SPIRIT1 datasheet(61/94 Pages) STMICROELECTRONICS

Nome de Peças	SPIRIT1

Descrição Electrónicos	Low data rate, low power sub-1GHZ transceiver

PDF	94 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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61 / 94 page

SPIRIT1

Transmission and reception

Doc ID 022758 Rev 3

61/94

9.9

Data FIFO

In the SPIRIT1 there are two data FIFOs, a TX FIFO for data to be transmitted and an RX

FIFO for the received data.

The length of both FIFOs is 96 bytes.

The SPI interface is used to read from the RX FIFO and write to the TX FIFO (see

Figure 10) starting from the address 0xFF.

Figure 10.

Threshold of the linear FIFO

The FIFO has two programmable thresholds: FIFO almost full and FIFO almost empty.

The FIFO almost full event occurs when the data crosses the threshold from below to above.

The TX FIFO almost empty threshold can be configured using the field txaethr in the

FIFO_CONFIG[0] register. The RX FIFO almost empty threshold can be configured using

the field rxaethr in the FIFO_CONFIG[2] register.

The FIFO almost empty event occurs when the data crosses the threshold from above to

below. The TX FIFO almost full threshold can be configured using the field txafthr in the

FIFO_CONFIG[1] register. The RX FIFO almost full threshold can be configured using the

field rxafthr in the FIFO_CONFIG[3] register.

SPIRIT1 Folha de dados(PDF) 61 Page - STMicroelectronics