PR
EL
IMI
NA
RY
SW71122
MLX71122 RF Receiver
Programming Software Manual
39011 71122 01
Page 10 of 21
SW71122-Manual
Rev. 004
Aug/11
4.6 IC Status - Frame
The IC Status frame displays information about the internal state of the IC if the Multi Functional Output
(MFO) mode is set to
SPI out
(left figure). A click on the Refresh button reads out the data from the MFO-pin
of the IC.
The following data is displayed:
Field
Value
Meaning
IFFVAL
Integer number between 0 and 255
Tuning value of the internal IF filter
tuned
Filter tuned or auto-tuning disabled
tune up
Tuning up the filter frequency
tune dn
Tuning down the filter frequency
IFFSTATE
CCO fail
Master oscillator of filter does not work
locked
PLL locked in
LD
Not locked
PLL not locked in
Low
V
RSSI
in lower region
In range
V
RSSI
in mid region
RSSI
High
V
RSSI
in upper region
LD Time
Time in ms
Approximate PLL lock time
LD is only displayed if
Lock Detect
is selected in
function of LDRSSIL bit
or MFO-mode is set to
LD-out
. In LD-out mode the additional field
LD Time
is displayed
(right figure) and the PLL lock in time is
measured every time when data is send to the IC.
4.7 Frequency Pre-Selection - Frame
Four fixed receive frequencies at 315.0MHz, 433.9MHz, 868.3MHz or 915.0MHz can be pre-selected to ease
the initialization of the receiver. All settings of the receiver are affected and are reset to their default value
with respect to the receive frequency.
