MSS0306-1 Datasheet, PDF (3/19 Pages) Mosel Vitelic, Corp – 3 VOICE ROM

MOSEL VITELIC
MSS0306
Block Diagram
V_DD
V_SS
TG1
TG2
TG3
TG4
TG5/OKY
OUTX
OUTY
OUTZ
OSC
CONTROL
LOGIC
CLOCK
GENERATOR
TIMING
GENERATOR
TRIGGER
TABLE
ADDRESS
GENERATOR
VOICE
ROM
MPCM
DECODER
CURRENT
BUFFER
C _OUT
Pad Description
Pad No. Signal Name
1
V_DD
2
OUTZ
3
C _OUT
4
OUTY
5
OUTX
6
V_SS
7
OSC
8
NC
9
TG5/OKY
10
TG4
11
TG3
12
TG2
13
TG1
I/O
Power
O
O
O
O
Power
I
NC
I
I
I
I
I
Function
Positive power supply
Status ( STOP/BUSY) or LED output
Audio signal current output (for speaker)
Status ( STOP/BUSY) or LED output
Status ( STOP/BUSY) or LED output
Negative power supply
Oscillator resistor input
No connection
Tirgger 5 or One-key input, high active or low active, mask optional
Trigger 4 input, high active or low active, mask optional
Trigger 3 input, high active or low active, mask optional
Trigger 2 input, high active or low active, mask optional
Trigger 1 input, high active or low active, mask optional
Signals
Cout
Cout is tristate during standby.
Cout has zero current output when sound data is zero. Cout has full current output when sound data is the
highest. Cout has half of full current output when sound is silence at middle data value. Cout has half of full
current output when playing sound at appended memory-less mute.
The bypass Cout Resistor is used to bypass the audio output current from Cout. This bypassing extra current to
ground gives a way to prevent the saturation of audio waveform amplified by transistor. This Resistance is 470
ohm typically. It always is not very small. Or user can let it open if the transistor has a fair beta value.
A transistor with beta value 150 is sufficient for typical applications. Larger beta value get larger sound but may
have the amplified waveform saturated.
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PID239 05/96