1. GENERAL DESCRIPTION:
The AV1232E, AV1832D, AV2432C are single-chip voice synthesizing CMOS IC. They can synthesize
voice up to 12, 18 and 24 seconds, using APLUS 5-bit LOGPCM algorithm. Customer speech data can
be edited and programmed into ROM by changing one mask during the device fabrication.
(1). Single power supply can operate from 2.4V to 5V.
(2). The total voice duration is about 12, 18 or 24 seconds those can be partitioned up to 32 voice_sections.
Each voice_section length is flexible.
(3). Each voice_section can select 4 kinds of End_Address (i.e. 4 kinds of playing_length), the longest
playing_length is the voice+mute length. The voice+mute length can be up to 22 seconds for each
voice_section ( at 6kHz sample rate ).
(4). Total 255 voice_steps are available for 32 sub_tables. For each voice_step, it can specify one
voice_section, one playing_length of voice_section, one kind of playback speed and STS1, STS2, STS3,
STS4 output enable options.
8 kinds of playback speed: 1>5.0k ; 2>5.6k ; 3>6.2k ; 4>7.0k ; 5>8.0k ; 6>9.4k ; 7>11.3k ; 8>14.1k Hz
( With Rosc= 180k ohms at Vdd= 3V )
STS1, 2, 3, 4 output enable options: each output pin with one control bit. ( “0” → enable, “1” → disable )
(5). Three trigger input mode: MATRIX, ALONE and CPU_INTERFACE. ( Mask option )
In MATRIX and ALONE, there are Mode, Priority and Debounce selections.
One control input pin “MODE/STS4” can be used as Mode selection or STS4. ( Mask option )
□ MATRIX mode: 4x4 matrix inputs ; M1~M16 (ROW1~4 x COL1~4)
◎Mode selection: Mode=0 → subtable1~16 ; Mode=1 → subtable17~32.
◎Priority: M1>M2>M3>M4 ; M5>M6>M7>M8 ; M9>M10>M11>M12 ; M13>M14>M15>M16.
◎Debounce: 11ms or 1ms.
□ ALONE mode: 8 alone inputs ; A1~A8 (ROW1~4 + COL1~4)
◎Mode selection: Mode=0 → subtable1~8 ; Mode=1 → subtable9~16
◎Debounce: 10ms or 50us
Each alone input can choose 1M+CDS, 10M or 10M+CDS pull-low input type.
If MODE/STS4 is selected for STS4 output, MATRIX is only subtable1~16 available and ALONE is only
In these 2 modes, all the trigger input can be assign as different playing mode with following options:
1 Rev 1.0 2003/02/12