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參數(shù)資料
| 型號(hào)： | PT2258-SL |
| 廠商： | Princeton Technology Corporation |
| 英文描述： | 6-Channel Electronic Volume Controller IC |
| 中文描述： | 6通道電子音量控制IC |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 236K |
| 代理商： | PT2258-SL |
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Tel: 886-2-66296288
ACKNOWLEDGE
During the Acknowledge Clock Pulse, the master (μP) puts a resistive HIGH level on the SDA Line.
The peripheral (audio processor) that acknowledges has to pull-down (LOW) the SDA line during the
Acknowledge Clock Pulse so that the SDA Line is in a Stable Low State during this Clock Pulse.
Please refer to the diagram below.
The audio processor that has been addressed has to generate an Acknowledge after receiving each
byte, otherwise, the SDA Line will remain at the High Level during the ninth (9th) Clock Pulse. In this
case, the master transmitter can generate the STOP Information in order to abort the transfer.
PT2258 V1.2
- 6 -
July, 2005
6-Channel Electronic Volume Controller IC
PT2258
DATA
CLK
Start
MSB
Acknowledgment
from Receiver
1
2
3
7
8
9
4
TRANSMISSION WITHOUT ACKNOWLEDGE
If you want to avoid the acknowledge detection of the audio processor, a simpler μP transmission may
be used. Wait one clock and do not check the slave acknowledge of this same clock then send the new
data. If you use this approach, there are greater chances of faulty operation as well as decrease in
noise immunity.
INTERFACE PROTOCOL
The interface protocol consists of the following:
A Start bit
A Chip Address Byte
ACK=Acknowledge bit
A Data byte
A Stop bit
Please refer to the diagram below:
PT2258 ADDRESS
START
ACK
DATA
ACK
STOP
MSB
1
MSB
FIRST BYTE
0
0
1
LSB
0
LSB
DATA TRANSMITTED (N-BYTES + ACKNOWLEDGE)
DATA
ACK
0
0
0
MSB
LSB
Notes:
1.
2.
ACK=Acknowledge
Max. Clock Speed=100K Bits/s
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT2258 | 6-Channel Electronic Volume Controller IC |
| PT2258-S | 6-Channel Electronic Volume Controller IC |
| PT2259 | Volume Controller IC |
| PT2260 | Heatsinks RoHS Compliant: Yes |
| PT2260-R2 | REMOTE CONTROL ENCODER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT2259 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Volume Controller IC |
| 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 |
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