SNC725 データシートの表示（PDF） - Sonix Technology Co., Ltd

部品番号

コンポーネント説明

メーカー

SNC725

16-bit Voice Processor

Sonix Technology Co., Ltd 

SNC725

16-bit Voice Processor

IREN

P0.15

Overflow

Timer2

2

I/O Pad

P0.15 Modulated with a carry signal

8. TIMER/COUNTER

SNC725 provides three 8 -bit timer/event counters (T0/T1/T2). Each timer is 8-bit binary

up-count timer with pre-scalar and auto-reload function. Timer 0 (T0) is used when voice

playing, so user should avoid to use T0.

(system clock)/2*

/2

TnC (8-bit)

Enable

If equal, Time out

/4

/8

MU

8-bit Up

Counter

comparator

/256

clear

Pre-scalar

Auto-reload

9. DAC & PWM

To play out voices, SNC725 contains two different solutions, DAC and PWM, for the

users’ applications. The user can choose one of these two solutions in his design. Only

one function can be activated at one time.

DAC: A 10-bit current type digital-to-analog converter is built-in SNC725. The

relationship between input digital data and output analog current is listed in the following

table. Also, the recommended application circuit is illustrated as follows.

Ver:1.2

6

October 23, 2002

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