APLUS aP8942A
VOICE OTP
FEATURES
● Standard CMOS process.● Embedded 1M bits EPROM.
● 42 sec Voice Length at 6KHz sampling and 4-bit ADPCM compression.
● Maximum 32 voice groups.
● Combination of voice blocks to extend playback duration.
● 960 table entries are available for voice block combinations.
● User selectable PCM or ADPCM data compression.
● Two triggering modes are available (EPROM programmable options). - Key Trigger Mode – Combinations of S1 ~ S8 to trigger 32 Voice Groups; SBT sequential trigger is possible. - CPU Parallel Trigger Mode – Combinations of S1 ~ S5 with SBT goes HIGH to strobe start the voice playback.
● Voice Group Trigger Options: Edge / Level; Hold / Un-hold; Retrigger / Non-retrigger.
● Whole Chip Options: Ramp / No-ramp; Output Options; Key / CPU trigger mode.
● 16ms (@ 8KHz sampling rate) Debounce Time for both Key and CPU Trigger Mode.
● RST pin set to HIGH to stop playback at once.
● Two user programmable outputs for STOP pulse, BUSY signal and flashing LED.
● Built-in oscillator to control sampling frequency with an external resistor.