SNC15120
One Channel Speech Controller
4. Block Diagram
ROM
Program/Speech
244K×12 bits
Address Pointers/ STACK
Timing
OSC
Generator
SRAM (128 nibbles)
Watch Dog
Timer
Sampling Rate Counter
Voice
Synthesizer
PWM
Circuit
Timer
ALU
IO port 1
IO port 2
IO port 4
IO port 5
5. FUNCTION DESCRIPTIONS
5.1 Oscillator
SNC15120 accepts RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follows.
VCC
̅
OSC
RC Oscillator
!
5.2 ROM
SNC15120 contains a substantial 244K words (12-bit) internal ROM, which is shared
by program and resource data. Program, voice and data are shared within this same
244K words ROM.
4
Ver: 1.5
October 30, 2008
SONIX [ SONIX TECHNOLOGY COMPANY ]
