SNC82168
12-Channel MIDI/Speech Controller
================== CONTENTS =================
1
2
3
4
5
INTRODUCTION.........................................................................................................................3
FEATURES ...................................................................................................................................3
PIN ASSIGNMENT......................................................................................................................4
BLOCK DIAGRAM .....................................................................................................................5
FUNCTION DESCRIPTION.......................................................................................................5
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.
5.10.
OSCILLATOR................................................................................................................................5
ROM...........................................................................................................................................6
RAM...........................................................................................................................................6
POWER DOWN MODE ..................................................................................................................6
IR FUNCTION...............................................................................................................................7
I/O PORTS ...................................................................................................................................7
SAMPLING RATE COUNTERS........................................................................................................7
AUTO REPETITION.......................................................................................................................8
VOICE SYNTHESIZER ...................................................................................................................8
DAC ...........................................................................................................................................8
6
7
8
APPLICATION CIRCUIT...........................................................................................................9
ABSOLUTE MAXIMUM RATING..........................................................................................12
ELECTRICAL CHARACTERISTICS.....................................................................................12
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Ver: 1.5
Sep. 8, 2006