SPIRIT1 datasheet(7/94 Pages) STMICROELECTRONICS

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SPIRIT1

Description

Doc ID 022758 Rev 3

7/94

Description

The SPIRIT1 is a very low-power RF transceiver, intended for RF wireless applications in

the sub-1 GHz band. It is designed to operate both in the license-free ISM and SRD

frequency bands at 169, 315, 433, 868, and 915 MHz, but can also be programmed to

operate at other additional frequencies in the 300-348 MHz, 387-470 MHz, and 779-956

MHz bands. The air data rate is programmable from 1 to 500 kbps, and the SPIRIT1 can be

used in systems with channel spacing of 12.5/25 kHz, complying with the EN 300 220

standard. It uses a very small number of discrete external components and integrates a

configurable baseband modem, which supports data management, modulation, and

demodulation. The data management handles the data in the proprietary fully

programmable packet format also allows the M-Bus standard compliance format (all

performance classes).

However, the SPIRIT1 can perform cyclic redundancy checks on the data as well as FEC

encoding/decoding on the packets. The SPIRIT1 provides an optional automatic

acknowledgement, retransmission, and timeout protocol engine in order to reduce overall

system costs by handling all the high-speed link layer operations.

Moreover, the SPIRIT1 supports an embedded CSMA/CA engine. An AES 128-bit

encryption co-processor is available for secure data transfer. The SPIRIT1 fully supports

antenna diversity with an integrated antenna switching control algorithm. The SPIRIT1

supports different modulation schemes: 2-FSK, GFSK, OOK, ASK, and MSK.

Transmitted/received data bytes are buffered in two different three-level FIFOs (TX FIFO

and RX FIFO), accessible via the SPI interface for host processing.

SPIRIT1 Scheda tecnica(PDF) 7 Page - STMicroelectronics