AVH308 APLUS [Aplus Intergrated Circuits], AVH308 Datasheet - Page 2

• Manufacturer Part Number: AVH308
• Description: single-chip voice synthesizing CMOS IC
• Manufacturer: APLUS [Aplus Intergrated Circuits]

1. GENERAL DESCRIPTION:
2. FEATURES:
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.
(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.
(3). Voice length can be individually up to 3.5, 7, 14 or 21 seconds at 6kHz S.R. for each voice_section.
(4). Total 16 voice_steps are available for 2 sub_tables. Each sub_table can only use maximum 8
(5). Build in oscillator, 15 kinds of playback speed option for internal resistor used : ( 4.0k ~ 18.1kHz)
(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).
(8). IO1 has the following output option A~F :
voice_steps. For each voice_step, it can specify one voice_section and IO1 output enable options if IO1
is set as an output.
Each voice_section length is flexible.
Voice+mute length can be individually up to 11, 21, 21 or 21 seconds at 6kHz sample rate for each
(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
(E). Priority：TG > IO1.
(A). Stop_High pulse : high active stop pulse output whenever device stop playing.
(B). Busy_High active : high active signal output during playing.
voice_section.
<Internal oscillator: OSC pad must be bonded to GND>
18.1kHz
6.0kHz
The AVH308 , AV0708 , AV1408 and AV2108 are single-chip voice synthesizing CMOS IC.
Input Mode, only one kind of debounce time is available.)
A
I
14.4kHz
5.6kHz
B
J
12.0kHz
5.2kHz
C
K
10.3kHz
4.8kHz
D
L
9.0kHz
4.5kHz
1
M
E
8.0kHz
4.3kHz
N
F
7.2kHz
4.0kHz
G
O
AVxx08 Series
6.6kHz
H
-
-
Rev 1.3
2003/9/18