參數(shù)資料
型號： TAS5508BPAGR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： GREEN, PLASTIC, TQFP-64
文件頁數(shù)： 8/103頁
文件大?。?/td> 1198K
代理商： TAS5508BPAGR
1.3
Changes From the TAS5508A to the TAS5508B
1.4
TAS5508B System Diagrams
TAS5508B
8-Channel Digital Audio PWM Processor
SLES162C – DECEMBER 2005 – REVISED JULY 2009
www.ti.com
High-pass filter is enabled by default (0x03 bit 7)
I2C register 0xD0 bit 30 is added in TAS5508B to support remapped output mixer configuration. It has
a default value of 0.
Table 1-1. I2C Register 0xD0 Bit 30 Usage
0xD0 Bit 30
Output Mixer Configuration
Mode
PWM (Speaker) Operation
Headphone operation
8-channel mode or
1
Pass-through
6-channel mode (2
Normal operation
channels become lineouts)
Constraints are placed in
setting the combined volume
8-channel mode
Normal Operation
below –109 dB and in using
individual channel mute.
0 (default)
Remapped
Following the assertion or
Constraints are placed in
de-assertion of headphone,
6-channel mode (2
setting the combined volume
mute must be asserted and
channels become lineouts)
below –109 dB and in using
de-asserted using the
individual channel mute.
MUTE pin.
The pass-through output mixer configuration means that each DAP channel is mapped to the same output
PWM channel. For example, DAP channel 1 is routed to PWM channel 1, etc.
The remapped output mixer configuration means that the PWM channel could be a mix or rerouting of the
DAP channels. For example, DAP channel 2 is routed to PWM channel 1. This remapping causes some
complications in operation (see Table 1-1).
The TAS55508 recommended initialization sequence to use the pass-through ouput mixer configuration
follows.
1. After TAS5508B reset, the default master volume is muted. It must be updated with a nonmute value
for the system to start.
2. I2C register 0xD0 bit 30 must be set to a value of 1.
Note that for best results, the pass-through ouput mixer configuration is recommended (0xD0 Bit
30 = 1).
When remapping or mixing DAP channels to different PWM output channels (remapped output mixer
configuration) consider the following limitations:
Individual channel mute should not be used.
The sum of the minimum channel volume and master volume should not be below –109 dB.
0xD0 bit 30 = 0
Typical applications for the TAS5508B are 6- to 8-channel audio systems such as DVD or AV receivers.
Figure 1-2 shows the basic system diagram of the DVD receiver.
Introduction
12
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TAS5508BPAGRG4 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
TAS5508C 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-Channel Digital Audio PWM Processor
TAS5508CPAG 功能描述:音頻 DSP 8Ch 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
TAS5508CPAGR 功能描述:音頻 DSP 8Ch 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
TAS5508CPAGR 制造商:Texas Instruments 功能描述:IC Digital Audio PWM Processor 64-TQFP
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