SNC203S
Direct Drive Speech Controller
================= CONTENTS ================
1.
2.
3.
4.
5.
INTRODUCTION........................................................................................................2
FEATURES ..................................................................................................................2
BLOCK DIAGRAM ....................................................................................................3
PIN ASSIGNMENT.....................................................................................................3
FUNCTION DESCRIPTIONS ...................................................................................4
5.1.
OSCILLATOR ...............................................................................................................4
5.2. ROM ..........................................................................................................................4
5.3. RAM ..........................................................................................................................4
5.4.
5.5.
5.6.
5.7.
POWER DOWN MODE..................................................................................................4
SAMPLING RATE COUNTERS .......................................................................................4
EVENT MARK..............................................................................................................5
I/O PORTS ...................................................................................................................5
5.8. DAC & PWM.............................................................................................................6
6.
7.
8.
ABSOLUTE MAXIMUM RATING ..........................................................................8
ELECTRICAL CHARACTERISTICS .....................................................................8
APPLICATION CIRCUIT .........................................................................................9
DISCLAIMER .....................................................................................................................11
1
Ver: 1.2
Sept 20, 2007