參數(shù)資料
型號(hào)： AK7712A-VT
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No
中文描述： 內(nèi)置20位ADC / DAC的尖端音頻DSP
文件頁數(shù)： 35/87頁
文件大?。?/td> 968K
代理商： AK7712A-VT
ASAHI KASEI
[AK7712A-VT]
0180-E-02
1997/12
- 35 -
4) ALU
ALU can execute 34-bit arithmetic operation and 24-bit arithmetic
logical operation as follows.
* 34-bit arithmetic operation * 24-bit arithmetic
logical operation
-
+
<<
< 1
| |
/20, /18, /16
: round
: A-B
: A+B
: B through
: B through + 1
: the absolute value
$
&
#
!
1-
1+
: OR
: AND
: Exclusive-OR
: NOT
: A-1
: A+1
ALU outputs three flags mentioned below, holds the last flag's state at ALU-NOP
* SGF: This flag shows MSB(+4 bits) of ALU. SGF flag shows "0" when the result is zero or positive,
and shows "1" when the result is negative.
* OVF: This flag shows the overflow(exceeding the 0-th bit) of operated result of ALU. When overflow is
occurred, it shows "1" else "0".
The data is output to DBUS as follows at overflow;
positive overflow: 7FFFFF(HEX) , negative overflow: 800000(HEX).
In addition, when the data exceed the overflow margin on the way of calculation, this flag is held on "1",
output the above data to DBUS.
* ZRF: This flag shows "1" when the result of 24-bit(0
～
-23) calculation at ALU is "0".
The 20,18 and 16-bit rounding is prepared. 20-bit rounding execute the addition of "1" to -20th bit( if LSB = all "0"
then +0), and execute half-adjust. In the same way, 18-,16-bit rounding add "1" to -18th, -16th bit respectively. The
through +1 adds "1" to -24th bit, for the calculation data to be obtained as data rounded to 24-bit in advance, then
the execution step for rounding can be omitted. The location of addition point of "1" for 20-bit rounding is shown
below.
"<1" (B through +1) adds "1" to -25th bit of the input data. In the case that the calculated data is output on DBUS,
the data is rounded off to 24bits.
,OPCR*DR, ,,,, , ;
,OPCR*DR, ,,,, , ;
,OPCR*DR,IDR0=SH0 <1 ,,,, , ;
,OP ,IDR0=SH0 + LDR0 ,,,, , ;
,OP ,IDR0=SH0 + LDR0 ,,,, , ;
,OP , ,,,, , ;
,OP , ,,,,ODR0, ;ODR0 is the rounded value of calculated data
<List of ALU Command>
<Example program for 24-bit data output>
相關(guān)PDF資料
PDF描述
AK7714 Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No
AK7714VT Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK7712AVTP 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:BUILT-IN 20-BIT ADC/DAC SOPHISTICATED AUDIO DSP
AK7714 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Audio Codec with DSP and Delay RAM
AK7714VT 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Audio Codec with DSP and Delay RAM
AK7716VT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC
AK7719 制造商:AKM 制造商全稱:AKM 功能描述:Low Power DSP for Voice and Audio Processing
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