MLX71122_16 Datasheet, PDF (45/59 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71122
300 to 930MHz FSK/FM/ASK Receiver
Datasheet
4.1.7. Control Word R6
Name
IFFPRES
IFFHLT
IFFTUNE
ROCUR
Bits
[7:0]
[8]
[9]
[11:10]
Description
IFF preset value
0101 1011 value is 91
IFF DAC preset at start of automatic tuning
IFF halt
0 auto tuning running
1 _{auto tuning halted}
suspends IFF automatic tuning
IFF tuning
0 disable and load DAC with IFFPRES
1 _enable
reference Oscillator core current
00 ^85µA
01 170µA
10 _270µA
11 _355µA
4.1.8. Control Word R7 (Read-only Register)
Name
IFFVAL
IFFSTATE
LDRSSIL
RSSIH
Bits
[7:0]
[9:8]
[10]
[11]
Description
IFF adjustment value
see also IFFPRES in section 4.1.7 (R6)
IFF automatic tuning state
00 ^{filter tuned or auto-tuning disabled}
01 tuning up the filter frequency
10 _{tuning down the filter frequency}
11 _{master oscillator of filter does not work}
lock detector or RSSI low flag
0 PLL not locked or RSSI value in lower region
1 _{PLL locked or RSSI value above lower region}
depends on SHOWLD in section 4.1.2 (R1)
RSSI high flag
0 RSSI value below upper region
1 _{RSSI value in upper region}
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REVISION 014 – AUGUST, 2016
390 10 71122 01
Page 45 of 59