AnsweredAssumed Answered

Cannot enable the caches on MPC8260A

Question asked by Eugene Todoruk on Sep 30, 2013
Latest reply on Oct 6, 2013 by alexander.yakovlev

Hello everybody,


I work with a specific board at the following frequencies:


MPC8260 Clock Configuration

- Bus-to-Core Mult 3x, VCO Div 2, 60x Bus Freq  33-100, Core Freq 100-300

- dfbrg 0, corecnf 0x08, busdf 3, cpmdf 1, plldf 0, pllmf 1, pcidf 3

- vco_out  133332000, scc_clk   33333000, brg_clk   33333000

- cpu_clk   99999000, cpm_clk   66666000, bus_clk   33333000


CPU:   MPC8260 (HiP4 Rev 14, Mask B.1 4K25A) at 99.999 MHz


Quote from the MPC8260AEC:

"The user should choose the input clock frequency and the multiplication factors such that the frequency of the CPU is equal to or greater than 150 MHz and the CPM ranges between 66–233 MHz."


Is it possible that my CPU's low frequency has somehow caused problems with caches?