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參數(shù)資料
| 型號： | TAS5028APAG |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8 Channel Digital Audio PWM Processor |
| 中文描述： | 8通道數(shù)字音頻PWM處理器 |
| 文件頁數(shù)： | 28/82頁 |
| 文件大?。?/td> | 1226K |
| 代理商： | TAS5028APAG |
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Introduction
20
SLES112 — June 2004
TAS5028A
1.8.1 Automute and Mute
The TAS5028A has individual channel automute controls that are enabled via the I
2
C interface. There are two
separate detectors used to trigger the automute:
Input automute: All channels are muted when all 8 inputs to the TAS5028A are less in magnitude than the
input threshold value for a programmable amount of time.
Output automute: A single channel is muted when the output of the DAP section is less in magnitude than
the input threshold value for a programmable amount of time.
The detection period and thresholds for these two detectors are the same.
This time interval is selectable via I
2
C to be from 1 ms. to 110 ms. The increments of time are 1, 2, 3, 4, 5, 10,
20, 30, 40, 50, 60, 70, 80, 90, 100, and 110 ms. This interval is independent of the sample rate. The default
value is mask programmable.
The input threshold value is an unsigned magnitude that is expressed as a bit position. This value is adjustable
via I
2
C. The range of the input threshold adjustment is from below the LSB (bit position 0) to below bit position
12 in a 24 bit input data word (bit positions 8 to 20 in the DSPE). This provides an input threshold that can be
adjusted for 12 to 24 bits of data. The default value is mask programmable.
31 30 29 28 27 26 25 24 23 22 21
20 19 18 17 16 15 14 13 12 11 10 9 8
7 6 5 4 3 2 1 0
23 22 21 20 19 18 17 16 15 14 13
12 11 10 9 8 7 6 5 4 3 2 1 0
DVD Data Range
CD Data Range
Threshold Range
24-Bit Input
32-Bit in DSPE
Representation
Figure 1
15. Automute Threshold
The automute state is exited when the TAS5028A receives one sample that is greater that the output threshold.
The output threshold can be one of two values:
Equal to the input threshold
6 dB (one bit position) greater than the input threshold
The value for the output threshold is selectable via I
2
C. The default value is mask programmable.
The system latency enables the data value that is above the threshold to be preserved and output.
A mute command initiated by automute, master mute, individual I
2
C mute, the AM interference mute
sequence, or the bank switch mute sequence overrides an unmute command or a volume command. While
a mute command is activated, the commanded channels transition to the mute state. When a channel is
unmuted, it goes to the last commanded volume setting that has been received for that channel.
1.9
Output Mixer
The TAS5028A provides an 8
×
2 output mixer for channels 1, 2, 3, 4, 5, and 6. For channels 7 and 8 the
TAS5028A provides an 8
×
3 output mixer. These mixers allow each output to be any ratio of any two (three)
signal processed channels. The control parameters for the output crossbar mixer are programmable via the
I
2
C interface.
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| TAS5028APAGG4 | 8 Channel Digital Audio PWM Processor |
| TAS5028APAGR | 8 Channel Digital Audio PWM Processor |
| TAS5028APAGRG4 | 8 Channel Digital Audio PWM Processor |
| TAS5028PAGR | 8 Channel Digital Audio PWM Processor |
| TAS5028PAGRG4 | 8 Channel Digital Audio PWM Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5028APAGG4 | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028APAGR | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028APAGRG4 | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028PAG | 功能描述:音頻 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| TAS5028PAGG4 | 功能描述:音頻 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
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