MLX71122_16 Datasheet, PDF (8/59 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71122
300 to 930MHz FSK/FM/ASK Receiver
Datasheet
1.4. Enable/Disable in ABC Mode
ENRX
Description
0
Shutdown mode
1
Receive mode
Pin ENRX is pulled down internally. Device is in shutdown by default, after power supply on.
If ENRX = 0 and SPISEL = 1 then operating modes according to OPMODE bit (refer to control word R0).
If ENRX = 1 then OPMODE bit has no effect (hardwired receive mode).
1.5. Demodulation Selection in ABC Mode
MODSEL
Description
0
FSK demodulation
1
ASK demodulation
Pin MODSEL has no effect in SPI mode (SPISEL = 1). We recommend connecting it to ground to avoid a
floating CMOS gate.
1.6. Programming Modes
SPISEL
0
1
Description
ABC mode (8 channels preconfigured)
SPI mode (programming via 3-wire bus)
1.7. Preconfigured Frequencies in ABC Mode
A
B
C
0
0
0
0
1
0
1
0
0
1
1
0
0
0
1
0
1
1
1
0
1
1
1
1
Receive Frequency
FSK1: 369.5 MHz
FSK5: 388.3 MHz
FSK2: 371.1 MHz
FSK4: 376.9 MHz
FSK3: 375.3 MHz
FSK7: 394.3 MHz
FSK6: 391.5 MHz
FSK8: 395.9 MHz
REVISION 014 – AUGUST, 2016
390 10 71122 01
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