Products Mentioned

AD9106 Production
The AD9106 TxDAC® and waveform generator is a high performance, quad digital-to-analog converter (DAC) integrating on-chip pattern memory for complex waveform...
Datasheet
AD9106 on Analog.com

AD9106 SRAM read/write

tzs0023

on Feb 7, 2015

I'm trying to load wave data points into the SRAM. I can set the shadow registers, ram_update, and read back the values that were entered. I cannot seem to load values into the SRAM.

I'm updating the PAT_STATUS reg to allow write according to pg27 of Rev. A of the datasheet and perform the ram_update. I "attempt" to write the data to the SRAM addresses. I set PAT_STATUS reg to allow read and perform the ram_update. When reading the SRAM addresses they all return 00. The CS pin is toggled appropriately between commands.

Is there something else that I've missed in the datasheet?

Parents

0 tzs0023
on Feb 10, 2015 7:33 PM
So, apparently the reserved bits in SRAM are actually [3:0] not [15:12]. That's a pretty big mistake in the datasheet. I'm getting values written to and read from the SRAM now but only if I address each data value first. It doesn't work if I just try and write/read sequentially with one command and holding the CS line low for the sequential data.
Cancel
Up 0 Down

Reply

Verify Answer

Cancel

Reply

0 tzs0023
on Feb 10, 2015 7:33 PM
So, apparently the reserved bits in SRAM are actually [3:0] not [15:12]. That's a pretty big mistake in the datasheet. I'm getting values written to and read from the SRAM now but only if I address each data value first. It doesn't work if I just try and write/read sequentially with one command and holding the CS line low for the sequential data.
Cancel
Up 0 Down

Reply

Verify Answer

Cancel

Children

No Data