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参数资料
| 型号： | PGA4311U |
| 英文描述： | 4 CHANNEL AUDIO VOLUME CONTROL |
| 中文描述： | 4通道音频音量控制 |
| 文件页数： | 8/15页 |
| 文件大小： | 481K |
| 代理商： | PGA4311U |
SBOS230A
–
MARCH 2002
–
REVISED JUNE 2002
www.ti.com
8
SERIAL CONTROL PORT
The serial control port is utilized to program the gain set-
tings for the PGA4311. The serial control port includes
three input pins and one output pin. The inputs include
CS (pin 14), SDI (pin 13), and SCLK (pin 15). The sole
output pin is SDO (pin 16).
The CS pin functions as the chip select input. Data may
be written to the PGA4311 only when CS is LOW. SDI
is the serial data input pin. Control data is provided as
a 32-bit word at the SDI pin, 8 bits each for each chan-
nel gain setting.
Data is formatted as MSB first, straight binary code.
SCLK is the serial clock input. Data is clocked into SDI
on the rising edge of SCLK.
SDO is the serial data output pin, and is used when
daisy-chaining multiple PGA4311 devices. Daisy-chain
operation is described in detail later in this section. SDO
is a tri-state output, and assumes a high impedance state
when CS is HIGH. Data appears at SDO on the falling
edge of SCLK.
The protocol for the serial control port is shown in
Figure 2. See Figure 3 for detailed timing specifi-
cations for the serial control port.
Gain Byte Format is MSB First, Straight Binary
0 is the Least Significant Bit of the Channel Gain Byte
7 is the Most Significant Bit of the Channel Gain Byte
SDI is latched on the rising edge of SCLK.
SDO transitions on the falling edge of SCLK.
Figure 2. Serial Interface Protocol.
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相关代理商/技术参数 |
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| PGA4311U | 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL 4311 SOIC28 |
| PGA4311U/1K | 功能描述:音频放大器 Multich FSK/OOK CMOS RF Transceiver RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| PGA4311U/1KG4 | 功能描述:音频放大器 IEEE 802.15.4 RF Transceiver RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| PGA4311U2 | 制造商:BB 制造商全称:BB 功能描述:4-Channel Audio Volume Control |
| PGA4311UA | 功能描述:音频放大器 4-Ch +/-5V Audio Volume Control RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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