ON Semiconductor’s AMIS−49587 is an IEC 61334−5−1 compliant power line carrier modem using spread−FSK （S−FSK） modulation for robust low data rate communication over power lines. AMIS−49587 is built around an ARM 7TDMI processor core， and includes the MAC layer. With this robust modulation technique， signals on the power lines can pass long distances. The half−duplex operation is automatically synchronized to the mains， and can be up to 2400 bits/sec. The product configuration is done via its serial interface， which allows the user to concentrate on the development of the application. The AMIS−49587 is implemented in ON Semiconductor mixed signal technology， combining both analog circuitry and digital functionality on the same IC.