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AK4343VN Datasheet, PDF (48/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP
[AK4343]
■ ιϑτϛϡʔτػೳ
DACೖྗͷσΟδλϧ෦ʹιϑτϛϡʔτػೳΛ಺ଂ͠·͢ɻιϑτϛϡʔτ͸SMUTE bitͰίϯτϩʔϧ
Ͱ͖·͢ɻSMUTE bitΛ “1”ʹ͢ΔͱDVTM bitͰઃఆͨ͠αΠΫϧͰೖྗσʔλ͕−∞(“0”)·ͰΞςωʔγϣ
ϯ͞Ε·͢ɻSMUTE bitΛ “0”ʹ͢Δͱ−∞ঢ়ଶ͕ղআ͞Εɺ−∞͔ΒDVTM bitͰઃఆͨ͠αΠΫϧͰɺDVL/R7-0
bitsͰઃఆͨ͠ϘϦϡʔϜ஋·Ͱ෮͢·͠ؼɻιϑτϛϡʔτ։࢝ޙɺDVTM bitͰઃఆͨ͠αΠΫϧҎ಺ʹ
ղআ͞ΕΔͱΞςωʔγϣϯ͕தஅ͞Εɺಉ͡αΠΫϧͰɺDVL/R7-0 bitsͰઃఆͨ͠ϘϦϡʔϜ஋·Ͱ෮ؼ
͠·͢(Figure 36)ɻ
SMUTE bit
DVL/R7-0 bits
A tte n u a tio n
DVTM bit
(1)
DVTM bit
(3)
-∞
GD
GD
(2)
Analog O utput
Figure 36. ιϑτϛϡʔτػೳ
(1) DVTM bitͰઃఆͨ͠αΠΫϧͰೖྗσʔλ͕−∞(“0”)·ͰΞςωʔγϣϯ͞Ε·͢ɻ
(2) σΟδλϧೖྗʹର͢ΔΞφϩάग़ྗ͸܈஗Ԇ(GD)Λ࣋ͪ·͢ɻ
(3) ιϑτϛϡʔτ։࢝ޙɺDVTM bitͰઃఆͨ͠αΠΫϧҎ಺ʹղআ͞ΕΔͱΞςωʔγϣϯ͕தஅ͞Εɺ
ಉ͡αΠΫϧͰɺDVL/R7-0 bitsͰઃఆͨ͠ϘϦϡʔϜ஋·Ͱ෮͢·͠ؼɻ
MS0478-J-02
- 48 -
2010/11