RFD21733 Datasheet, PDF (25/76 Pages) List of Unclassifed Manufacturers – Compliance Approved 2.4 GHz RF Transceiver Modules with Built-In RFDP8 Application Protocol

© Copyright, RF Digital
7/10/2011 1:40 AM
Patents Pending
RoHS CE • ESTI
RFD21733 • FCC • IC
RFD21743 • FCC
Approved & Certified
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RFDP8
RF Module
RFD21733
RFD21735
RFD21737
RFD21738
RFD21739
RFDP8
RFDANT
RFD21742
RFD21743
RFD21772
RFD21773
KEYFOBs
The RFDP8 firmware use the 3 mode select inputs to select the operating mode. These inputs are sampled when
the module powers-on.
Some of the operating modes have additional options which are described in the section for that mode.
The RFDP8 firmware cannot be modified by the user. For applications that require alternative functionality,
contact RF Digital for information about custom firmware to fit your specific requirements.
RFDP8 Interference Immunity Algorithm
RF Digital's RFDP8 proprietary patent-pending frequency agility protocol operates in the internationally accepted
2.4 GHz band. The RFDP8's leading-edge advanced algorithm is not burdened by a heavy-weight stack as is
BlueTooth, ZigBee, WLAN and other protocols, which are well suited for cross-manufacturer interoperability. The
RFDP8 protocol is highly robust and effective where there is a need to penetrate through a high saturation of RF
noise which is common in nearly all environments today. It is especially effective and can easily coexist in heavy
WiFi environments, which very few technologies can do successfully without the need of excessive processing
power. The protocol strategically changes channels frequently to deliver its payload to the destination device
reliably, yet not too excessively as to demand too much internal processing power which allows it to run with a
very low current consumption profile and fast start up times allowing substantial flexibility with implementation.
The RFDP8 protocol reduces the amount of on-air traffic and unnecessary chatter due to its unique and highly
efficient design, which does not require bilateral registration and association as do many other technologies
today. The RFDP8 does not require ack-nacks to complete a packet delivery, its unique technique of packet
delivery, recovery and correction allows it to work as a one-way link, hence drastically simplifying users'
applications which always results in more a robust wireless system. The RFDP8 protocol combined with RF
Digital's leading-edge RF Module hardware delivers a highly robust method of delivering user data from point to
point, point to multi-point or multi-point to multi-point, transmitter-receiver, transceiver, serial or switch on/off data
modes. The protocol is designed to work seamlessly with RF Digital's hardware modules, the combination results
in ultra long range at ultra low currents without concern for compliance approvals since modules such as the
RFD21733 come with IC and FCC Approval and Certification for USA and have passed CE - ETSI emission
testing for European requirements. The RFDP8 protocol adds several dB of range gain passively through it's
advanced data recovery technique which pulls valid data out of a noisy environment adding effective gain which
results in more range, delivering the net result, which is a very robust wireless system. All of this is built into the
overhead of the RFDP8 protocol and RF Digital modules, so it's all done behind the scenes, allowing the user to
focus on building their application and simply putting data into the radio device as a wireless pipe and easily
receiving it on the other end.
Electronic Serial Number
Every RF Digital Module has its own 32-bit unique identifier (over 4 billion unique values), known as the Electronic
Serial Number, or ESN. This value is assigned at the factory and cannot be changed by the user.
The ESN is included in every packet that is transmitted, as part of the protocol overhead and is transparent to the
user.
The user does not ordinarily need to know what the ESN is. However, in certain cases it is helpful to know the
serial number, and so a mechanism has been provided to read out the ESN. This method is documented in the
UART section below.
Free Applications Support • Email your application questions to [e-mail]
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