MSM6789 datasheet(6/53 Pages) OKI

6 / 53 page

MSM6789A/6789L

¡ Semiconductor

PIN DESCRIPTIONS (for MSM6789A (5 V Version))

Symbol

Type

Description

DVDD

—

Digital power supply. Insert a bypass capacitor of 0.1

mF or more between this

pin and the DGND pin.

AVDD

—

Analog power supply. Insert a bypass capacitor of 0.1

mF or more between this

pin and the AGND pin.

DGND

—

Digital ground.

AGND

—

Analog ground.

SG, SGC

—

Output for analog circuit reference voltage (signal ground).

MIN

Inverting input of the built-in OP amplifier. The non-inverting input pin is

internally connected to SG (signal ground).

LIN

MOUT

Output of the built-in OP amplifier for MIN and LIN.

LOUT

AMON

Connected to the LOUT pin in the recording mode and to the DA converter

output in the playback mode. This pin connects the built-in LPF input (FIN pin).

FIN

FOUT

Output of the built-in LPF. This pin connects the AD converter input (ADIN pin).

ADIN

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

AOUT

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

an external speaker drive amplifier.

This pin selects whether memory to be connected externally is DRAM or serial register.

DRAM/SR

Low level

High level

This pin selects either 1-bit

¥ type DRAM or 4-bit ¥ type DRAM.

4B/1B

A0 (SADY)

These pins connect to A0 and A1 of DRAM at the time of DRAM selection. They also

connect to SAD pin of serial register and serial voice ROM at the time of serial

A1 (SADX)

This pin connects to A2 of DRAM at the time of DRAM selection. It also connects

to TAS pin of serial register and serial voice ROM at the time of serial register selection.

This pin is used to set serial addresses from the SADX and SADY pins into the

internal address counter of the serial register and serial voice ROM.

A2 (TAS)O

This pin connects to A3 of DRAM at the time of DRAM selection. It also connects

to the SAS pin of the serial register and the SASX and SASY pins of the serial voice

ROM at the time of serial register selection. Clock pin to write serial addresses.

A3 (SAS)O

This pin connects to A4 of DRAM at the time of DRAM selection. It also connects

to the RWCK pin of the serial register and the RDCK pin of the serial voice ROM at

the time of serial register selection. Clock pin to read data from and write data into

the serial register.

A4 (RWCK)O

Input of the built-in LPF.

: Serial register

: DRAM

Low level

High level

: 1-bit

¥ type

: 4-bit

¥ type

A10-A5

This pin connects to pins A5-A10 of DRAM at the time of DRAM selection.

This pin outputs addresses of read/write.

40, 55

48, 49

1-6

MSM6789 Datasheet(PDF) 6 Page - OKI electronic componets

MSM6789 Datasheet(HTML) 6 Page - OKI electronic componets

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

Datasheet Download

Link URL