PCE DDA click when turning off

Anyways, I’m wondering if you know how to get the DDA to turn off without exhibiting a popping click. Thanks

 I am playing the top 5 bits of an 8-bit unsigned PCM sample thru the PCE — this means the sample data for 0 or no sound is “$10” — and the sample plays fine — and when it finishes playing the sample it is silent - but when I turn off the DDA a popping sound occurs — I noticed that if the DDA is turned off with the last sample written as 0, then there is no pop (of course I get a pop by writing 0 itself though).

I tried instead to fade the channel volume out, but that also has audibles (even at reduced fade rates)..

I also tried decrementing steadily from $10 to 0 but that also has audibles.