
Preliminary W522AXXX DATA SHEET
PWM SYNTHESIZER
Publication Release Date: May. 2002
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Revision A2
GENERAL DESCRIPTION
W522AXXX is a synthesis IC that utilizes the 8-bit PCM coding method to generate high quality voice effects.
In order to save power, the W522AXXX provides PWM output to drive speaker directly without extra transistor
and resistor.
The W522AXXX’s part number and corresponding duration time at various sampling rate listed as below:
Part number
Duration @ 4KHz
Duration @ 4.8KHz
Duration @ 6KHz
Duration @ 8KHz
W522A008
12.00 seconds
10.00 seconds
8.00 seconds
6.00 seconds
W522A010
16.00 seconds
13.00 seconds
10.50 seconds
8.00 seconds
FEATURES
Wide operating voltage range: 2.4 to 5.5 volts
8-bit PCM algorithm for high sound quality
PWM output to directly drive speaker
Provides 1 direct trigger input (including CDS control circuit) with following mask option of play modes:
One shot (enable or disable interruption)
Toggle ON/OFF
Level hold
Complete cycle level hold (enable or disable interruption)
Single cycle level hold
Provides 1 output with following mask options:
Active high or low in BUSY signal output while voice playing (not including silence)
LED flash type: 1.5Hz, 3Hz or 6Hz.
LED volume control: , , .
Maximum duration (voice duration + silence) in repeat cycle is around 21 seconds at 6 KHz
Repeat number 1 to 8 can be mask optioned for both one shot and single-cycle level hold
Two kinds of trigger input de-bounce time (10 mS or 50
μ
S) by mask option
Four kinds of frequencies, 4/4.8/6/8 KHz, can be chosen by mask option