
AVxx08
Series
Rev 1.3 2003/9/18
2
(C). Busy_Low active : low active signal output during playing.
(D). LED 3Hz flash : 3Hz sink signal output for driving LED during playing at 6kHz sample rate.
(E). LED 6Hz flash : 6Hz sink signal output for driving LED during playing at 6kHz sample rate.
(F). LED dynamic 2/4 : dynamic sink signal output for driving LED during playing.
※
Where (D) and (E) is the LED flash rate at 6kHz sample rate. For different sample rate, the LED flash
rate is different from original 3Hz or 6Hz.
(9). PWM1 and PWM2 can directly drive buzzer or 8, 16, 32 or 64 ohms speaker.
(10). The voice_section length of “voice length + mute length” must be the multiple of 80Hex
(AVH308
) or
100Hex (
AV0708 , AV1408 , AV2108
).
(11). In voice_section sequence arrangement (00~07), If there are some voice_sections with only mute and
without voice, they should be put next to the last voice_section with voice. Besides, that is not allowed to
put a pure mute voice_section between 2 voice_sections with voice, or put the pure mute voice_section
on first place (00).
(12). Oscillator selection:
(A). External oscillator: Connect OSC pin to Vdd with a resistor, Rosc.
(B). Internal oscillator: Connect OSC pin to GND.
(Not suggested because of frequency shift and system
stability)
※
Input Type Description:
Option
Description
CDS + 1M
Normal selection for button trigger.
Only 1M pull-low resistance when key-pressed, and 1M+300K(parallel) pull-low resistance
when key-released.
Internal 300K ohms pull-low resistance, usually for photo-resistor trigger.
CDS
1M pull-low
Internal 1M ohms pull-low resistance, reserve for some special applications.
10M pull-low Internal 10M ohms weak pull-low, usually for touching trigger.
Floating
No internal resistor connection, usually connected to other output pin or connected to GND
by an external resistor.
* 10M pull-low option is not available for IO1 input.
Pull-Low
1M
Pull-Low
Latch
PAD
Buffer
10M
300K
Trigger