SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
There are two PLLs (SYSPLL and AUXPLL) and equations shown in Figure 3-10 must be used to configure the respective PLL.
IMULT is the integer value of the multiplier.
REFDIV is the reference divider for the OSCCLK/AUXOSCCLK.
ODIV is the output divider of the PLLRAWCLK/AUXPLLRAWCLK.
PLLSYSCLKDIV is the system clock divider.
AUXPLLDIV is the auxiliary clock divider.
For the permissible values of the multipliers and dividers, see the documentation for the respective registers.
Many combinations of multiplier and divider can produce the same output frequency. However, the product of the reference clock frequency and the multiplier (known as the VCO frequency) must be in the range specified in the TMS320F2838x Real-Time Microcontrollers With Connectivity Manager Data Sheet .
The clock source and PLL configuration registers are shared between the two CPUs (CPU1 and CPU2). Register access is controlled by way of a semaphore, which is described in Chapter 16.