EM73982 View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

MFG CO.

EM73982

4-BIT MICROCONTROLLER

ELAN Microelectronics 

Prev 21 22 23 24 25 26 27 28 29 30 Next

EM73982

4-BIT MICROCONTROLLER

Volume control register

The are 8 levels of volume for sound generator. P17 is the volume control register.

Port17

Initial value : * 1111

32 1 0

*

VCR

VCR

ts/tp

1 11

8/8

ts

1 10

7/8

1 01

6/7

1 00

5/8

0 11

4/8

tp

0 10

3/8

0 01

2/8

1

tp= 60KHz

0 00

1/8

PROGRAM EXAMPLE:

LDIA #1001B ; basic frequency : 60 KHz tone output

OUTA P30

LDIA #0011B ; 600 Hz tone output

OUTA P24

LDIA #0001B

OUTA P23

SPEECH SYNTHESIZER

BLOCK DIAGRAM

Set Speech Address

(Write 3times)

P6 Write

Set Sample Rate

P5 Write

Speech ROM

Speech Decoder

7 Bits DAC

Vo

SPI

Speech

Interrupt

P6.3 read

Speech

Active

* This specification are subject to be changed without notice.

11.30.2001 24

Share Link: