MOD5272 CPU clock speed clarification
Posted: Wed Oct 03, 2018 7:33 am
Hi All,
Just wondering if anyone can clarify the CPU clock frequency on the MOD5272 board.
In the bsp.cpp file, there is a CPU_CLOCK variable defined as
also in the bsp.cpp file, the OS timer is setup as follows:
Based on this, it looks like the OS thinks the CPU clock is 781250 * 5 * 16 = 62500000
And in the MOD5272 data sheet, it lists the clock speed as 62 MHz.
Does anyone know which one is correct? I'm fairly certain that it's either 62 MHz or 62.5 MHz.
Cheers,
Keith
Just wondering if anyone can clarify the CPU clock frequency on the MOD5272 board.
In the bsp.cpp file, there is a CPU_CLOCK variable defined as
Code: Select all
const unsigned long CPU_CLOCK = 66355200Code: Select all
sim.timer1.tmr = ( sim.timer1.tmr & 0x00FF ) | 0x0400; // Set prescale to 1/5
...
sim.timer1.trr = ( WORD ) ( 781250L / TICKS_PER_SECOND ); //Set refernce count to give the proper Timer tick interval
...
sim.timer1.tmr = ( sim.timer1.tmr & 0xFFF9 ) | 0x0004; // Set Master_Clk/16 and startAnd in the MOD5272 data sheet, it lists the clock speed as 62 MHz.
Does anyone know which one is correct? I'm fairly certain that it's either 62 MHz or 62.5 MHz.
Cheers,
Keith