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參數(shù)資料
| 型號(hào)： | TAS5508BPAGR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁(yè)數(shù)： | 26/103頁(yè) |
| 文件大?。?/td> | 1198K |
| 代理商： | TAS5508BPAGR |
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2.7
Volume, Automute, and Mute
TAS5508B
8-Channel Digital Audio PWM Processor
www.ti.com
SLES162C – DECEMBER 2005 – REVISED JULY 2009
L and R
Sub
The bass and treble filters use a soft update rate that does not produce artifacts during adjustment.
Table 2-4. Bass and Treble Filter Selections
3-dB CORNER FREQUENCIES, Hz
fS
FILTER SET 1
FILTER SET 2
FILTER SET 3
FILTER SET 4
FILTER SET 5
(kHz)
BASS
TREBLE
BASS
TREBLE
BASS
TREBLE
BASS
TREBLE
BASS
TREBLE
32
42
917
83
1833
125
3000
146
3667
167
4333
38
49
1088
99
2177
148
3562
173
4354
198
5146
44.1
57
1263
115
2527
172
4134
201
5053
230
5972
48
63
1375
125
2750
188
4500
219
5500
250
6500
88.2
115
2527
230
5053
345
8269
402
10106
459
11944
96
125
2750
250
5500
375
9000
438
11000
500
13000
176.4
230
5053
459
10106
689
16538
804
20213
919
23888
192
250
5500
500
11000
750
18000
875
22000
1000
26000
The I2C registers that control bass and treble are:
Bass and treble bypass register (0x89–0x90, channels 1–8)
Bass and treble slew rates (0xD0)
Bass filter sets 1–5 (0xDA)
Bass filter index (0xDB)
Treble filter sets 1–5 (0xDC)
Treble filter index (0xDD)
Note that the bass and treble bypass registers (0x89–0x90) are defaulted to the bypass mode. In
order to use the bass and treble, these registers must be in the inline (or enabled) mode for each
channel using bass and treble.
The TAS5508B provides individual channel and master volume controls. Each control provides an
adjustment range of 18 dB to –109 dB in 0.25-dB increments. This permits a total volume device control
range of 36 dB to –109 dB plus mute. The master volume control can be configured to control six or eight
channels.
The TAS5508B has a master soft mute control that can be enabled by a terminal or I2C command. The
device also has individual channel soft mute controls that are enabled via I2C.
The soft volume and mute update rates are programmable. The soft adjustments are performed using a
soft-gain linear update with an I2C-programmable linear step size at a fixed temporal rate. The linear
soft-gain step size can be varied from 0.5 to 0.003906. Table 2-5 lists the linear gain step sizes.
Table 2-5. Linear Gain Step Size
STEP SIZE (GAIN)
0.5
0.25
0.125
0.0625
0.03125
0.015625
0.007813
0.003906
Time to go from 36 db to –109 dB in ms
10.67
21.33
42.67
85.34
170.67
340.35
682.70
1365.4
Time to go from 18 db to –109 dB in ms
1.33
2.67
5.33
10.67
21.33
42.67
85.33
170.67
Time to go from 0 db to –109 dB in ms
0.17
0.33
0.67
1.33
2.67
5.33
10.67
21.33
Description
29
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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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