Owner manual

ManualsBrandsRainbow Electronics ManualsWireless HeadsetsRC2100





RC2100

2005 Radiocrafts AS RC2100 Data Sheet (rev. 1.0) Page 1 of 22

2.45 GHz DSSS Multi-Channel RF Transceiver Module

Product Description

The RC2100 Direct Sequence Spread Spectrum RF Transceiver Module is a compact

surface-mounted module for multi-channel operation in the 2.45 GHz ISM band. The module

is completely shielded and pre-certified for operation under the European radio regulations for

license-free use, and complies with FCC (US) and ARIB (Japan) regulations.

Applications

• OEM equipment

• Home and building automation

• Radio modems

• Point-of-sales terminals

• Bar code scanners

• Telemetry stations

• Fleet management

Features

• Direct Sequence Spread Spectrum (DSSS) for improved co-existence

• Compact shielded module for SMD mounting

• Embedded RF protocol (RC232™)

• 83 channels at 2.400 – 2.483 GHz

• Buffered mode: 0.6 – 19.2 kBd UART Baud rate

250 kbit/s on air RF data rate

Up to 125 byte data buffer

• Un-buffered transparent mode: 250 kbit/s streaming data rate

• 2.8 – 5.5 V supply voltage, 3/5 V compliant I/O

• 50 Ohm single-ended antenna I/O

• Conforms with EN 300 440 (Europe), FCC CFR 47 part 15 (US), ARIB STD-T66 (Japan)

Quick Reference Data

Parameter Min Typ Max Unit

Frequency band 2400 2483 MHz

Number of channels 83

RF data rate 250 kbit/s

UART data rate 0.6 19.2 kBaud

Output power (programmable) -25 0 dBm

Sensitivity -94 dBm

Adjacent Channel Rejection (5

MHz)

39 dB

Alternate Channel Selectivity

(10 MHz)

55 dB

Blocking, out-of-band -24 dBm

Supply voltage 2.8 5.5 Volt

Current consumption, RX 22 mA

Current consumption, TX 19 mA

Current consumption, SLEEP 85

µA

Current consumption, OFF 0.003

µA

Temperature range -30 +85

°C

PRELIMINARY INFORMATION. Specifications and information herein are subject to change without notice.

Summary of content (22 pages)

