UM1657 datasheet(29/48 Pages) STMICROELECTRONICS

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UM1657

SPIRIT1 DK - GUI description

3.2.2

Supply voltage panel (supported only in STEVAL-IKR001Vx - RF

motherboard)

At the top right of the main window, the user can read supply voltage of the SPIRIT1 DK -

DB. This voltage can be also read by the pin VCCRF on the SPIRIT1 DK - MB.

Figure 17. Supply voltage display

This function is available only for STEVAL-IKR001Vx - RF motherboard.

3.2.3

Radio setting panel

The "Radio setting" panel is always shown informing the user about:



Frequency base.



Modulation.



XTAL frequency.



Data rate.



Frequency deviation.



Channel filter.



Output power.

These entire fields can be changed according to these limits (the values may slightly change

according to the XTAL frequency):

 Frequency base

–

Low band: [150 - 174] MHz.

–

Middle band I: [300 - 348] MHz.

–

Middle band II: [387 - 470] MHz.

–

High band: [799 - 956] MHz.



Modulation:

–2-FSK.

–

GFSK BT 0.5.

–

GFSK BT 1.

–

MSK.

–

GMSK.

–

ASK.

–

OOK.



Data rate in the interval: [99 - 500000] bps.



Frequency deviation in the interval: [793 - 761718] Hz.



Channel filter in the interval: [1100 - 800100] Hz.



Output power in the interval: [-30.0 13.0] dBm or [-3.0 +30.0] dBm if PA EXT is

checked.



XTAL frequency is the value of the frequency of the crystal in the SPIRIT1 DK - DB, the

value must be in the range: [24 26] MHz and [48 52] MHz. If the AUTO check box is

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