Where will I find its user doc ? is this it
http://www.analog.com/static/imported-files/overviews/FMC-Communications_Product_Highlight.pdf
However i got following code in test.c
/**************************************************************************//**
* @brief Initializes the DAC DMA.
*
* @return None.
******************************************************************************/
void dac_dma_setup(uint32_t sel)
{
uint32_t baddr;
uint32_t index;
uint32_t tx_count;
uint32_t index_i;
uint32_t index_q;
uint32_t data_i;
uint32_t data_q;
uint32_t dac_clk;
uint32_t val;
uint32_t sine_freq;
dac_base_addr = ((sel == IICSEL_B1HPC_AXI)||(sel == IICSEL_B1HPC_PS7)) ?
CFAD9122_1_BASEADDR : CFAD9122_0_BASEADDR;
tx_count = sizeof(sine_lut) / sizeof(uint16_t);
for(index = 0; index < tx_count; index ++)
{
index_i = index;
index_q = index + (tx_count / 4);
if(index_q >= tx_count)
index_q -= tx_count;
data_i = (sine_lut[index_i] << 16);
data_q = (sine_lut[index_q] << 0);
Xil_Out32(DDRDAC_BASEADDR + index * 4, data_i | data_q);
}
#ifdef _XPARAMETERS_PS_H_
Xil_DCacheFlush();
#else
microblaze_flush_dcache();
microblaze_invalidate_dcache();
#endif
baddr = ((sel == IICSEL_B1HPC_AXI)||(sel == IICSEL_B1HPC_PS7)) ? DMA9122_1_BASEADDR : DMA9122_0_BASEADDR;
Xil_Out32(baddr + AXI_DMAC_REG_CTRL, AXI_DMAC_CTRL_ENABLE);
Xil_Out32(baddr + AXI_DMAC_REG_SRC_ADDRESS, DDRDAC_BASEADDR);
Xil_Out32(baddr + AXI_DMAC_REG_SRC_STRIDE, 0);
Xil_Out32(baddr + AXI_DMAC_REG_X_LENGTH, (tx_count * 4) - 1);
Xil_Out32(baddr + AXI_DMAC_REG_Y_LENGTH, 0x0);
Xil_Out32(baddr + AXI_DMAC_REG_START_TRANSFER, 0x1);
dac_read(ADI_REG_CLK_FREQ, &val);
dac_clk = val;
dac_read(ADI_REG_CLK_RATIO, &val);
dac_clk *= val * 100000000 / 65536;
sine_freq = dac_clk / (tx_count * 2);
xil_printf("dac_dma: Sine frequency is %d Hz.\n\r", sine_freq);
dac_write(ADI_REG_CNTRL_2, ADI_DATA_FORMAT | ADI_DATA_SEL(DATA_SEL_DMA));
dac_write(ADI_REG_CNTRL_1, 0x0);
dac_write(ADI_REG_CNTRL_1, 0x1);
}
how to stop this code from running?