hi, I am a new guy with ADI dsp. I am using the 1940, and the board is EVAL-AD1940AZ.
I just design a simple project, to control the volume.
I just don't know the data format of the "Single Volume Control".
When I adjust the slew, the capture window will show the data, the "data" filed is 5 bytes (HEX).
When I make it to +20dB, the data is: 0x00, 0x85, 0x00, 0x000x00
when 0 dB, the data is : 0x00, 0x80, 0x80, 0x00, 0x00
when -80dB, the data is: 0x00, 0x80, 0x00, 0x03 ,0x47,
Why it should be so ?
I read the datasheet of 1940, the 0x00, 0x8x, i konw it , may be it is "Constant Time Ramp Data Write",
But the datafiled , I confused!
I know the format of 5.23, but the 2.14?? Above data right? Why it should like this?
The attach is the project file.