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參數資料
| 型號： | SNC521 |
| 廠商： | SONIX Technology Co., Ltd. |
| 英文描述： | One Channel Direct Drive Speech Controller |
| 中文描述： | 一個通道直接驅動語音控制器 |
| 文件頁數： | 4/11頁 |
| 文件大?。?/td> | 267K |
| 代理商： | SNC521 |
SNC521
One Channel Direct Drive Speech Controller
Ver: 1.3
August 26, 2003
4
5.6. I/O Ports
P2 and P3 are two 4-bit I/O ports. Any bit of P2 and P3 can be programmed as
either input or output port individually. Any valid data transition (H
L or L
H) of
P2 and P3 can reactivate the chip when the chip is in power-down stage.
I/O Port Configuration (P20~P23, P30~P33)
Note: Weak N-MOS can serve as pull-low resistor.
5.7. DAC & PWM
SNC521 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 SNC521. 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.
Port Data
Port Status
To Internal Data Bus
Read Control
PAD
Weak
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| SNC532 | Two Channel Direct Drive Speech Controller |
| SNC533 | Two Channel Direct Drive Speech Controller |
| SNC538 | Two Channel Direct Drive Speech Controller |
| SNC539 | Two Channel Direct Drive Speech Controller |
| SNC542 | Two Channel Direct Drive Speech Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SNC532 | 制造商:SONIX 制造商全稱:SONIX 功能描述:Two Channel Direct Drive Speech Controller |
| SNC532_05 | 制造商:SONIX 制造商全稱:SONIX 功能描述:Two Channel Direct Drive Speech Controller |
| SNC533 | 制造商:SONIX 制造商全稱:SONIX 功能描述:Two Channel Direct Drive Speech Controller |
| SNC538 | 制造商:SONIX 制造商全稱:SONIX 功能描述:Two Channel Direct Drive Speech Controller |
| SNC538_05 | 制造商:SONIX 制造商全稱:SONIX 功能描述:Two Channel Direct Drive Speech Controller |
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