參數(shù)資料
型號: PT2259
廠商: Princeton Technology Corporation
英文描述: Volume Controller IC
中文描述: 音量控制IC
文件頁數(shù): 5/21頁
文件大小: 445K
代理商: PT2259
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Tel: 886-2-66296288
BYTE FORMAT
Every byte transmitted to the DATA line consists of 8 bits and each byte must be followed by an
“acknowledge” bit. The MSB is transmitted first.
ACKNOWLEDGE SIGNAL
During the ninth clock pulse, the microprocessor puts a resistive “high” level on the DATA line. If the
peripheral audio processor (PT2259) acknowledges, it will pull the DATA line from a “high” state to a
“l(fā)ow” state during this acknowledge clock phase so that the DATA line is in a stable “l(fā)ow” state during
this clock pulse. Please refer to the diagram below.
PT2259 V1.2
- 5 -
June, 2005
Volume Controller IC
PT2259
The audio processor that has been address (PT2259) must generate an “acknowledge” signal after
receiving each byte or the DATA line will remain at the “high” level during the ninth clock pulse.
TRANSMISSION WITHOUT ACKNOWLEDGE
If you do not wish the audio processor (PT2259) to detect the “acknowledge” signal, a simpler
microprocessor transmission method can be used: after PT2259 has received a byte wait for one clock
pulse and do not acknowledge it. If this approach is used, however, there is a greater chance for faulty
operations to occur and noise immunity will be decreased.
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相關(guān)代理商/技術(shù)參數(shù)
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PT2259_09 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Volume Controller IC
PT2259-S 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Volume Controller IC
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PT2260_06 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Remote Control Encoder