MSM9803 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

MSM9803

Voice Synthesis IC with Built-in Mask ROM

Oki Electric Industry 

¡ Semiconductor

MSM9802/03/05-xxx

A2, A1

00

Table 3.1 Random Address Setup Example

A0, SW2-SW0

0001

0010

0011

0100

0101

Phrase

sunny

rainy

cloudy

snowy

sunny

1110

1111

rainy

snowy

Random playback starts when the timing shown in Figure 3.3 is input to the RND pin. A random

address is fixed based on the "H" level time of the RND pin during IC oscillation. Random

address is captured at the fall of the RND pin, and voice playback commences. Therefore, when

power is turned on, or when RESET is input, the phrase at fixed address "0001" is played while

the random counter remains initialized until random playback is initiated.

RESET (I)

RND (I)

BUSY (O)

AOUT (O)

tW (RAN)

tRA

Random address fixed time

Oscillation start

Playback

(Address = 0001)

tW (RAN)

Random address fixed time

tRA

Playback

(Address = random)

Figure 3.3 Random Address Capture

16/51

Share Link: