msm9802 Oki Semiconductor, msm9802 Datasheet - Page 35

• Manufacturer Part Number: msm9802
• Description: Voice Synthesis Ic With Built-in Mask Rom
• Manufacturer: Oki Semiconductor

Sampling Frequency
As shown in Table 1.1, 7 sampling frequencies are available.
A sampling frequency can be selected and assigned to each phrase in ROM data.
Note: When CR oscillation is selected, 10.6 kHz, 12.8 kHz, and 16 kHz cannot be selected.
Recording/Playback Time
Figure 2.1 below shows memory allocation of the on-chip Mask ROM. About 11 Kbits of data area is allocated for
the Phrase Control Table, Phrase Data Control and Test Data.
Therefore, actual data area for storing sound data equals the total Mask ROM capacity minus 11 Kbits.
OKI Semiconductor
(3) COMMON
(At standard oscillation frequency)
Sampling Frequency
Phrase Control Table Area
10.6 kHz
12.8 kHz
16.0 kHz
Phrase Data Control Area
4.0 kHz
5.3 kHz
6.4 kHz
8.0 kHz
Test Data Area
User's Area
Figure 2.1 Memory Allocation of On-chip Mask ROM
Table 1.1 Sampling Frequency
Ceramic Oscillation
XT/CR = “H”
f
4K bit
4K bit
3K bit
501K bit(MSM9802)
1013K bit (MSM9803)
2037K bit (MSM9805)
OSC1
f
f
f
f
f
f
OSC1
OSC1
OSC1
OSC1
OSC1
OSC1
/1024
/768
/640
/512
/384
/320
/256
Frequency diving ratio
On-chip Mask ROM Capacity
512K bit (MSM9802)
1M bit (MSM9803)
2M bit (MSM9805)
CR Oscillation
XT/CR = “L”
Unavailable
Unavailable
Unavailable
MSM9802/03/05-xxx
f
f
f
f
OSC2
OSC2
OSC2
OSC2
FEDL9802-03-05-05
/64
/48
/40
/32
35/53