XE1203 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

XE1203

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

Unspecified 

tbit

datain or

data

no

filtering

IN freq_synth

Data Sheet

XE1203

stairecase

filtering

trise

IN freq_synth

Figure 9. Modulation with and without pre-filtering

The characteristic of the filtering is the ratio trise/tbit. The value of this ratio is programmable on two values with the

register “RTParam_Stair”, as shown in the following table.

RTParam_Stair

0

1

trise/tbit

10 %

20 %

When using the filtering option i.e. “RTParam_Filter” set “1”, only the following bit rates and frequency deviations

can be used.

FSParam_Dev

00101000

00110111

01010000

10100000

11001000

Frequency deviation

40 kHz

55 kHz

80 kHz

160 kHz

200 kHz

16

D0308-214

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