M-Square
Technologies
Corp.
A Subsidiary of Realtek Group
RTS3351C
DUAL CHANNEL VOICE MELODY
Features
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Operating voltage range: 2.4V ~ 5.0V
64K
脳
7 bits Data ROM
Dual-channel voice melody can play out simultaneously; the voice melody can be played in
2 different or the same instrument.
1 sequential trigger key and 3 direct trigger key
4 LED output, where LED pattern can be either flashing or chasing according to melody.
2 outputs for motor driver, MT1 & MT2; high signal of each output is programmable using
the melody ROM.
Provide 2 option pins (MS1, MS2) for Power-ON Play, Power-ON Stand-by, or trigger
mode selections
1 CNTO pin output
Typical frequency: 1.4 MHz
General Description
RTS3351C is a dual channel voice synthesizer. The dual tone voice melody is generated
through programming the sampling rates. There are two kinds of instruments which can be
simultaneously played out with sustainable voice, therefore, using small voice-ROM size,
RTS3351C can achieve real instrument effects (especially instruments that need sustainable
voice). Multiple musical instrument effects (more than 2 channels) are achieved by combining
two chips together to perform 4-channel voice melody. RTS3351C also provides 2
programmable output drivers (MT1 & MT2) and 4 LED outputs for various applications.
Block Diagram
OSCI
OSCO
MS1
MS2
STGB
TR1B
TR2B
TR3B
LED
Main
Control
LED1
LED2
LED3
LED4
CNTO
Speech1
Multiplexer
&
ROM
Speech2
D/A
BD
MOTOR
MT1
MT2
V2.0 Data Sheet
May, 12/2002
www.msquaretech.com
Page 7 of 1
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