MSM6688 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM6688

ADPCM Solid-State Recorder IC

Oki Electric Industry 

¡ Semiconductor

MSM6688/6688L

PIN DESCRIPTIONS

Pin

Symbol

49

DVDD

21

DVDD'

22

AVDD

30

DGND

29

AGND

23

SG

24

SGC

28

MIN

26

LIN

27

MOUT

25

LOUT

20

AMON

19

FIN

17

FOUT

16

ADIN

18

AOUT

39

SADX

38

SADY

36

SAS

37

TAS

50

RWCK

46

WE

Type

—

—

—

—

—

Description

Digital power supply pin. Insert a bypass capacitor of 0.1µF or more

between this pin and the DGND pin.

Digital power supply pin

Analog power supply pin. Insert a bypass capacitor of 0.1µF or more

between this pin and the AGND pin.

Digital ground pin

Analog ground pin

O Output pin for analog circuit reference voltage (signal ground)

Inverting input pin of the built-in OP amplifier. Non-inverting input

I

pin is internally connected to SG (signal ground).

MOUT and LOUT are output pins of the built-in OP amplifier for MIN

O

and LIN, respectively.

This pin is connected to the LOUT pin in the recording mode and to

O the DA converter output in the playback mode. Used to connect the

built-in LPF input (FIN pin).

I Input pin of the built-in LPF.

Output pin of the built-in LPF. Used to connect the AD converter

O

input (ADIN pin).

I Input pin of the built-in 12-bit AD converter.

Output pin of the built-in LPF. This pin outputs playback waveforms

O

and used to connect an external speaker drive amplifier.

(Serial Address Data). SADX is used to connect the SAD pin of each

external serial register and the SADX pin of each external serial voice

O

ROM. SADY is used to connect the SADY pin of each external serial

voice ROM. Outputs of starting address of read/write.

(Serial Address Strobe). Used to connect the SAS pin of external

O serial register and the SASX and SASY pins of

external serial voice ROM. Clock pin to write the serial address.

(Transfer Address Strobe). Used to connect the TAS pin of each

external serial register and serial voice ROM.

O This pin outputs address strobe outputs to set the serial address

data from the SADX and SADY pins into the internal address counter

of each serial register and serial voice ROM.

(Read/Write Clock). Used to connect the RWCK pin of each external

serial register and the RDCK pin of each external

O

serial voice ROM. This pin outputs a clock to read data from or write

it into each external serial register.

(Write Enable) Used to connect the WE pin of each external

O serial register. This pin outputs WE signal to

select either read or write mode.

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