PAGE 1
RC2100 2.45 GHz DSSS Multi-Channel RF Transceiver Module Product Description The RC2100 Direct Sequence Spread Spectrum RF Transceiver Module is a compact surface-mounted module for multi-channel operation in the 2.45 GHz ISM band. The module is completely shielded and pre-certified for operation under the European radio regulations for license-free use, and complies with FCC (US) and ARIB (Japan) regulations.
PAGE 2
RC2100 Typical Application Circuit 2.8 - 5.5 V To host MCU or RS232/422/485 driver { GND CTS/RXTX/RXEN RTS/TXEN CONFIG TXD/SCL RXD/SDA GND GND VCC ON/OFF VDD GND RF GND NC Antenna Quick Product Introduction How do I transmit data? Send your data to the RXD pin on the module. Use the UART format with settings (19200, 8, 1.5, N, no flow control). Up to 125 bytes are buffered in the module.
PAGE 3
RC2100 30 CCA/PA_EN SCL SDA Pin Assignment 29 28 27 26 25 24 23 GND 1 14 GND CTS/RXEN/RXTX 2 13 VCC RTS/TXEN 3 12 ON/OFF CONFIG 4 11 VDD TXD 5 10 GND RXD 6 9 RF GND 7 8 GND 16 17 18 19 20 21 22 RESET 15 2005 Radiocrafts AS RC2100 Data Sheet (rev. 1.
PAGE 4
RC2100 Pin Description Pin no Pin name 1 GND 2 CTS/RXTX/RXEN 3 RTS/TXEN 4 CONFIG 5 6 7 8 9 10 11 TXD RXD GND GND RF GND VDD 12 ON/OFF 13 VCC 14 15-21 22 GND RESERVED RESET 23 CCA/PA_EN 24-28 29 RESERVED SCL 30 SDA Description System ground UART Clear to Send, UART RXTX (for RS485), Receive Mode Enable, or SLEEP mode activation. Connect to VDD if not used. Internal 100 k series resistor, 2.7 V output. UART Request to Send, Transmit Mode Enable, or SLEEP mode activation.
PAGE 5
RC2100 30 GND 1 CTS/RXEN/RXTX 2 3 CONFIG 4 TXD 5 RXD 6 GND 7 29 CCA/PA_EN 28 27 26 25 24 23 Voltage regulator Communication controller DSSS RF Transceiver 15 16 17 18 19 20 21 22 14 GND 13 VCC 12 ON/OFF 11 VDD 10 GND 9 RF 8 GND RESET RTS/TXEN SCL SDA Block Diagram Circuit Description The module contains a communication controller with embedded RC232™ protocol software, a Direct Sequence Spread Spectrum high performance RF transceiver and an internal voltage r
PAGE 6
RC2100 The RF protocol and the configuration commands are described in general in the RC232™ User Manual. The complete list of configurable parameters stored in non-volatile memory that apply for RC2100 is given in the table “Configuration Memory” page 9. For configurable parameters not stored in non-volatile memory and other configuration commands, please refer to the RC232 User Manual. The supply voltage is connected to the VCC pin.
PAGE 7
RC2100 RC232™ Embedded Protocol The module offers a buffered packet radio as well as an un-buffered transparent mode in the RC232™ embedded protocol. Using the buffered packet radio mode, all data to be sent is stored in the module before they are transmitted by the RF circuitry. Likewise, when data is received they are stored in the module before they are sent to the host. This allows the communication controller to add address information and to do error check of the data.
PAGE 8
RC2100 ADDRESS_MODE = 2 is the standard RC232 addressing, using the SYSTEM_ID and the UNIQUE_ID. The SYSTEM_ID must be equal if two modules shall communicate. See the RC232 User Manual for further details. Unique for RC2100 is the ADDRESS_MODE = 9 which use a PAN_ID in addition to the SYSTEM_ID and the UNIQUE_ID. The PAN_ID is a 16 bit network address that must be equal if two modules shall communicate. The PAN_ID is set in the configuration memory.
PAGE 9
RC2100 Configuration Memory The table below shows the complete list of configurable parameters stored in non-volatile memory for RC2100. These values can be changed using the ‘M’ command. All addresses and arguments must be sent as binary values to the module (not as ASCII representation for hex or decimal).
PAGE 10
RC2100 CRC_MODE 0x15 Reserved Reserved Reserved UNIQUE_ID 0x16 0x17 0x18 0x19 SYSTEM_ID Reserved Reserved Reserved Reserved Reserved Reserved UNIQUE_ DESTINATION_ID SYSTEM_ DESTINATION_ID Reserved Reserved Reserved Reserved Reserved BROADCAST_ ADDRESS Reserved Reserved Reserved Reserved Reserved Reserved Reserved UART_BAUD_RATE Reserved Reserved Reserved Reserved UART_FLOW_CTRL DATA_INTERFACE Reserved Reserved Reserved Reserved Exit from memory 2005 Radiocrafts AS Unique ID (UID) System (net or fa
PAGE 11
RC2100 configuration 2005 Radiocrafts AS should be sent RC2100 Data Sheet (rev. 1.0) mode the ‘X’ command must be sent after ‘>’ is received.
PAGE 12
RC2100 Power Management The module can be set in SLEEP mode or OFF mode in order to reduce the power consumption. The low power SLEEP mode is entered by using the SLEEP command (‘Z’), see RC232™ User Manual, or by pulling both RXEN and TXEN low. In sleep mode the module will not receive or detect incoming data, neither from the host (UART port) nor from the RF transceiver. The module is awakened from the SLEEP mode by a positive edge on the CONFIG (only when ‘Z’-command is used), RXEN or TXEN pins.
