PR
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IMI
NA
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SW71122
MLX71122 RF Receiver
Programming Software Manual
39011 71122 01
Page 9 of 21
SW71122-Manual
Rev. 004
Aug/11
4.3 Send to IC - Button
After pressing the
Send to IC
button the registers R0 to R6 of the IC will be programmed with the data from
the actual state.
If the checkbox
Send always
is activated this operation is performed every time a control field is changed.
This can be used to simplify monitoring of single setting changes but it can produce unwanted intermediate
states if more than one setting has to be changed.
4.4 Tuning Info - Frame
The values of seven important frequencies are displayed in the tuning info frame:
•
f
RF
:
actual receive frequency
•
f
CH
:
channel step width
•
f
IF1
:
first intermediate frequency after the first mixer
•
f
IF2
:
second intermediate frequency after the second mixer
•
f
LO1
:
VCO output frequency or LO input frequency of first mixer
•
f
LO2
:
LO input frequency of second mixer (depends on f
LO1
)
•
f
PFD
:
working frequency of the phase-frequency detector of the PLL
All frequencies are given in MHz with three post decimal positions.
4.5 Program Status Line
The Status Line at the bottom of the program window displays three status values. The name of the actual
tab field is shown on the left hand side. The middle part displays the selected operation mode and the output
mode of the MFO pin separated by a vertical bar. On the right hand side is shown:
•
the actual LPT port address if LPT port is used
•
external reference voltage for SPI high logic level if USB-SPI converter is used and the ext. Vref
menu item is selected
•
internal reference voltage for SPI high logic level if USB-SPI converter is used and Set Vpwm
menu item is selected.
