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SPIRIT1 RF Transceiver Overview Slide 5

Shown on this slide are the main features of SPIRIT1. The frequency bands, modulation schemes, and the air data rate were discussed previously. In addition, the SPIRIT1 offers programmable output power up to 11 dBm (16dBm in Boost Mode), programmable channel spacing with a resolution of 12.5 kHz, plus it supports antenna diversity. A key benefit of the SPIRIT1 is very low power consumption, with a transmission current consumption of 20 mA, an RX current consumption of only 9 mA, and a shutdown current consumption of only 2.5 nA. Unique data link features include allowing the user to implement the frequency hopping. An internal protocol engine which allows automatic acknowledgement, retransmission, automatic preamble, and synchronization of the packets, and address recognition and packet filtering in the reception. In addition to this, SPIRIT1 offers a unique 96 bytes FIFO in transmission and reception, and features an encryption engine that can be used to protect the information. SPIRIT1 supports several standards, particularly the wireless M-BUS and the 6 Low Pan, and is compliant with several regulations, ARIB for the Japanese market, FCC, EN. ST offers this device with three native packet configurations; basic, stack and wireless M-BUS, and the user can configure those packets using the SPIRIT1 internal registers. The SPIRIT1 provides link quality indicators and received signal qualifiers, the SSI, LQI, PQI, and so on, which tell the user the quality of the communication with this device. Finally, the device supports the CSMA/CA for conflict avoidance, this functionality is key for users that want to build mesh networks.

PTM Published on: 2013-02-27