FEDL2250DIGEST-09
OKI Semiconductor
ML2250 family
Table below summarizes the points of difference between the ML2250 family and currently manufactured
products with a ROM built in.
ML2250 family
MSM6650 family
MSM9800 family
ML2210 family
Serial
Parallel, serial or Parallel or
stand-alone
Interface
Parallel or serial
stand-alone
2-bit ADPCM2
4-bit ADPCM2
8-bit PCM
8-bit non-linear PCM
16-bit PCM
4-bit ADPCM
8-bit PCM
8-bit non-linear PCM
4-bit ADPCM
8-bit PCM
8-bit PCM
8-bit non-linear PCM
Playback method
Max. number of
phrases
256
127
63
247
4.0/5.3/6.0/6.4/8.0/10.7
Sampling frequency /12.0/12.8/16.0/21.3/
4.0/5.3/6.4/8.0/
10.7/12.8/16.0/
32.0
4.0/5.3/6.4/8.0/10.7/ 4.0/5.3/6.4/8.0/10.7/
(kHz)
24.0/25.6/32.0/42.7/
48.0
12.8/16.0
12.8/16.0
256 kHz (CR
oscillation)
4.096 MHz (XT)
Voltage type: 12
bits
256 kHz (CR
oscillation)
4.096 MHz (XT)
Clock frequency
4.096 MHz
4.096 MHz
D/A converter
Low-pass filter
Voltage type: 14 bits
Current type: 10 bits Current type: 12 bits
FIR type interpolation
filter
Secondary comb
filter
Secondary comb
Primary comb filter
filter
Number of channels 2 channels
2 channels
1 channel
1 channel
None
Both 2 channels without Can edit 8
Phrase control table user definable phrase
restrictions
phrases (1
channel only)
4 steps
(–6 dB steps)
4 types
Can edit 8 phrases
29 steps
Volume adjustment
Set at VREF.
None
Set at VREF.
None
(–2 dB/–5 dB steps)
Repeat function
STOP
No limit
Each channel
independent
Simultaneous
channels 1 and 2
Available
Available
Seam silence
interval in
0 (Note)
4 sampling cycles 3 sampling cycles
4 sampling cycles
continuous playback
External data input
possible
Others
—
—
—
Note: Continuous playback shown in the figure below is possible.
1 phrase
1 phrase
1 phrase
1 phrase
Conventional
ML2250 family
Silence interval
No silence interval
2/36
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