2606” or “Contains FCC ID: DICT-EM2606”

wording that expresses the same meaning may be used.

To meet the Section 15.209 emission requirements in the restricted frequency bands of Section 15.205, the transceiver transmitter power for the CT-EM2606 module needs to be reduced from the typical maximum setting on the upper two channels (2475 MHz and 2480 MHz). Maximum values are TBD.

FCC statement： If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

, although any similar

CT-EM2606 ZigBee Ready RF Transceiver Modules

17.2 CE Certificate

With the integrated antenna the CT-EM2606 has been tested and conforms to the following standards:

• Radio: ETSI EN300 328 V1.6.1

• EMC: ETSI EN301 489-17 V1.2.1

• EMC: ETSI EN301 489-1 V1.6.1

• Safety: IEC/EN60950-1

If the CT-EM2606 module is incorporated into an OEM product, the OEM product manufacturer must ensure compliance of the final product to the European EMC, and low voltage/safety standards. A Declaration of Conformity must be issued for each of these standards and kept on file as described in the R&TTE Directive. The final product must not exceed the specified power ratings, as specified in this specification. If any of these specifications are exceeded in the final product then a submission must be made to a notified body for compliance testing to all of the required standards

CT-EM2606 ZigBee Ready RF Transceiver Modules

18. Mechanical Dimensions

4.1

1.6

23.22

25.4

3.81

2.54

1.91

2.54

32.4

0.38

2.54 Pitch Typ

5.2

1.53

22.61

10.52

1.53

2.79Typ 28 pads

1.78Typ 28 pads

Unit in mm

CT-EM2606 ZigBee Ready RF Transceiver Modules

19. Ordering Information

Ordering Part Number Description

ZigBee-ready RF module, 1kB Flash, PCB

CT-EM2606

trace antenna, 20dBm Version FCC/CE certificate

20. Document Revision History

Document Revision change

1.0

Draft

Computime CT EM2606 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual