STB5701 datasheet(24/35 Pages) STMICROELECTRONICS

Il numero della parte	STB5701

Spiegazioni elettronici	350 to 400 MHz FSK/ASK receiver (ST-RECORD01 family)

PDF	35 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

Logo

24 / 35 page

Functional description

STB5701

24/35

4.4.1

State pin

The STATE output pin may be configured in one of two ways:

●

To reflect the state of the start code detection block officiated = detected, 0 = searching

or off), the state can be cleared by a programmable time out or a software reset.

●

To operate as a true interrupt with associate status bit and a software clearing

mechanism.

The state output may be optionally inverted.

4.4.2

Data pin

The DATA output pin is driven by one of two sources:

●

The IR_IN pin.

●

The UHF input from the RF front end.

4.4.3

MODE register

The DATA source selected at any time is governed by the MODE register, the options are as

follows:

●

IR_IN only, direct connection.

●

UHF only, direct connection.

●

IR triggered, the output is zero and switched to UHf on detection of a valid start code.

●

IR/UHF arbitrated, the output comes by default from IR_IN, however on detection of a

valid start code the output is switched to select the UHF source. The switch back to IR

is accomplished in one of two ways.

A software reset is programmed.

The time-out counter has been set and has timed out.

STB5701 Scheda tecnica(PDF) 24 Page - STMicroelectronics