ML2302 datasheet(6/24 Pages) OKI

6 / 24 page

FEDL2302DIGEST-05

OKI Semiconductor

ML2302

6/24

(WCSP)

(TQFP)

Symbol

Type

Description

SIOCK

I/O

16-bit serial data transfer clock when external A/D or D/A

converter is used.

VCK

I/O

Outputs sampling frequency selected. Input pin when slave

mode is selected.

Oscillator connection pins. when external clock is used, input

clock into XT pin and leave

XT pin open. Oscillation stops

during reset or power down mode. Figure (a) shows Oscillation

Equivalent Circuit.

RESET

When this pin is “L”, the LSI is initialized and AOUT is set to the

GND level.

FIFOST

When this pin is “L”, EMP, MID, and FULL of playback FIFO can

be monitored. When this pin is “H”, EMP, MID, and FULL of

record FIFO can be monitored.

Analog circuit signal ground pin. This pin is connected to GND

during reset or power down mode.

MIN

LIN

Inverting input pin for built-in OP amplifier. Non-inverting input

pin is connected to SG (Signal Ground).

MOUT

LOUT

MOUT is the output of internal OP amplifier to MIN, and LOUT

is to LIN.

AOUT

This is the output of the analog playback waveform.

VOXO

Voice level detection signal

H8, B2

49, 16

TEST0, 8

Pins for testing. Set the pins to “L”.

E3, G8

9, 46

DVDD

—

Digital power supply pin. Insert a minimum 0.1

µF bypass

capacitor between this pin and DGND pin

D7, G5

38, 57

DGND

—

Digital GND pin.

A2, B8

17, 33

AVDD

—

Analog power supply pin. Insert a minimum 0.1

µF bypass

capacitor between this pin and AGND pin.

C5, A8

23, 32

AGND

—

Analog GND pin.

C9, D8

CB1

CB2

This pin is used to connect a capacitor for voltage multiplier

power supply. Insert a 1

µF capacitor between CB1 and CB2.

SPVDD

Voltage multiplier power supply output pin for speaker amplifier.

Connect a 1

µF capacitor to this pin in order to stabilize the

speaker amplifier circuit.

Bias output pin for speaker amplifier. Set this pin to the GND

level during reset or power down mode.

SPIN

Voice signal input pin for speaker amplifier.

SPOUT–

Speaker amplifier output pin. This pin outputs a signal in

reverse phase to the signal that is input to the SPIN pin.

SPOUT+

Speaker amplifier output pin. This pin outputs a signal in phase

to the signal that is input to the SPIN pin.

D1, D2,

D3, C1,

C2, B1,

10~15

,24

TEST2 to

7, 9

Pins for testing. Leave these pins open.

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