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FEDL22594-06
ML22594-XXX
The table below summarizes the differences between the exsisting speech synthesis LSIs (ML225XG and
ML22Q573) and the ML22594.
Item
ML22Q573
ML2257X
ML22Q553
ML22594
CPU interface
Serial
Serial
←
←
ROM type
FLASH
MASK
FLASH
MASK
ROM capacity
4 Mbits
2/4 Mbits
4 Mbits
6 Mbits
External ROM
interface
No
←
←
Serial
Playback method
HQ-ADPCM
8-bit straight PCM
8-bit non-linear PCM
16-bit straight PCM
←
←
←
Maximum number of
phrases
1024
←
←
1024
(Internal512 /
External512)
Sampling frequency
(kHz)
6.4/8.0/12.0/
12.8/16.0/24.0/
25.6/32.0/48.0
←
←
←
Clock frequency
4.096 MHz (has a
crystal oscillator
circuit built-in)
←
←
←
D/A converter
16-bit voltage-type
←
←
←
Low-pass filter
FIR interpolation
filter
(High-pass
interpolation)
←
←
←
Speaker driving
amplifier
Built-in
1.0 W
(8
Ω
, DV
DD
= 5 V)
←
←
←
Over-current
detectible function
for Speaker Pins
No
←
Yes
←
Simultaneous sound
production function
(mixing function)
4-channel
←
←
←
Edit ROM
Yes
←
←
←
Volume control
32 levels
←
←
←
Silence insertion
20 to 1024 ms
(4 ms steps)
←
←
←
Repeat function
Yes
←
←
←
External analog
input
Yes
←
←
←
External speech
data input
No
←
←
←
Interval at which a
seam is silent during
continuous playback
(*1)
No
←
←
←
Power supply
voltage
2.7 V to 5.5 V
←
4.5 V to 5.5 V
←
Ambient
temperature
-40
゜
C to 105
゜
C
←
←
←
Package
30-pin SSOP
←
←
←