ML2201 Просмотр технического описания (PDF) - Oki Electric Industry

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ML2201

Speech Synthesizer LSI with on-chip 384K Mask ROM

Oki Electric Industry 

1Semiconductor

FEDL2201-01

ML2201–XXX

FUNCTIONAL DESCRIPTION

Sampling Frequency

You can select a sampling frequency for each phrase address from the following list while you are working on

sound data. Select a sampling frequency that satisfies fSAM = 3.9 to 28.0 kHz from the values obtained with the

dividing factors as shown in the Table 1 below.

Table 1 Sampling Frequency

Sampling Frequency

At fEXTCLK = 4.096 MHz

4.0 kHz

5.3 kHz

6.4 kHz

8.0 kHz

10.6 kHz

12.8 kHz

16.0 kHz

Dividing Factor

fEXTCLK/1024

fEXTCLK/768

fEXTCLK/640

fEXTCLK/512

fEXTCLK/384

fEXTCLK/320

fEXTCLK/256

Memory Allocation and Playback Time Length

As shown in the Figure 1, the on-chip Mask ROM of ML2201 is partitioned into four areas, Phrase Control Table,

Address Control Table, Test Data area and User’s Data area. The actual data area where user’s sound data can be

stored is 378 Kbit, that is the total on-chip Mask ROM capacity minus 6 Kbit.

Phrase Control Table Area

Address Control Table Area

Test Data Area

2 Kbit

2 Kbit

2 Kbit

User’s Sound Data Area

378 Kbit

Figure 1 On-chip Mask ROM (384 Kbit) Memory Allocation

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