The only RCA CD I found data on is the RCA CD 9500. It uses a common set of Pioneer CD signals matching:
The Theta digital CD in this CCF [Link: remotecentral.com]

Some unidentified CD in this CCF
[Link: remotecentral.com]

The Pioneer CD Player Elite PD-F79 in this CCF
[Link: remotecentral.com]

and several others.

If some of those commands work, you could also use MakeHex and IrPanels to construct a CCF with the full set of 256 commands for Pioneer protocol, device 162 and see what each does.