IsSpurInBand(9)

💖 IsSpurInBand(9) — Kernel API Manual 💖

🌸 NAME 🌸

IsSpurInBand — checks to see if a spur will be present within the IF’s bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW)

✨ SYNOPSIS ✨

       u32 IsSpurInBand (struct MT2063_AvoidSpursData_t *pAS_Info , u32 *fm ,
       u32 * fp );

🎀 ARGUMENTS 🎀

• pAS_Info — the Avoid Spurs information block. It’s the info bundle, bestie.
• fm — if there’s a spur, the amount f_IF1 has to move negative.
• fp — if there’s a spur, the amount f_IF1 has to move positive.

🦋 DESCRIPTION 🦋

Okay so picture the spur-checking sitch as a tiny diagram, because this is the layout energy:

       ma   mb                                     mc   md
       <--+-+-+-------------------+-------------------+-+-+--> |   ^
       0                   ^   | ^   b=-fIFOut+fIFBW/2      -b=+fIFOut-fIFBW/2
       ^ a=-fIFOut-fIFBW/2              -a=+fIFOut+fIFBW/2

And lowkey important: some equations are doubled to prevent round-off problems when calculating fIFBW/2. Not me being dramatic — that’s literally why.

Returns 1 if an LO spur would be present, otherwise 0. Periodt. 💅

💅 SEE ALSO 💅

• Kernel file ./drivers/media/tuners/mt2063.c
• mt2063_lockStatus(9)
• MT2063_fLO_FractionalTerm(9)
• MT2063_CalcLO2Mult(9)

okay bye bestie 💖 — this page is IsSpurInBand(9) from the Kernel API Manual, with source/version vibes from ./drivers/media/tuners, dated October 2026. Slay. ✨🎀