Initial Instructions
MC13853 LNA Evaluation Board User’s Guide, Rev. 1.3
1-6
Freescale Semiconductor
6. The truth table is:
a) Active mode: enable 1, gain 1.
b) Bypass mode: enable 0, gain 0.
c) Disable mode: enable 0, gain 1.
7. To select the current setting, select “current =” on the SPI Var list window and one of the eight
current settings in the middle window.
8. To control the external LNA MC13851, select “LNA Selector” in the SPI Var List window and
“GPO” in the middle window. Set the enable and gain.
9. Auto Send SPI:
a) If “On”, SPI command sent whenever a SPI value changes.
b) If “Off”, use “Send SPI” (F1) to send.
10. Send SPI (F1): Command is sent whenever pressed.
11. Write to DUT button:
a) Activates either condition.
b) Data can be sent to (write) or read from the device.
c) If write is shown, the SPI is writing.
12. View Waveform:
a) Activates view of data sent in waveform format.
13. Command History:
a) Displays the data sent (written) or received (read) from the device.
b) Choice of hex or binary format.
