MSM9810B View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

MSM9810B

8-Channel Mixing OKI ADPCM Type Voice Synthesis LSI

Oki Electric Industry 

OKI Semiconductor

FEDL9810BFULL-03

MSM9810B

Pin

25

24

23

22

21

4

5

11

12

29

19

9

10

13

3

6

7, 48

2

1, 32

Symbol

D4/UD

D3/SR3

D2/SR2

D1/SR1

D0/SR0

LDAO

RDAO

XT

XT

RESET

NCR/BUSY

TEST1

TEST2

TEST3

TEST4

AVDD

DVDD

AGND

DGND

Type

I/O

I/O

O

O

I

O

I

I

I

—

—

—

—

Description

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

select 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 analog output pin.

RIGHT side analog output pin.

Crystal or ceramic oscillator connection pin.

A feedback resistor of about 1MΩ is connected between XT and XT.

When external clocks are used, 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. A pull-up resistor is internally

connected to this pin.

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.

Analog power supply pin. A bypass capacitor of 01 µF or more should

be connected between the AGND pin and the AVDD pin.

Digital power supply pin. A bypass capacitor of 0.1 µF or more should be

connected between the DGND pin and the DVDD pin.

Analog GND pin.

Digital GND pin.

5/45

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