EW
N
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
Issue 2, 09 February 2007
SP2-433-160
UHF SpacePort Transceiver
The SP2-433-160 is a highly integrated
intelligent transceiver module, which
enable a radio network/link to be
simply
implemented
between
a
number of digital devices. The module
combines a UHF radio transceiver
and a 160kbps Fast Radio Packet
controller (FRPC).
SAW controlled FM transmitter and superhet receiver
Reliable 50 meter in-building range, 200m open ground
Built-in diagnostic / debug test modes
Complies with ETSI EN 300 220-3
Complies with ETSI EN 301 489-3
Single 5V supply @ < 25mA
160kbps half duplex
Free format packets of 1 - 60 bytes
Packet framing and error checking are user transparent
Collision avoidance (listen before transmit)
Direct interface to 5V CMOS logic
Power save mode
SP2-433-160
I
NTRODUCTION
The SP2 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 60 bytes downloaded by a Host microcontroller into the SP2's packet buffer is
transmitted by the SP2’s transceiver and will "appear" in the receive buffer of all the SP2's within radio
range.
A data packet received by the SP2’s transceiver is decoded, stored in a packet buffer and the Host
microcontroller signalled that a valid packet is waiting to be uploaded.
transmit / receive
download
download
HOST
upload
figure 1: SP2 + Host
µ
-controller
SP2
upload
HOST
Radiometrix Ltd, SP2 data sheet
page
1
RADIOMETRIX [ RADIOMETRIX LTD ]
