This article on forensicfocus.com says the following about Deterministic Read After TRIM (emphasis mine):
As a result, the data returned by SSD drives supporting DRAT as opposed to DZAT can be all zeroes or other words of data, or it could be the original pre-trim data stored in that logical page.
The sentence makes it sound like trimmed data could be recovered on some SSDs by simply asking the SSD controller for it.
hdparm tells me that my SSD (SanDisk SSD PLUS 1000GB) has DRAT enabled:
Data Set Management TRIM supported (limit 8 blocks)
Deterministic read data after TRIM
I'd like to find out which word the SSD deterministically returns for trimmed data.