FEDL22620-01
Issue date: Apr 24, 2020
ML22620
4-Channel Mixing Speech Synthesis LSI
■
Overview
ML22620 is a 4-channel mixing speech synthesis LSI with a serial flash memory interface for sound data. It is equipped
with a clock synchronous serial interface.
It adopts a HQ-ADPCM
*1
, 16-bit D/A converter, and low-pass filter for high sound quality, and incorporates a 1.0W mono
speaker amplifier for driving speakers directly. It is also equipped with a function to detect failure.
The functions necessary for sound output are integrated into a single chip, so that sound functions can be realized simply by
adding this LSI.
●
Memory capacity and maximum sound production time (HQ-ADPCM
*1
algorithm, registered phrase 1024)
Product Name
Flash memory capacity
Maximum sound production time (sec)
f
s
=8.0kHz
f
s
=16.0kHz
f
s
=32.0kHz
ML22620
128Mbits
(Serial Flash Memory)
5240
2620
1310
Application Circuit
Host
MCU
16bit
DAC
Filter
Volume
MIX
SPI
Analog Signal
MIX
Decode
FLASH
MEMORY
Speaker
AMP
*1
HQ-ADPCM is "Ky's" high-quality audio compression technique.
"Ky's" is a registered trademark of Kyushu Institute of Technology, a
national university corporation.
Summary of Contents for LAPIS Semiconductor ML22620
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