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TAS5755MDFD 데이터시트(PDF) 39 Page - Texas Instruments

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부품명 TAS5755MDFD
상세설명  2 x 50-W or 2 x 19-W1 x 50-W Digital Input Audio Amplifier With Equalizer, 2- Band DRC, And License-Free 3D Effect
PDF  76 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

TAS5755MDFD 데이터시트(HTML) 39 Page - Texas Instruments

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(1or0)
2 +
´
1
(1or0)
2 +(1or0)
2
+.......(1or0)
2
+.......(1or0)
2
´
´
´
´
0
–1
–4
–23
2 Bit
1
2 Bit
0
2
Bit
–1
2
Bit
–4
2
Bit
–23
M0126-01
2
Bit
–23
S_xx.xxxx_xxxx_xxxx_xxxx_xxxx_xxx
2
Bit
–5
2
Bit
–1
2 Bit
0
SignBit
2 Bit
1
M0125-01
A6
A0
ACK
Acknowledge
I CDevice Addressand
Read/WriteBit
2
R/W
A6
A0
R/W ACK
A0 ACK
D7
D0
ACK
Start
Condition
Stop
Condition
Acknowledge
Acknowledge
Acknowledge
LastDataByte
ACK
FirstDataByte
RepeatStart
Condition
Not
Acknowledge
I CDevice Addressand
Read/WriteBit
2
Subaddress
OtherDataBytes
A7
A6
A5
D7
D0 ACK
Acknowledge
D7
D0
T0036-04
39
TAS5755M
www.ti.com
SLOS982 – AUGUST 2017
Product Folder Links: TAS5755M
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
Programming (continued)
Figure 64. Multiple-Byte Read Transfer
9.5.2 26-Bit 3.23 Number Format
All mixer gain coefficients are 26-bit coefficients using a 3.23 number format. Numbers formatted as 3.23
numbers means that there are 3 bits to the left of the binary point and 23 bits to the right of the binary point. This
is shown in Figure 65.
Figure 65. 3.23 Format
The decimal value of a 3.23 format number can be found by following the weighting shown in Figure 65. If 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 Figure 66 applied to obtain the magnitude
of the negative number.
Figure 66. Conversion Weighting Factors — 3.23 Format To Floating Point
Gain coefficients, entered via the I2C bus, must be entered as 32-bit binary numbers. The format of the 32-bit
number (4-byte or 8-digit hexadecimal number) is shown in Figure 67.



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