Forums DSP/DSC Boards TMS320C6745 To Calculate Machine Cycle

To Calculate Machine Cycle

Link to this post 02 Dec 14

Hi sir how do i calculate machine cycle for my TMS320C6745

Link to this post 04 Dec 14

Arun Kumar R,

Its depend upon the crystal value you are using and the PLL configuration.
For Example :
Assume this following board

Crystal Used : 24Mhz
PLL configured for : 300Mhz

PRE_DIV is set to divide by 1
PLLM is set to 24. Multiplier Value = PLLM + 1., i.e, multiply by 25
POST_DIV is set to 1. Divider Value = RATIO + 1. post-divide by 2

note: Refer attached PLL functional block diagram to apply above calculation.

Machine cycle = 1/sysclk
= 1/300000000
= 3.33333333ns

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Link to this post 04 Dec 14

Thanks for your solution sir