AVxx08 Series

Rev 1.3

2003/9/18

1

1. GENERAL DESCRIPTION:

The

AVH308 , AV0708 , AV1408 and AV2108 are single-chip voice synthesizing CMOS IC.

They are low cost with proper functions and can synthesize voice up to 3.5, 7, 14 and 21 seconds, using

Aplus 4-bit LOGPCM algorithm. Customer speech data can be programmed into ROM by changing one mask

during the device fabrication. Besides, not only a very flexible functions I/O pin is available for the user to

apply in various applications, but also an interactive development tool “EzSpeech” is ready for user-friendly

programming.

2. FEATURES:

(1). Single power supply can operate from 2.4V to 6.4V (in this range, user can set Rosc as a fixed value).

(2). The total voice duration is about 3.5, 7, 14 or 21 seconds those can be partitioned up to 8 voice_sections.

Each voice_section length is flexible.

(3). Voice length can be individually up to 3.5, 7, 14 or 21 seconds at 6kHz S.R. for each voice_section.

Voice+mute length can be individually up to 11, 21, 21 or 21 seconds at 6kHz sample rate for each

voice_section.

(4). Total 16 voice_steps are available for 2 sub_tables. Each sub_table can only use maximum 8

voice_steps. For each voice_step, it can specify one voice_section and IO1 output enable options if IO1

is set as an output.

(5). Build in oscillator, 15 kinds of playback speed option for internal resistor used : ( 4.0k ~ 18.1kHz)

A

B

C

D

E

F

G

H

18.1kHz

14.4kHz

12.0kHz

10.3kHz

9.0kHz

8.0kHz

7.2kHz

6.6kHz

I

J

K

L

M

N

O

-

6.0kHz

5.6kHz

5.2kHz

4.8kHz

4.5kHz

4.3kHz

4.0kHz

-

<Internal oscillator: OSC pad must be bonded to GND>

(6). IO1 can be either input or output pin (Mask option).

(7). Optional “Two Triggers Input” (TG and IO1), or “One Trigger Input” (TG pin only).

(A). Each input pin has mask options for Edge/Level, Hold/Unhold and Retrigger/Irritrigger trigger modes.

(B). TG input can choose CDS+1M、CDS、1M pull-low、10M pull low or floating input type.

(C). IO1 input can choose CDS+1M、CDS、1M pull-low or floating input type.

(D). Debounce time: Long debounce for push buttons. Short debounce for switches. (※ In Two Triggers

Input Mode, only one kind of debounce time is available.)

(E). Priority：TG > IO1.

(8). IO1 has the following output option A~F :

(A). Stop_High pulse : high active stop pulse output whenever device stop playing.

(B). Busy_High active : high active signal output during playing.