參數(shù)資料
型號(hào)： TAS3103IDBTR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO38
封裝： GREEN, PLASTIC, TSSOP-38
文件頁數(shù)： 107/148頁
文件大?。?/td> 1247K
代理商： TAS3103IDBTR
32
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 33.
u
Coefficient
Digit 8
u
S
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
Fraction
Digit 5
Sign
Bit
0
Fraction
Digit 6
Fraction
Digit 4
Fraction
Digit 3
Fraction
Digit 2
Fraction
Digit 1
Integer
Digit 1
u = unused or don’t care bits
Digit = hexadecimal digit
Figure 33. Alignment of 5.23 Coefficient in 32-Bit I2C Word
As Figure 33 shows, the hex value of the integer part of the gain coefficient cannot be concatenated with the hex
value of the fractional part of the gain coefficient to form the 32-bit I2C coefficient. The reason is that the 28-bit
coefficient contains 5 bits of integer, and thus the integer part of the coefficient occupies all of one hex digit and the
most significant bit of the second hex digit. In the same way, the fractional part occupies the lower 3 bits of the second
hex digit, and then occupies the other five hex digits (with the eighth digit being the zero-valued most significant hex
digit).
3.1.2
48-Bit 25.23 Number Format
All level adjustment and threshold coefficients are 48-bit coefficients using a 25.23 number format. Numbers
formatted as 25.23 numbers means that there are 25 bits to the left of the decimal point and 23 bits to the right of the
decimal point. This is shown in Figure 34.
223 Bit
S_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx.xxxx_xxxx_xxxx_xxxx_xxxx_xxx
20 Bit
216 Bit
222 Bit
Sign Bit
223 Bit
21 Bit
210 Bit
Figure 34. 25.23 Format
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TAS3108DCP 功能描述:音頻 DSP 8-Channel Audio DSP 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
TAS3108DCPG4 功能描述:音頻 DSP 8-Channel Audio DSP 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
TAS3108DCPR 功能描述:音頻 DSP 8-Channel Audio DSP 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
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