Adpcm Speech - Casio QT-6000 Service Manual

8-13. ADPCM SPEECH LSI (IC15: MSM9841)
8-13-1. Pin Assignment
D0 1
D1 2
D2 3
D3 4
NC 5
D4 6
D5 7
D6 8
D7 9
NC 10
D8 11
D9 12
D10 13
D11 14
8-13-2. Block Diagram
A
15 to 0
A
t
o t t
A
A 2 A
A a yz
A 2 A
y th z
A
A
— 74 —
42 BUSY
41 D/C
40 CS
39 RD
38 WR
37 FUL/DREQR
36 MID
35 EMP
34 CH/DACKR
33 RESET
32 NC
31 DV
DD
30 AV
DD
29 AOUTR
o t t
A A
o o t o
o - a
o t o
A
A
A
A
A
0
1