INTRODUCTION
The FRPC2 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 interconnect an number of microcontrollers in a radio network.
A data packet of 1 to 60 bytes downloaded by a Host microcontroller into the FRPC2's packet buffer is transmitted by the FRPC2's transceiver and will "appear" in the receive buffer of all the FRPC2's within radio range.
A data packet received by the FRPC2's transceiver is decoded, stored in a packet buffer and the Host microcontroller signaled that a valid packet is waiting to be uploaded.
Typical features include:
SAW controlled FM transmitter and superhet receiver
Reliable 50m in-building range, 200m open ground
Built-in self-test / diagnostics / status LED's
Complies with ETSI EN300 220-3 regulations
Complies with ETSI EN 301 489-3 regulations
Single 5V supply @ < 20mA
160kbit/s 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
