Casio QT-6000 - Adpcm Speech

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8-13. ADPCM SPEECH LSI (IC15: MSM9841)
8-13-1. Pin Assignment
MOUT LOUT AOUTL AOUTR
MIN
EMP
MID
FUL/DREQR
CH/DACKR
D15 to D0
WR
RD
CS
D/C
BUSY
FIFO
MCU
I/F
ADSD
DASD
SIOCK
TEST0
TEST1
DREQL DACKL IOW IOR
VCK XT XT RESET
input side
LPF
Volume Controller
ADPCM2/ADPCM/PCM/Non-linear PCM
Synthesizer
DMA I/F
Timing Controller
External
DAC/ ADC I/F
LIN
ADC
output side
LPF
DAC DAC
SG
AV
DD
AGND
DV
DD
DGND
ADPCM2/ADPCM/PCM
Analyzer
output side
LPF
8-13-2. Block Diagram
D0
D1
D2
D3
NC
D4
D5
D6
D7
NC
D8
D9
D10
D11
BUSY
D/C
CS
RD
WR
FUL/DREQR
MID
EMP
CH/DACKR
RESET
NC
DV
DD
AV DD
AOUTR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NC XT XT IOR IOW DREQL DACKL DGND TEST1 TEST0 VCK ADSD DASD SIOCK
56 55 54 53 52 51 50 49 48 47 46 45 44 43
NC
D12 D13 D14 D15
NC
DGND
AGND
MIN
MOUT
LIN
LOUT
SG
AOUTL
15 16 17 18 19 20 21 22 23 24 25 26 27 28
42
41
40
39
38
37
36
35
34
33
32
31
30
29