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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)： | 9/21頁 |
| 文件大?。?/td> | 445K |
| 代理商： | PT2259 |
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Tel: 886-2-66296288
PT2259 CONTROL SOFTWARE PROCEDURE
PT2259 has a built-in Power-On Reset function which clears the function register to zero after
power-on. In order to ensure normal operation under any operating voltage, it is recommended an
instruction to clear the register must be transmitted. Please refer to the following diagram:
Start 1 0 0 0 1 0 0 0 ACK 1 1 1 1 0 0 0 0 ACK Stop
2259 Address
Clear Registry
The PT2259 function register does not have any default settings. After clearing the register, an initial
value must send in order to each register. If a register does has not been set, it is possible that no
sound will be output.
When adjusting the volume of PT2259, it is necessary to send a multiple of 10dB followed by a 1dB
code to the attenuator in sequence. If this sequence is not followed, or if only a 10dB or 1dB value is
sent, the IC may not operate normally. Please refer to the diagram below:
Example : Request volume setting of –42dB:
Start 1 0 0 0 1 0 0 0 ACK 1 1 1 0 0 1 0 0 ACK 1 1 0 1 0 0 1 0 ACK Stop
2259 Address
-40dB
-2dB
Start 1 0 0 0 1 0 0 0 ACK 1 1 0 1 0 0 1 0 ACK 1 1 1 0 0 1 0 0 ACK Stop
2259Address
-2dB
-40dB
The two methods above are both acceptable.
WARNING! THE FOLLOWING TRANSMISSION METHODS ARE NOT PERMITTED.
Sending only a 10dB attenuation value:
Start 1 0 0 0 1 0 0 0 ACK 1 1 1 0 0 1 0 0 ACK Stop
2259 Address
-40dB
Sending only a 1dB attenuation value:
Start 1 0 0 0 1 0 0 0 ACK 1 1 0 1 0 0 1 0 ACK Stop
2259 Address
-2dB
Sending a 10dB code with a 1dB code simultaneously or in combination with other control codes:
Start 1 0 0 0 1 0 0 0 ACK 1 1 0 1 0 0 1 0 ACK 0 0 1 0 0 0 1 0 ACK 1 1 1 0 0 1 0 0 ACK Stop
2259 Address
-2dB
Right Channel -2dB
PT2259 V1.2
- 9 -
June, 2005
Volume Controller IC
PT2259
-40dB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT2260 | Heatsinks RoHS Compliant: Yes |
| PT2260-R2 | REMOTE CONTROL ENCODER |
| PT2260-R4 | REMOTE CONTROL ENCODER |
| PT2261A | Remote Control Encoder |
| PT2261A-P | Remote Control Encoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PT225S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRIAC|200V V(DRM)|25A I(T)RMS|TO-208VAR1/2 |
| PT2260 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Remote Control Encoder |
| PT2260_06 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Remote Control Encoder |
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