Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com
Issue 4, 1 August 2011
RPC3G
869/914 MHz Radio Packet Controller
Modules: RPC3G-914-64: IC + BiM3G-914-64
RPC3G-869-64: IC + BiM3G-869-64
IC’s:
RPC-000-DIL:
RPC-000-SO:
RPC-000-SS:
18 pin DIL IC
18 pin SO IC
20 pin SSOP IC
The RPC3G is an intelligent transceiver
modules, which enable a radio network/link
to be simply implemented between a
number of digital devices. The module
RPC3G-914-64-RPSMA module
`
combines a BiM3G UHF RF transceiver and
a 64kbps packet controller.
FEATURES
. Crystal controlled PLL FM circuitry for both Tx and Rx
. Up to 50 meter in-building range, 200m open ground
. Built-in self-test / diagnostics / status LED’s
. Complies with ETSI EN 300 220-3
. Complies with ETSI EN 301 489-3
. Single 5V supply @ < 27mA
. 64kbps half duplex
. Free format packets of 1 - 27 bytes
. Packet framing and error checking are user transparent
. Collision avoidance (listen before transmit)
. Direct interface to 5V CMOS logic
. Power save mode
INTRODUCTION
The RPC3G is a self-contained plug-on radio port which requires only a simple antenna, 5V supply and a
byte-wide I/O port on a host microcontroller (or bi-directional PC port).
The module provides all the RF circuits and processor intensive low level packet formatting and packet
recovery functions required to inter-connect an number of microcontrollers in a radio network.
A data packet of 1 to 27 bytes downloaded by a Host microcontroller into the RPC3G's packet buffer is
transmitted by the RPC3G’s transceiver and will "appear" in the receive buffer of all the RPC3G's within
radio range.
A data packet received by the RPC3G’s transceiver is decoded, stored in a packet buffer and the Host
microcontroller signalled that a valid packet is waiting to be uploaded.
RF specifications are provided on BiM3G-869-64, BiM3G-914-64 RF transceiver datasheet.
transmit / receive
download
upload
download
upload
HOST
HOST
RPC3G
figure 1: RPC3G + Host -controller
Radiometrix Ltd, RPC3G
page 1
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