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SNC352 Datasheet(PDF) 4 Page - SONiX Technology Company

Part # SNC352
Description  Direct Drive Voice/Dual Tone Melody Controller
Download  11 Pages
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Manufacturer  SONIX [SONiX Technology Company]
Direct Link  http://www.sonix.com.tw
Logo SONIX - SONiX Technology Company

SNC352 Datasheet(HTML) 4 Page - SONiX Technology Company

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SNC352
Direct Drive Voice/Dual Tone Melody Controller
5.6. Dual-Tone Generator
A dual-tone melody generator is included to generate 2-channel music songs with a
pleasant square-wave-like timbre. The pitch range of each tone generator is as wide
as 4 octaves (48 different notes totally). The output of dual-tone generator can be
mixed with the output of voice synthesizer to achieve voice playing with BGM
(background music). Additionally, Sonix provides a numbered-musical-notation
representation to help users compose their songs. Further, a MIDI (1.0) file translator
can convert MIDI files into Sonix format.
5.7. I/O Ports
P1 is a 4-bit input port and P2/P3 are two 4-bit I/O ports. Any bit of P2 and P3 can be
programmed as either input or output port individually. Any valid data transition (H
L
or L H) of P1, P2 and P3 can reactivate the chip when the chip is in power-down
mode.
To Internal Data Bus
Read Control
PAD
Weak
Input Port Configuration (P10~P13)
Port Data
Port Status
To Internal Data Bus
Read Control
PAD
Weak
I/O Port Configuration (P20~P23, P30~P33)
Note: weak N-MOS’s can serve as pull-low resistor.
Ver: 1.4
June 8, 2005
4


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