XE1203F 查看數據表（PDF） - Semtech Corporation

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XE1203F

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

Semtech Corporation 

XE1203F

SWParam_Freq_1 MSB (Byte

address 00111)

or

SWParam_Freq_2 MSB (Byte

address 01010)

Bit 7

Bit 0

00000000

00000000

00000000

11111111

11111111

SWParam_Freq_1 LSB

(Byte address 01000)

or

SWParam_Freq_1 LSB

(Byte address 01011)

Resulting LO setting

Note: reference frequency = 39.0 MHz

Bit 7

Bit 0

00000000

00000001

00000010

11111111

11111110

F0, where F0 depends on the selected frequency

band (see RTParam_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

Table 14: Examples of LO frequency settings

5.2.5 DataOut Status Register

Status register which can be read through the 3-wire serial interface

Name

DataOut_Rssi

RESERVED

DataOut_MSB_fei

DataOut_LSB_fei

Bits Address Description

7-6

01100 RSSI output:

0 0 -> lowest level, ≤VTHR1

0 1 -> 2nd level, VTHR1<RSSI level≤VTHR2

1 0 -> 3rd level, VTHR2<RSSI level≤VTHR3

1 1 -> highest level, VTHR3<RSSI level

5-4

01100 RESERVED

3-0

01100 Fei output (MSB)

7-0

01101 Fei output (LSB)

Ferror = (Br/8)*int(DataOut_MSB_fei & DataOut_LSB_fei)

Where int(x) = integer value of the binary representation of x

Table 15: DataOut Status Register

5.2.6 ADParam Configuration Register

Additional parameters

Name

ADParam_Psize

ADParam_Ptol

Bits Address Description

7-6 01110 Size of reference pattern recognition word:

0 0 -> 8 bits

0 1 -> 16 bits

1 0 -> 24 bits

1 1 -> 32 bits

5-4 01110 Number of tolerated errors for the pattern recognition:

00 -> 0 error

01 -> 1 error

10 -> 2 errors

11 -> 3 errors

© Semtech 2007

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