On blackfin Asynchronous memory interface

Hi,
I am using Blackfin BF534 for my application...
I am using asynchronous memory intrface pins to transfer
data to the peripheral device like DAC,LCD...
Questions:
1. Can I Use memory DMA for transferring the data through the Asynchronous memory interface...For example, I want to transfer the single data(16 bit) to LCD....Can I use Memory DMA(MDMA) for the transfer........
2. Can I use the asynchronous memory interface pins for both LCD and DAC
3.Can I Control the rate of data transfer using asynchronous memory interface....
4.Are there any other options by which I can transfer data through asynchronous memory inetrface pins.....
5.The blackfin hardware manual BF534(BF537) :-----It just describes the timing diagram, rather it does not suggest from where does the data come(data source location).....I mean to say, How can I define the data source location(address) and dat destination address
6. Suggest me sample code for asynchronous memory data transfers.....
Kind Regards,
Nithin Start a New Thread

Hi

Ive a problem with enabling SIMD on ADSP 21363 ( VDSP++ 5.0, no update).

Im trying to compute a very simple fir filter and when compare result in C
and in ASM there is a problem:

Fir Filter written in C:

for (i=0; i
{

yn = yn + w[i] * x[N-1-i];

}

In ASM when written in SISD mode, results are identical but when enabling
SIMD mode, result are different sometimes. Is there somebody who has
encountered same problems?

Thanks in advance Start a New Thread

Hi all



I need to implement fir filter but I want to compute output value each time
a new sample (input) is available. In C language my routine is :



for (i=0; i
{

yn = yn + w[i] * x[N-1-i];

}



New inputs are store in X[n] using modulo :

X[(index++)%N]=x_new;



I want to optimize performance and enable SIMD, but I dont know how to
proceed. I find fir_vec routine in ASM but I va a problem with parameter
passing :

float *fir_vec( const float input[],

float output[],

const float pm coefficients[],

float state[],

int samples,

int taps );



Is there anybody who used it, do you have a small code example in order for
me to understand. Fir computation is done each new sample.

So any suggestions will be appreciated. Start a New Thread