One Channel Speech Controller
SNC15040
4.
Block Diagram
ROM
Program/Speech
84K×12 bits
Address Pointers/ STACK
SRAM (64 nibbles)
Timer
ALU
IO port 2
Timing
Generator
OSC
Sampling Rate Counter
Watch Dog
Timer
PWM
Circuit
Voice
Synthesizer
IO port 5
5. FUNCTION DESCRIPTIONS
5.1 Oscillator
SNC15040 accepts RC type oscillator for system clock. The typical circuit diagram for
oscillator is listed as follows.
VCC
OSC
RC Oscillator
!
5.2 ROM
SNC15040 contains a substantial 84K words (12-bit) internal ROM, which is shared by
program and resource data. Program, voice and data are shared within this same 84K
words ROM.
Ver: 1.5
4
October 30, 2008
SONIX [ SONIX TECHNOLOGY COMPANY ]
