Hi all；
I'm having difficulty setting up the AD9102 to output random waveform from the SRAM (it does not work at all!, And we have already generator SIN_WAVE and SAW_WAVE). Here are several question during datasheet;
1.About Start_ADDR & Stop_ADDR in generator random waveform;
As we known, the ADDR of SRAM is 16bit(0x6000~0x6fff) but Start_ADDR with only 12-bit available,so does it means Start_ADDR occupy 12LSB of the SRAM ADDR;(i've gotten that the DAC_output occupy 12MSB of SRAM_ADDR);
2. Here are the C code from the AD9102: help with /TRIGGER programming
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60001000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60010000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60022000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60030000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60043000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60050000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60064000);
SPIbusSet(SPIBUS_DEV_AOM_DAC,0x60070000);
what surprising me most is how can it generator random waveform! From date sheet, we were known[15:12]is reserved!!
3.Is there any different in Configuring the some basic SFR (like SPI_configure) between the generator SIN_WAV and random waveform .
4. Our MCU is the basic 8051(TTL-level instead of 3.3V). We wonder it will bring any side_effect to ad9102?
I find the documentation very confusing, so thanks for any input you might have on this.
Thanks!
Mayer