XE1202I027 Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

XE1202I027

433MHz / 868MHz / 915MHz Low-power, integrated UHF transceiver

Unspecified 

Data Sheet

XE1202

Name

Bits

FSParam_BR

2-0

FSParam_Freq

7-0

7-0

Byte Address

00010

00011

00100

Description

Bit rate:

0 0 0 -> 4.8 kb/s

0 0 1 -> 9.6 kb/s

0 1 0 -> 19.2 kb/s

0 1 1 -> 38.4 kb/s

1 0 0 -> 76.8 kb/s

others -> not valid

LO frequency in 2’s-complement

representation:

00…0 -> fLO = middle of the range

0X…X -> fLO = higher than the

middle of the range

1X…X -> fLO = lower than the

middle of the range

MSB = bit 7 of byte at pos. 00011

LSB = bit 0 of byte at pos. 00100

See example below

Example of LO frequency setting in FSParam_Freq

Byte Address

00011

Bit 7

Bit 0

00000000

00000000

00000000

11111111

11111111

Byte Address

00100

Bit 7

Bit 0

00000000

00000001

00000010

11111111

11111110

Resulting LO setting

Note: reference frequency = 39.0 MHz

F0, where F0 depends on the selected

frequency band (see FSParam_Band )

F0 = 434.0 MHz for the 433-435 MHz band

F0 = 869.0 MHz for the 868-870 MHz band

F0 = 915.0 MHz for the 902-928 MHz band

F0 + 500 Hz

F0 + 2 * 500 Hz

F0 – 500 Hz

F0 – 2 * 500 Hz

5.2.3 DataOut register

Name

Bits

DataOut_RSSI

7-6

DataOut_FEI

7-0

When

RTParam_Fsel = 0

Byte Address

00101

00101

Description

RSSI output:

0 0 -> lowest level

0 1 -> 2nd level

1 0 -> 3rd level

1 1 -> highest level

FEI output:

Output of the up/down counter in

2’s-complement representation

MSB = bit 7

16

D0211-105

Share Link: