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Re: working with AD-FMCOMMS1 at low sampling rate

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Lars,

 

Sorry. That was a midnight flub. I should have paid attention to address 0x8000000 (ADC memory). Anyways, here is the register records on DAC DMA, for fs = 491.52MSPS:

AXI_DMAC_REG_CTRL: 1

AXI_DMAC_REG_TRANSFER_ID: 1

AXI_DMAC_REG_START_TRANSFER: 1

AXI_DMAC_REG_DEST_ADDRESS: 0

AXI_DMAC_REG_SRC_ADDRESS: E000000

AXI_DMAC_REG_X_LENGTH: EFFFF

AXI_DMAC_REG_TRANSFER_DONE: 0

AXI_DMAC_REG_ACTIVE_TRANSFER_ID: 0

AXI_DMAC_REG_STATUS: 0

AXI_DMAC_REG_CURRENT_DEST_ADDR: 0

AXI_DMAC_REG_CURRENT_SRC_ADDR: E01B400

AXI_DMAC_REG_DBG0: 22113302

AXI_DMAC_REG_DBG1: F0

 

while for fs = 245.76 MSPS is:

AXI_DMAC_REG_CTRL: 1

AXI_DMAC_REG_TRANSFER_ID: 3

AXI_DMAC_REG_START_TRANSFER: 1

AXI_DMAC_REG_DEST_ADDRESS: 0

AXI_DMAC_REG_SRC_ADDRESS: E000000

AXI_DMAC_REG_X_LENGTH: EFFFF

AXI_DMAC_REG_TRANSFER_DONE: 0

AXI_DMAC_REG_ACTIVE_TRANSFER_ID: 0

AXI_DMAC_REG_STATUS: 0

AXI_DMAC_REG_CURRENT_DEST_ADDR: 0

AXI_DMAC_REG_CURRENT_SRC_ADDR: E051A80

AXI_DMAC_REG_DBG0: 33665503

AXI_DMAC_REG_DBG1: F0

 

Please let me know if it means something to you.

In the meanwhile, I'm trying to rebuild the project with 128bit on source side as you suggested (256 / 512 will work as well? but over-designs?) Will let you know.

 

Best Regards,

FArid


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