SPRUJ53D April 2024 – April 2026 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
One of INTOSC2, XTAL, or INTOSC1 must be chosen to be the reference clock (OSCCLK) for the CPU and most of the peripherals. OSCCLK can be used directly or applied through the system PLL to reach a higher frequency. At reset, OSCCLK is the default system clock, and is connected to INTOSC2.