msm9810 Oki Semiconductor, msm9810 Datasheet - Page 5

• Manufacturer Part Number: msm9810
• Description: 8-channel Mixing Oki Adpcm Type Voice Synthesis Lsi
• Manufacturer: Oki Semiconductor

¡ Semiconductor
7, 48
1, 32
Pin
25
24
23
22
21
11
12
29
19
10
13
4
5
9
3
6
2
NCR/BUSY
Symbol
D3/SR3
D2/SR2
D1/SR1
D0/SR0
D4/UD
RESET
TEST1
TEST2
TEST3
TEST4
DGND
AGND
RDA0
LDA0
DV
AV
XT
XT
DD
DD
Type
I/O
I/O
—
—
O
O
O
I
I
I
I
I
Data bus pin for CPU interface when parallel input interface is selected.
When WR is "L", this pin serves as data input pin.
When RD is "L", this pin serves as channel status output pin.
When serial input interface is selected, this pin serves as channel status
selecter pin.
When UD is "H", channels 8 thru 5 are output to SR3 thru SR0, respectively.
When UD is "L", channels 4 thru 1 are output to SR3 thru SR0, respectively.
Data bus pin for CPU interface when parallel input interface is selected.
When WR is "L", this pin serves as data input pin.
When RD is "L", this pin serves as channel status output pin.
When serial input interface is selected, this pin serves as channel status
output pin.
When UD is "H", channels 8 thru 5 are output to SR3 thru SR0, respectively.
When UD is "L", channels 4 thru 1 are output to SR3 thru SR0, respectively.
LEFT side D/A output pin.
RIGHT side D/A output pin.
Crystal or ceramic oscillator connection pin.
A feedback resistor of about 1MW is connected between XT and XT.
If necessary, enter external clocks into this pin.
Crystal or ceramic oscillator connection pin.
When external clocks are used, leave this pin open.
When this pin is "L" level, the LSI is initialized. At that time, oscillation
stopsand D/A outputs go to GND level.
Channel status select pin.
When this pin is "H", NCR signal is output. When it is "L", BUSY signal is
output.
Pins for IC testing. Apply "L" level to these pins.
Pull-down resistors are internally connected to these pins.
Pins for IC testing. Apply "L" level to these pins.
Power supply pin.
GND pin.
Description
MSM9810
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