IC DGTL AUDIO PWM PROC 64-TQFP

TAS5508APAG

Manufacturer Part NumberTAS5508APAG
DescriptionIC DGTL AUDIO PWM PROC 64-TQFP
ManufacturerTexas Instruments
TypePWM Processor
TAS5508APAG datasheet
 


Specifications of TAS5508APAG

ApplicationsDVDMounting TypeSurface Mount
Package / Case64-TQFP, 64-VQFPFor Use WithTAS5342DDV6EVM - TAS5342DDV6EVMTAS5508-5142K7EVM - EVAL MODULE FOR TAS5508B/TAS5142TAS5508-5122C6EVM - EVAL MODULE FOR TAS5508B/TAS5122TAS5508-5121K8EVM - EVAL MODULE FOR TAS5508B/TAS5121
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-17475
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−23
2
Bit
−4
2
Bit
−1
2
Bit
0
2
Bit
3
2
Bit
Sign Bit
The decimal value of a 5.23 format number can be found by following the weighting shown in
the most significant bit is logic 0, the number is a positive number, and the weighting shown yields the
correct number. If the most significant bit is a logic 1, then the number is a negative number. In this case,
every bit must be inverted, a 1 added to the result, and then the weighting shown in
obtain the magnitude of the negative number.
3
2
2
Bit
2
Bit
3
(1 or 0) y 2
+ (1 or 0) y 2
Figure 2-5. Conversion Weighting Factors—5.23 Format to Floating Point
Gain coefficients, entered via the I
32-bit number (4-byte or 8-digit hexadecimal number) is shown in
Sign
Bit
Integer
Digit 1
u
u
u
u
S x
x
x
Coefficient
Coefficient
Digit 8
Digit 7
u = unused or don’t care bits
Digit = hexadecimal digit
Figure 2-6. Alignment of 5.23 Coefficient in 32-Bit I
As
Figure 2-6
shows, the hexadecimal (hex) value of the integer part of the gain coefficient cannot be
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S_xxxx.xxxx_xxxx_xxxx_xxxx_xxxx_xxx
Figure 2-4. 5.23 Format
0
−1
2
Bit
2
Bit
2
0
−1
+
+ (1 or 0) y 2
+ (1 or 0) y 2
+
2
C bus, must be entered as 32-bit binary numbers. The format of the
Fraction
Fraction
Fraction
Digit 1
Digit 2
Digit 3
x. x
x
x
x
x
x
x
x
x
x
x
Coefficient
Coefficient
Coefficient
Digit 6
Digit 5
Digit 4
8-Channel Digital Audio PWM Processor
SLES119A – FEBRUARY 2004 – REVISED JULY 2009
M0007-01
Figure
Figure 2-5
−4
−23
2
Bit
2
Bit
−4
−23
+ (1 or 0) y 2
+
+ (1 or 0) y 2
M0008-01
Figure
2-6.
Fraction
Digit 6
Fraction
Fraction
Digit 4
Digit 5
x
x
x
x
x
x
x
x
x
x
x
Coefficient
Coefficient
Coefficient
Digit 3
Digit 2
Digit 1
M0009-01
2
C Word
Description
TAS5508A
2-5. If
applied to
0
x
25