
W528XXX DESIGN GUIDE
ADPCM VOICE SYNTHESIZER
(
PowerSpeech
)
Public Release Date: March 1999
Revision A1
- 1 -
INTRODUCTION
The W528xxx family are programmable speech synthesis ICs that utilize the ADPCM coding method
to generate all types of voice effects.
The W528xxx's LOAD and JUMP commands and four programmable registers provide powerful user-
programmable functions that make this chip suitable for an extremely wide range of speech IC
applications. Before developing their own
PowerSpeech
programs and codes, customers should
review the application notes presented below.
The W528xxx family includes the W528S03, W528S05, W528S08, W528S10, W528S12, W528S15,
W528S20, W528S25, W528S30,W528S40,W528S50 and W528S60.
The ROM size of each of these products is shown below:
BODY
W528S03
W528S05
W528S08
W528S10
W528S12
W528S15
Duration
3 Sec
5 Sec
8 Sec
10 Sec
12 Sec
15 Sec
ROM Size(bit)
96K
128K
288K
336K
384K
480K
BODY
W528S20
W528S25
W528S30
W52840
W528S50
W528S60
Duration
20 Sec
25 Sec
30 Sec
40 Sec
50 Sec
60 Sec
ROM Size(bit)
576K
672K
768K
1216K
1376K
1536K
FEATURES
Programmable speech synthesizer
Wide operating voltage range: 2.4 to 5.5 volts
4-bit ADPCM synthesis method
Provides 4 direct trigger inputs that can easily be extended to 8 or 12 matrix trigger inputs
Two trigger input debounce times ( Long/ Short ) can be set
Provides up to 2 LEDs and 3 STOP outputs
Every LED pin can drive 3 LEDs simultaneously
LED flash frequency: 3 Hz
AUD output current: 5 mA
Flexible functions programmable through the following:
LD (load), JP (jump) commands
Four registers: R0, EN, STOP, and MODE
Conditional instructions
Speech equation
END instruction