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: 26/105页
文件大小: 1286K
代理商: TAS5508PAGR
u
Coefficient
Digit 16
u
Coefficient
Digit 15
u
Coefficient
Digit 14
u
Coefficient
Digit 13
S
x
Coefficient
Digit 12
x
Coefficient
Digit 11
x
Coefficient
Digit 10
x
Coefficient
Digit 9
Word 1
(Most-
Significant
Word)
Integer
Digit 3
Integer
Digit 4
(Bits 211 29)
Integer
Digit 2
Integer
Digit 1
Sign
Bit
x
Coefficient
Digit 8
x
Coefficient
Digit 7
x.
x
Coefficient
Digit 6
x
Coefficient
Digit 5
x
Coefficient
Digit 4
x
Coefficient
Digit 3
x
Coefficient
Digit 2
x
Coefficient
Digit 1
Word 2
(Least-
Significant
Word)
Fraction
Digit 5
Integer
Digit 4
(Bit 28)
0
Fraction
Digit 6
Fraction
Digit 4
Fraction
Digit 3
Fraction
Digit 2
Fraction
Digit 1
Integer
Digit 6
Integer
Digit 5
u = unused or don’t care bits
Digit = hexadecimal digit
M0009-02
2.3.2.3 TAS5508 Audio Processing
TAS5508
8-Channel Digital Audio PWM Processor
www.ti.com
SLES091D – FEBRUARY 2004 – REVISED JULY 2009
Figure 2-9. Alignment of 25.23 Coefficient in Two 32-Bit I2C Words
The TAS5508 digital audio processing is designed so that noise produced by filter operations is
maintained below the smallest signal amplitude of interest, as shown in Figure 2-10. The TAS5508
achieves this low noise level by increasing the precision of the signal representation substantially above
the number of bits that are absolutely necessary to represent the input signal.
Similarly, the TAS5508 carries additional precision in the form of overflow bits to permit the value of
intermediate calculations to exceed the input precision without clipping. The TAS5508 advanced digital
audio processor achieves both of these important performance capabilities by using a high-performance
digital audio processing architecture with a 48-bit data path, 28-bit filter coefficients, and a 76-bit
accumulator.
Description
27
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