Other Parts Discussed in Thread: TMS320F28035
Hi,
I'm using TMS320F28035 controller.
In the CLA guide --- 'spruge6b', page 83, there is an example showing how to convert IQ format data to floating data in CLA using instruction " MI32TOF32 MRa, mem32 "
It uses IQ24 as example.
What I don' t quite get is the following code:
MMPYF32 MR0, MR0, #0X3380 ; M = 1/ (1*2^24) * iqm = 1.5 ( 0X3FC00000)
I think it is trying to get the original value which is 1.5 by multiplying 1/(2^24), but it is multiplied by #0x3380 ?
Is #0x3380 equivalent to 1/(2^24) ?
And, later when it convers the result from floating back to IQ24, it times #0X4B80, which is equivalent to Multiplying 2^24 ?
What if I want to use another IQ format, i.e IQ18 ?
Could someone help me understand this ?
Thank you.
