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参数资料
型号： TAS5508PAGR
厂商： TEXAS INSTRUMENTS INC
元件分类： 消费家电
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封装： GREEN, PLASTIC, TQFP-64
文件页数： 20/105页
文件大小： 1286K
代理商： TAS5508PAGR
2.3
TAS5508 DAP Architecture
2.3.1
TAS5508 DAP Architecture Diagrams
TAS5508
8-Channel Digital Audio PWM Processor
www.ti.com
SLES091D – FEBRUARY 2004 – REVISED JULY 2009
Table 2-2. TAS5508 Audio Processing Feature Sets
32 kHz–96 kHz
176.4- and 192-kHz
FEATURE
8-CHANNEL FEATURE SET
6 + 2 LINEOUT FEATURE SET
FEATURE SET
Signal-processing channels
8
6 + 2
3
Pass-through channels
N/A
5
Master volume
1 for 8 channels
1 for 6 channels
1 for 3 channels
Individual channel volume
8
3
controls
Four bass and treble tone controls
Two bass and treble tone
with
＝18-dB range, programmable
with
＝18-dB range, programmable
controls with
＝18-dB range,
corner frequencies, and second-
programmable corner
Bass and treble tone
order slopes
frequencies, and second-order
controls
L, R, and C (Ch1, 2, and 7)
slopes
LS, RS (Ch3 and 4)
L and R (Ch1 and 2)
LBS, RBS (Ch5 and 6)
Sub (Ch8)
Line L and R (Ch5 and 6)
Biquads
56
21
Dynamic range
DRC1 for seven satellites and
DRC1 for five satellites and DRC2
DRC1 for two satellites and
compressors
DRC2 for sub
for sub (Ch5 and 6 uncompressed)
DRC2 for sub
Each of the three signal-
processing channels or the five
pass-though channel inputs can
Each of the eight signal-processing channel inputs can be any ratio of the
be any ratio of the eight input
Input/output mapping/
eight input channels.
channels.
mixing
Each of the eight outputs can be any ratio of any two processed channels.
Each of the eight outputs can be
any ratio of any of the three
processed channels or five
bypass channels.
DC-blocking filters
(implemented in PWM
Eight channels
section)
Digital de-emphasis
Eight channels for 32 kHz,
Six channels for 32 kHz, 44.1 kHz,
(implemented in PWM
N/A
44.1 kHz, and 48 kHz
and 48 kHz
section)
Loudness
Eight channels
Six channels
Three channels
Number of coefficient sets
Three additional coefficient sets can be stored in memory.
stored
Figure 2-1 shows the TAS5508 DAP architecture for Fs = 96 kHz. Note the TAS5508 bass management
architecture shown in channels 1, 2, 7, and 8. Note that the I2C registers are shown to help the designer
configure the TAS5508.
Figure 2-2 shows the TAS5508 architecture for Fs = 176.4 kHz or Fs = 192 kHz. Note that only channels
1, 2, and 8 contain all the features. Channels 3–7 are pass-through except for master volume control.
Figure 2-3 shows TAS5508 detailed channel processing. The output mixer is 8
＝2 for channels 1–6 and
8
＝3 for channels 7 and 8.
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Description
21
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