Error in DMA controller 3.

Hello, I am using TMS320C5515 EVM and developing under CCSv4. I am using a program to play audio through DMA.

I want to play audio thorough I2S1, so I configured DMA controller 3 channel 0 and channel 0 to play in stereo mode, and after that it should begin to play audio when I execute this instruction:

void

start_dma3_ch0_i2s1()

{

unsignedshort temp;

temp = DMA3CH0TCR2;

temp |= 0x8000;

DMA3CH0TCR2 = temp;

}

void

start_dma3_ch1_i2s1()

{

unsignedshort temp;

temp = DMA3CH1TCR2;

temp |= 0x8000;

DMA3CH1TCR2 = temp;

}

However, when I debug this and I am in the first line of any of these instruction, I got this:

C55xx: Can't Single Step Target Program: Error 0x20000022/-2130 Severe Error during: Memory, Execution, Cannot access memory address at 0x00000800

I don't know what may be wrong. When I do the same under I2S2 there isn't any problem.

Thank you,

Albert Torné