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SNC323 Datasheet(PDF) 5 Page - SONiX Technology Company |
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SNC323 Datasheet(HTML) 5 Page - SONiX Technology Company |
5 / 11 page SNC323 Direct Drive Voice/Dual Tone Melody Controller 5.8. IR Function P33 can be modulated with 38.5KHz square wave before sent out to P33 pin. The IR signal can be achieved by this modulated signal. Mode 38.5KHZ P33 PAD "1" 5.9. DAC & PWM SNC323 is an advanced chip to be designed having two optimal methods to play out the voices. One is DAC and the other is PWM. Upon user’s applications, user can select either DAC or PWM in his design. Please be aware that only one method can be activated at a time. DAC: A 7-bit current type digital-to-analog converter is built-in SNC323. The relationship between input digital data and output analog current signal is listed in the following table. Also, the recommended application circuit is illustrated as follows. Input data Typical value of output current (mA) 0 0 1 3/127 … N n*(3/127) … 127 3 Ver: 1.4 June 8, 2005 5 |
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