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| 型號： | TAS5508BPAG |
| 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)： | 42/103頁 |
| 文件大?。?/td> | 1198K |
| 代理商： | TAS5508BPAG |
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TAS5508B
8-Channel Digital Audio PWM Processor
www.ti.com
SLES162C – DECEMBER 2005 – REVISED JULY 2009
Because RESET is an asynchronous signal, clicks and pops produced during the application (the leading
edge) of RESET cannot be avoided. However, the transition from the hard-mute state (M-state) to the
operational state is performed using a quiet start-up sequence to minimize noise. This control uses the
PWM reset and unmute sequence to shut down and start up the PWM. A detailed description of these
sequences is contained in the PWM section. If a completely quiet reset or power-down sequence is
desired, MUTE should be applied before applying RESET.
The rising edge of the reset pulse begins device initialization before the transition to the operational mode.
During device initialization, all controls are reset to their initial states. Table 3-2 shows the default control
settings following a reset.
Table 3-2. Values Set During Reset
CONTROL
SETTING
Output mixer configuration
0xD0 bit 30 = 0 (remapped output mixer configuration)
High pass
Enabled
Unmute from clock error
Hard unmute
Input automute
Enabled
Output automute
Enabled
De-emphasis
Disabled
Serial data interface format
I2S, 24-bit
Individual channel mute
No channels are muted
Automute delay
5 ms
Automute threshold 1
< 8 bits
Automute threshold 2
Same as automute threshold 1
Modulation limit
97.7% (Note: Some power stages require a lower
modulation index)
Six- or eight-channel configuration
Eight channels
Volume and mute update rate
Volume ramp 88.2 ms
Treble and bass slew rate
Update every 1.31 ms
Bank switching
Manual bank selection is enabled
Biquad coefficients
Set to all pass
Input mixer coefficients
Input N
→ Channel N, no attenuation
Output mixer coefficients
Channel N
→ Output N, no attenuation
Subwoofer sum into Ch1 and Ch2
Gain of 0
Ch1 and Ch2 sum in subwoofer
Gain of 0
Bass and treble bypass/inline
Bypass
DRC bypass/inline
Bypass
DRC
Default values
Master volume
Mute
Individual channel volumes
0 dB
All bass and treble indexes
0x12 neutral
Treble filter sets
Filter set 3
Bass filter sets
Filter set 3
Loudness
Loudness disabled, default values
AM interference mode enable
Disabled
AM interference mode IF
455 kHz
AM interference mode select sequence
1
AM interference mode tuned frequency and
0000, BCD
input mode
TAS5508B Controls and Status
43
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5508BPAGG4 | 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: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TAS5508BPAGR | 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: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| 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: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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