SNC12120
One Channel Speech Controller
Test
I
Test pin
4. Block Diagram
ROM
Program/Speech
384K×10 bits
Address Pointers/ STACK
Timing
OSC
Generator
SRAM (128 nibbles)
Watch Dog
Sampling Rate Counter
Voice
Push-Pull
Circuit
ALU
Synthesizer
IO port 1
IO port 2
IO port 3
IO port 6
5. FUNCTION DESCRIPTIONS
5.1 Oscillator
SNC12120 accepts RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follows.
VCC
r
OSC
RC Oscillator
5.2 ROM
SNC12120 contains a substantial 384K words (10-bit) internal ROM, which is shared
by program and resource data. Program, voice and data are shared within this same
384K words ROM.
4
Ver: 1.4
March 17, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
