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參數(shù)資料
| 型號： | PGA2320IDWG4 |
| 英文描述： | Stereo Audio Volume Control |
| 中文描述： | 立體聲音頻音量控制 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 218K |
| 代理商： | PGA2320IDWG4 |
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SBOS312B JULY 2004 REVISED DECEMBER 2004
SERIAL CONTROL PORT
www.ti.com
8
The serial control port is utilized to program the gain
settings for the PGA2320. The serial control port includes
three input pins and one output pin. The inputs include CS
(pin 2), SDI (pin 3), and SCLK (pin 6). The sole output pin
is SDO (pin 7).
The CS pin functions as the chip select input. Data may be
written to the PGA2320 only when CS is low. SDI is the
serial data input pin. Control data is provided as a 16-bit
word at the SDI pin, 8 bits each for the left and right channel
gain settings. 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 PGA2320 devices. Daisy-chain
operation is described in detail later in this section. SDO
is a tristate output, and assumes a high impedance state
when CS is high.
The protocol for the serial control port is shown in Figure 2.
See Figure 3 for detailed timing specifications of the serial
control port.
Gain Byte Format is MSB First, Straight Binary
R0 is the Least Significant Bit of the Right Channel Gain Byte
R7 is the Most Significant Bit of the Right Channel Gain Byte
L0 is the Least Significant Bit of the Left Channel Gain Byte
L7 is the Most Significant Bit of the Left Channel Gain Byte
SDI is latched on the rising edge of SCLK
SDO transitions on the falling edge of SCLK
CS
SCLK
SDI
SDO
R6
R5
R4
R3
R2
R1
R0
L7
L6
L5
L4
L3
L2
L1
L0
R7
R7
R6
R5
R4
R3
R2
R1
R0
L7
L6
L5
L4
L3
L2
L1
L0
Figure 2. Serial Interface Protocol
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PGA2320IDWR | 功能描述:音頻放大器 .+/-15V Stereo Audio Volume Control RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| PGA2320IDWRG4 | 功能描述:音頻放大器 .+/-15V Stereo Audio Volume Control RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| PGA2320IN | 制造商:Texas Instruments 功能描述:+/-15V STEREO AUDIO VOLUME CONTROL - Rail/Tube |
| PGA238H008B5-1938R | 制造商:FCI 功能描述: |
| PGA238H012B1-1938R | 制造商:FCI 功能描述: |
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