User's Manual

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2014 Cervis, Inc.

SRF309 User Manual

3 November 2014

U081.0.11 User Manual for SRF309

™

Summary of content (18 pages)

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™ SRF309 User Manual 3 November 2014 U081.0.11 User Manual for SRF309 2014 Cervis, Inc.
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Module SRF309 This document is the property of Cervis, Inc. and cannot be copied, modified, e-mailed, or reproduced without the express prior written consent of Cervis, Inc. Cervis, Inc. reserves the right to change this manual or edit, delete, or modify any information without prior notification. FCC Statements 15.19 – Two Part Warning This device complies with Part 15 of the FCC rules.
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User Manual Table of Contents Table of Contents .......................................................................................................................... i List of Figures ............................................................................................................................... i List of Tables ................................................................................................................................. i Cervis Inc. Safety Precautions ..............
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Module SRF309 Notes and Observations ii U081.0.
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User Manual Cervis Inc. Safety Precautions  Read and follow all instructions.  Failure to abide by Safety Precautions may result in equipment failure, loss of authority to operate the equipment, and personal injury.  Use and maintain proper wiring. Follow equipment manufacturer instructions. Improper, loose, and frayed wiring can cause system failure, equipment damage, and intermittent operation.
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Module SRF309 1.0 SRF309 Introduction The SRF309 receive/transmit module (RTM) is based on a single-chip radio frequency (RF) transceiver integrated circuit (RFIC), an Atmel AT86RF212B. The SRF309 RTM is intended to be integrated into Cervis Inc. products, providing a wireless RF connectivity option. The SRF309 RTM operates in the 915 MHz ISM band, using spread spectrum modulation with a maximum conducted RF transmit power of +8.60dBm at the antenna port.
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User Manual Figure 1. SRF309 RF section Front Figure 2. SRF309 RF section Back 1.2 SRF309 Pinouts Table 1-4 show the pinouts and interface signals on several alternative packaging options for the SRF309 RTM: Table 1.
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Module SRF309 7 /RF_CS RFIC chip select Low from SPI master 8 RF_IRQ RFIC interrupt output Input to SPI master 9 RF_PAEN Enable external PA High from SPI master 10 RF_HGM/BPA Enable external LNA or Function not used in SRF309 Read BPA jumper Input to SPI master 11 GND ground Low impedance ground 12 GND ground Low impedance ground 13 DISPLAYCS Display chip select Low from SPI master 14 /RFEE_CS (reserved) EE chip select Low from SPI master 15 DISPLAYRS Display register sel
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User Manual Figure 3. 07440305-9H-U-12R, component side, shield, internal label, external antenna connector 2014Cervis, Inc.
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Module SRF309 Table 2. 07610304 PCB (SRF309 Type 2) – connector J10 Pin Name Signal Details 1 SPI_CLK SPI data clock in Clock from SPI master 2 GND ground Low impedance ground 3 MISO SPI data out Data from SPI slave 4 MOSI SPI data in Data from SPI master 5 RF_SLP_TR RFIC control Multipurpose control signal from master 6 /RF_RST RFIC reset Low from SPI master 7 /RF_CS RFIC chip select Low from SPI master 8 RF_IRQ RFIC interrupt output Input to SPI master 9 RF1_3VD +3.
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User Manual Table 3.
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Module SRF309 Figure 5. 07440306-9H-12R, component side, shield and internal label not shown 8 U081.0.
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User Manual Table 2. 14001200 PCB (SRF309 Type 4) – connections Pin Name Signal Details 1 SPI_CLK SPI data clock in Clock from SPI master 2 GND ground Low impedance ground 3 MISO SPI data out Data from SPI slave 4 MOSI SPI data in Data from SPI master 5 RF_SLP_TR RFIC control Multipurpose control signal from master 6 /RF_RST RFIC reset Low from SPI master 7 /RF_CS RFIC chip select Low from SPI master 8 RF_IRQ RFIC interrupt output Input to SPI master 9 RF1_3VD +3.0-3.
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Module SRF309 Type 4 Module Application Engineering: The Type 4 module requires that the host application provide suitable mechanical and electrical mounting, control and power signals, an approved antenna that is properly mounted and a proper RF transmission line to connect the RF port on the module to the antenna feed port. Mounting: This module must be mounted on a ground plane that extends at least 8mm from the RF shield edges.
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User Manual 2.0 SRF309 Installation When integrating an SRF309 RTM into a host application, the user must provide all text in the “FCC Statements” and “Industry Canada Statements” in the host application’s user manual (see Forward Material). The text must not be modified in any way and presented in a conspicuous manner that the end user can be reasonably expected to access.
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Module SRF309 All external connection pints designate as signal “GND” should be connected to the host application “GND” circuit so as to maintain as low a resistive and reactive impedance as practical. The PCB hosting the RTM should be fabricated with low impedance copper floods that connect to “GND”. The SRF309 RTM can safely operate with a supply voltage over the range of 3.0-3.3V with minimal changes in RF performance. Testing was performed at 3.3V, the preferred supply voltage.
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User Manual SFR309 RT module must maintain an antenna separation distance >20cm away from areas that are likely to be occupied by human body parts. These separation requirements must be included in end-user manuals for host applications that include an SRF309 RT module. 2014Cervis, Inc.