[TDA4M] Linear addressing and Circular addressing in FMTFLAG of TR

Hi Yongsig,

This code is fixed, but you could change most of the parameters. 

Are you looking for any other way to do copy? Could you please help us to understand your requirement?

Rgds,

Brijesh

Hello. Brijesh.

First of all, thank you for your reply.

You said that I could change most of the paraeters. Do those parameters mean ICNTx, SDIMx and DDIMX ?

Actually, I don't know exactly when the linear addressing like TI's(*) would be needed.

I was wondering If I have to use this addressing when the DMA would read/write from/to continueous address incremented by 1 on block copy mode.

In other words, In 4D block copy(TR Type is 8 or 9), I can configure those parameters to access address incremented by 1, but I think those loop of ICNx are too complex for that works.

It would be helpful for me if you could explain some advantages of linear and circular addressing in 4D block copy.

Best regards

Yongsig.

(*) TI's linear addressing is follows :

for (i3 = 0; i3 < ICNT3; i3++)
{
sptr3 = sptr; // save current position before entering next level
dptr3 = dptr; // save current position before entering next level
// Check for trigger of TYPE1
if (TR_TRIG0_TYPE == TYPE1) while(!TR_TRIG0);
If (TR_TRIG1_TYPE == TYPE1) while(!TR_TRIG1);
for (i2 = 0; i2 < ICNT2; i2++) {
sptr2 = sptr; // save current position before entering next level
dptr2 = dptr; // save current position before entering next level
// Check for trigger of TYPE2
if (TR_TRIG0_TYPE == TYPE2) while(!TR_TRIG0);
if (TR_TRIG1_TYPE == TYPE2) while(!TR_TRIG1);
for (i1 = 0; i1 < ICNT1; i1++) {
sptr1 = sptr; // save current position before entering next level
dptr1 = dptr; // save current position before entering next level
// Check for trigger of TYPE3
if(TR_TRIG0_TYPE == TYPE3) while(!TR_TRIG0);
if(TR_TRIG1_TYPE == TYPE3) while(!TR_TRIG1);
for (i0 = 0; i0 < ICNT0; i0++) {
// UTC can combine these in optimized burst aligned accesses.
*dptr = *sptr;
sptr = sptr++;
dptr = dptr++;
}
// Update based on saved pointer for this level
sptr = sptr1 + SDIM1;
dptr = dptr1 + DDIM1;
}
// Update based on saved pointer for this level
sptr = sptr2 + SDIM2;
dptr = dptr1 + DDIM2;
}
// Update based on saved pointer for this level
sptr = sptr3 + SDIM3;
dptr = dptr1 + DDIM3;
}