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參數資料
| 型號： | TLC320AD77CDB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | GREEN, PLASTIC, SSOP-28 |
| 文件頁數： | 8/33頁 |
| 文件大小： | 391K |
| 代理商： | TLC320AD77CDB |
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2–6
2.16.2
Power Down/Reset
The TLC320AD77C is capable of entering a stand-by mode at reduced power when no activity is required.
To initiate the reset sequence, PDN_RSTB is held low for a minimum of 10 ns. As long as the pin is held
low, the device is in the power-down state.
In order for the dynamic logic to be properly powered down, the clocks should not be stopped before the
PDN_RSTB pin goes low. Otherwise, the device may drain additional supply current.
2.16.3
Reinitialization Sequence
When PDN_RSTB is returned to high, the device begins a reinitialization sequence after all clocks are
active. The output data becomes valid after a minimum of 128 LRCLK cycles after the pin is pulled high.
During the initialization sequence the outputs of the DAC and ADC are invalid.
Any change in the control lines (MOD0, MOD1, MOD2, DEM0, DEM1, SPDMOD, PDN_RST) or phase shift
in LRCLK triggers the reinitialization sequence.
In order for the dynamic logic to be properly powered down, the clocks should not be stopped before the
PDN_RSTB pin goes low. Otherwise, the device may drain additional supply current.
2.17 DAC De-Emphasis Filter
De-emphasis is only supported for three sampling rates (fs): 32 kHz, 44.1 kHz, and 48 kHz in normal speed
operation. The DEM0 and DEM1 pins select the filter coefficients and enable or disable the filter. Figure 2–5
illustrates the de-emphasis filtering characteristics.
0
–10
3.18
(50
s)
10.6
(15
s)
f – Frequency – kHz
Response
–
dB
De-emphasis
Figure 2–5. De-Emphasis Characteristics
2.17.1
De-Emphasis Selection
De-emphasis control is achieved using the DEM1 and DEM0 pins. The pin control is defined in the following
table.
DEM 1
DEM 0
DE-EMPHASIS
0
32 kHz
0
1
44.1 kHz
1
0
48 kHz
1
Off
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相關代理商/技術參數 |
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| TLC320AD77CDBG4 | 功能描述:接口—CODEC STEREO AUDIO ADA RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLC320AD77CDBR | 功能描述:接口—CODEC STEREO AUDIO ADA RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLC320AD77CDBRG4 | 功能描述:接口—CODEC STEREO AUDIO ADA RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLC320AD80C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Audio Processor Subsystem |
| TLC320AD80CPM | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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