MSM9831 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

MSM9831

VOICE SYNTHESIS LSI with on-chip 384Kbit MASK ROM

Oki Electric Industry 

¡ Semiconductor

MSM9831-xxx

FUNCTIONAL DESCRIPTION

1. Sampling Frequency

Sampling Frequency can be selected and setup on each phrase address. 7 sampling frequencies

are available for user's choice in preparing Voice Data File at the pre-production stage. Select

sampling frequencies to satisfy fSAM=3.9 to 28.0 kHz obtained by frequency dividing ratios in

Table 1.1.

Table 1.1 Sampling Frequency

Sampling Frequency

Frequency diving ratio

(fOSC=4.096MHz)

4.0kHz

fOSC/1024

5.3kHz

fOSC/768

6.4kHz

fOSC/640

8.0kHz

fOSC/512

10.6kHz

fOSC/384

12.8kHz

fOSC/320

16.0kHz

fOSC/256

2. Recording/Playback Time

Figure 2.1 below shows memory allocation of on-chip 384K bit Mask ROM.

The Mask ROM is partitioned into 4 data areas: user's Area, Phrase Control Table Area, Phrase

Control Area and Test Data Area. Actual memory space is the total Mask ROM capacity (384K

bit) indicated in this document minus 6K bit.

Phrase Control Table Area 2K bit

Phrase Data Control Area 2K bit

Test Data Area

2K bit

User's Area

378K bit

Figure 2.1 Memory Allocation of on-chip Mask ROM (384K bit)

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