PAGE 13
RC2100 Timing Information The figure and table below shows the timing information for the module when changing between different operating states. The IDLE state is the normal state where the module search for preamble on the air and wait for a character to be received on the UART. RXD is the state when receiving characters from the host filling up the internal buffer. TX state is when the data is transmitted on the air. RX state is when data is received from the air after a preamble detection.
PAGE 14
RC2100 tOFF-IDLE OFF tRESET-IDLE RESET tSLEEP-IDLE SLEEP tC-CONFIG CONFIG IDLE IDLE IDLE CONFIG MEMORY CONFIG ’M’ Symbol tRX-TXD tTXD tTXD-IDLE tPACKETTIMEOUT TRXD-CTS tRXD-TX TTX-IDLE tOFF-IDLE tRESET-IDLE tSLEEP-IDLE tCONFIG-> tC-CONFIG tCONFIG-M tMEMORYCONFIG tCONFIG-IDLE IDLE ’X’ ’C’ CONFIG tCONFIG-IDLE tMEMORY-CONFIG CONFIG 0xFF tCONFIG-IDLE IDLE ’X’ Value 600 us Description / Note Time from last byte is received from the air until first character is sent on the UART Min 621
PAGE 15
RC2100 tTX 300 us (1 char) 780 us (16 chars) tTX = # bytes to send x 32 us/byte (at 250 kbit/s) approximatelly. Add 8 overhead bytes if addressing and CRC is not used. Add additionally 2 extra bytes for addressing (9 with PAN_ID used) and 2 extra bytes for CRC if enabled. Example: To send one character (no CRC or addressing) takes totally 2.4 ms from the character is received on the UART until the transceiver is back in IDLE mode.
PAGE 16
RC2100 RF Frequency, Output Power Levels and Data Rates The following table shows the available RF channels and their corresponding frequencies, nominal output power levels and available data rates. RF channel 1-83: fRF=2400+N MHz where N is the channel number Factory setting: 50: 2450 MHz Output power 1: -25 dBm 2: -15 dBm 3: -10 dBm 4: -5 dBm 5: -0 dBm Data rate 250 kbit/s fixed RF channel and output power level can be set using the configuration commands ‘C’ and ‘P’ respectively.
PAGE 17
RC2100 RSSI and Link Quality Indicator The module provide a digital Received Signal Strength Indicator (RSSI) through the ‘S’ command and a Link Quality Indicator (LQI) through the ‘Q’ command. The module returns an 8 bit character indicating the signal strength or link quality for the last received data packet, not the instantaneous value. The signal strength and the link quality indicator can be used as an indication of the fading margin.
PAGE 18
RC2100 Antenna Connection The antenna should be connected to the RF pin. The RF pin is matched to 50 Ohm. If the antenna connector is placed away from the module at the motherboard, the track between the RF pin and the connector should be a 50 Ohm transmission line. On a two layer board made of FR4 the width of a microstrip transmission line should be 1.8 times the thickness of the board, assuming a dielectric constant of 4.8.
PAGE 19
RC2100 PCB Layout Recommendations The recommended layout pads for the module are shown in the figure below. All dimensions are in thousands of an inch (mil). The circle in upper left corner is an orientation mark only, and should not be a part of the copper pattern. The area underneath the module should be covered with solder resist in order to prevent short circuiting the test pads on the back side of the module. A solid ground plane is preferred.
PAGE 20
RC2100 Absolute Maximum Ratings Parameter Min Supply voltage, VCC -0.3 Voltage on any pin -0.3 Input RF level Storage temperature -50 Operating temperature -30 Max 5.5 5.5 10 150 85 Unit V V dBm °C °C Caution ! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage. Under no circumstances the absolute maximum ratings given above should be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device.
PAGE 21
RC2100 30 – 1000 MHz 1 – 12.75 GHz Supply voltage 2.8 Supply voltage rise time Current consumption, RX/IDLE -57 -47 dBm 5.5 V 150 us 300 440, FCC CFR47 Part 15 and ARIB STD-T66 If appropriate rise time can not be guaranteed, the RESET pin should be activated after supply voltage is stable. 21.4 mA Apply over entire supply voltage range Current consumption, TX Power level 1: -27 dBm 2: -17 dBm 3: -12 dBm 4: -7 dBm 5: -2 dBm 9.7 10.9 12.1 14.5 18.
PAGE 22
RC2100 Product Status Definitions Data Sheet Identification Preliminary Product Status Engineering Samples and First Production Definition This data sheet contains preliminary data, and supplementary data will be published at a later date. Radiocrafts reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Disclaimer Radiocrafts AS believes the information contained herein is correct and accurate at the time of this printing.