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參數(shù)資料
| 型號(hào)： | SNC549 |
| 廠(chǎng)商： | SONIX Technology Co., Ltd. |
| 英文描述： | Two Channel Direct Drive Speech Controller |
| 中文描述： | 雙通道語(yǔ)音控制器直接驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 437K |
| 代理商： | SNC549 |
SNC549
Two Channel Direct Drive Speech Controller
PAD
weak
Port Data
Port Status
Output Port Configuration (P40~P43, P50~P53)
Note: All weak N-MOS’s can serve as pull-low resistors.
5.7. 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"
5.8. DAC & PWM
SNC549 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 SNC549. 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.
Ver: 1.3
August 26, 2003
5
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