55 0x5e, 0x5f— pll frequency register (pll_f, 56 0x70—lec read tap select register (linear, 57 0x71—lec write tap select register (linea – Rockwell SoniCrafter BT8960 User Manual
Page 77: 58 0x72—nec read tap select register (nonlin, 55 0x5e, 0x5f— pll frequency register, Pll_frequency_low, pll_frequency_high), Bt8960
