M5205
From Computer History Wiki
The M5205 is a speech synthesis chip created by OKI Data, used in several video games, notably the TurboGrafx CD / TurboDuo.
+---+--+---+
S1 |1 +--+ 18| Vdd
S2 |2 17| /XT
4B / /3B |3 16| XT
D0 |4 15| RESET
D1 |5 M5205 14| /VCK
D2 |6 13| T2
D3 |7 12| T1
NC |8 11| NC
Vss |9 10| DAout
+----------+