XE1203F Ver la hoja de datos (PDF) - Semtech Corporation

Número de pieza

componentes Descripción

Fabricante

XE1203F

433 MHz / 868 MHz / 915 MHz Low-Power, Integrated UHF Transceiver

Semtech Corporation 

XE1203F

sck

si

A(4) A(3) A(2) A(1) A(0)

/en

so

High impedance

D(7) High impedance

Figure 15: Read sequence of configuration register at address 0

5.2 CONFIGURATION AND STATUS REGISTERS

The XE1203F has several operating modes and configuration parameters which can be programmed by the user or

the application. In addition, status information may be read from the circuit. Some of the operating modes, the

status information and the configuration parameters are stored in a series of internal Configuration and Status

Registers that can be accessed by the microcontroller through the 3-wire serial interface.

There are seven variable Configuration and Status Registers, as listed below in Table 9.

Name

ConfigSwitch

RTParam

FSParam

SWParam

DataOut

ADParam

Pattern

Description

1-bit data to switch between 2 sets of

user-predefined

SWParam

Configuration Registers

Receiver and transmitter parameters

LO, Bitrate, Deviation and other

frequency parameters

2 sets of user-predefined configuration

registers

Status register which can be read

through the 3-wire serial interface

Additional parameters

Reference pattern for the “pattern

recognition” feature

Size

(bits)

1x1

2x8

3x8

6x8

2x8

5x8

4x8

Address

(binary format)

00000

00001 - 00010

00011 - 00101

00110 - 01011

01100 - 01101

01110 - 10010

10011 - 10110

Table 9: Configuration and Status Registers List

All the bits that are referred to as “reserved” in this section should be set to “0” during write operations.

5.2.1 The ConfigSwitch Register

When operating the XE1203F, it might by useful to quickly switch between two pre-defined operating modes, to

save time and traffic on the 3-wire serial interface bus. This may occur when the XE1203F is required to switch

quickly between receive and transmit mode, when it has to operate on two different carrier frequencies, or when it

has to switch between the high linearity mode B and the high sensitivity mode A. For that purpose, the five

parameters stored in the SWParam Configuration Register are duplicated: the configuration set#1 and the

configuration set #2.

© Semtech 2007

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