SNAS783C June 2020 – February 2021 LMX2820
PRODUCTION DATA
Double buffering—also known as "shadow registers"—allows the user to program multiple registers without having them actually take effect. Then when the R0 register is programmed, then these registers take effect. This is especially useful if one wants to change frequencies quickly and multiple register writes are required. When DBLBUF_EN = 1, the double buffering is enabled for the following registers: PLL_N, PLL_NUM, PLL_DEN, MULT, PLL_R, PLL_R_PRE, MASH_ORDER, and PFD_DLY.