msm9811 Oki Semiconductor, msm9811 Datasheet - Page 5

• Manufacturer Part Number: msm9811
• Description: 4-channel Mixing Oki Adpcm Type Voice Synthesis Lsi
• Manufacturer: Oki Semiconductor

OKI 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
D3/SR3
D2/SR2
D1/SR1
D0/SR0
Symbol
RESET
TEST1
TEST2
TEST3
TEST4
D4/UD
RDAO
DGND
AGND
LDAO
DV
AV
XT
XT
DD
DD
Type
I/O
I/O
—
—
—
—
O
O
O
I
I
I
I
Data bus pin for CPU interface when parallel 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, fix this pin at GND level.
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.
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 1MΩ 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
stops and 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 LSI testing. Apply “L” level to these pins.
Digital power supply pin. A bypass capacitor of 0.1 µF or more should
be connected between the DGND pin and the DV
Analog power supply pin. A bypass capacitor of 0.1 µF or more should
be connected between the AGND pin and the AV
Digital GND pin.
Analog GND pin.
Description
DD
DD
pin.
pin.
FEDL9811FULL-04
MSM9811
5/44