AK7712A-VT Datasheet, PDF (30/87 Pages) Asahi Kasei Microsystems – Built-in 20-bit ADC/DAC Sophisticated Audio DSP

ASAHI KASEI
[AK7712A-VT]
This 34-bit data is shifted 15 bits to right and then is added to the upper data.
<Example of Calculation Program(45 × 31-bit)>
,OP, ,
,OP, ,
,OP,CR × DR ,
,OP,CR × DR ,
,OP,CR × DR ,IDR0=SDLF <<
,OP,CR × DR ,IDR1=SH0 <<
,OP,CR × DR ,IDR0=SHR6 + LDR0
,OP,
,IDR2=SHR6 <<
,OP,
,IDR0=SH0 + LDR0
,PP,
,IDR0=BHRF + LDR0
,OP,
,
,PP,
,IDR1=BDRF + LDR1
,CPU,DU1,,
,;Read of Coefficient(MSB) and Data(MSB)
, , ,,
,;
, ,DU1,,
,;YH × XH,Read of Data(LSB)
,CPU, ,,
,;YH × XH,Read of Coefficient(LSB)
, ,DD1,,
,;YH × XL(shifted 6bit to right)
, , ,,
,;YL × XL(shifted 21 to right)
, , ,,
,;YL × XH
, , ,,
,;
, , ,,
,;
, , ,,ODR2 ,;
, , ,,
,;ODRB: lower 24 bits data
, , ,,ODRB ,;DR1: upper 24 bits data
0180-E-02
- 30 -
1997/12