SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Table 28-55 lists the DPLL_PCIE_REF setup registers in PRCM recommended values.
Field Name | Value | Description |
---|---|---|
CM_CLKSEL_DPLL_PCIE_REF[7:0] DPLL_DIV | See Table 28-53 | Sets dvider N, input clock divider factor (0 to 255) (actual division factor is N+1) |
CM_CLKSEL_DPLL_PCIE_REF[21] DPLL_SELFREQDCO | See Table 28-53 | Sets DCO frequency range |
CM_CLKSEL_DPLL_PCIE_REF[19:8] DPLL_MULT | See Table 28-53 | Sets multiplier M, multiplier factor (2 to 4095) |
CM_DIV_M2_DPLL_PCIE_REF[6:0] DIVHS | See Table 28-53 | Sets divider M2, output clock post-divider factor (1 to 127) |
CM_CLKSEL_DPLL_PCIE_REF[31:24] DPLL_SD_DIV | See (1) | Sets Sigma-Delta divider SD, SD = CEILING([(M)/(N+1)] × CLKINP/250) |
CM_CLKSEL_DPLL_PCIE_REF[2:0] DPLL_EN | 0x7 | Enables the DPLL in Lock mode |
CM_IDLEST_DPLL_PCIE_REF[0] ST_DPLL_CLK | =1 | Poll this bit for DPLL lock status. Set by hardware. |