SN66340
4-Channel Speech Controller
December 6, 2000
1
INTRODUCTION
SN66340 is a 340 seconds single chip 4-channel voice synthesizer IC which
contains I/O ports and a tiny controller. By programming through the tiny
controller, user's applications including section combination, trigger modes,
output status, high performance melody, multiple voices, and other logic
functions can be implemented.
FEATURES
Single power supply 2.4V 5.1V
Built in a tiny controller
340 seconds voice capacity are provided
One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are
provided
128*4 bits RAM are provided
Maximum 64k program ROM is provided
Readable ROM code data
Built in a high quality speech synthesizer
Four independent voice channels
Adaptive playing speed from 4k-40kHz is provided for all 4 channels
individually
Automatic repetition for every channel
A 6-bit*8-bit Multiplier is embed to modulate the volume of synthesized
voices
Two digital mixers (with saturation control) are provided
Two 8-bit current output DA converters (Channel 1 + Channel 2
DA1,
Channel 3 + Channel 4
DA2 )
System clock: 2M Hz ( R-type or Crystal Option)
SN66340
4-Channel Speech Controller
December 6, 2000
2
PIN ASSIGNMENT
Symbol
I/O
Function Description
P10
I
Bit0 of input port 1
P11
I
Bit1 of input port 1
P12
I
Bit2 of input port 1
P13
I
Bit3 of input port 1
P20
I/O Bit0 of I/O port 2
P21
I/O Bit1 of I/O port 2
P22
I/O Bit2 of I/O port 2
P23
I/O Bit3 of I/O port 2
P30
I/O Bit0 of I/O port 3
P31
I/O Bit1 of I/O port 3
P32
I/O Bit2 of I/O port 3
P33
I/O Bit3 of I/O port 3
P40
O
Bit0 of output port 3
P41
O
Bit1 of output port 3
P42
O
Bit2 of output port 3
P43
O
Bit3 of output port 3
V
DD
I
Positive power supply
GND
I
Negative power supply
OSC/XIN
I
Oscillator / Crystal In
XOUT
O
Crystal Out
CKSEL
I
Clock type select
`L'
R type (1M)
`H'
2M Crystal
Internal pull low.
VO1
O
D/A current output, for channel 1 and 2
VO2
O
D/A current output, for channel 3 and 4
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