AK4368 Datasheet, PDF (35/58 Pages) Asahi Kasei Microsystems – PLL & HP-AMP DAC

ASAHI KASEI
[AK4368]
2) DAC → Lineout
Power Supply
PDN pin
PMVCM bit
Clock Input
PMDAC bit
DAC Internal
State
SDTI pin
(1) >150ns
(2)
>0
(6)
Don’t care
(5) >0 (at 3D OFF)
(5) >0 (at 3D ON)
PD(Power-down)
Normal Operation
DACL,
DACR bits
(3) >0
3D1-0
(when
bits
3D is
used)
“00”(3D
OFF)
PMLO bit
(4) >0
“01”(3D ON)
ATTL/R7-0 bits
00H(MUTE)
FFH(0dB)
Don’t care
Don’t care
PD
“00”
00H(MUTE)
Normal Operation
“01”
FFH(0dB)
LMUTE,
ATTS3-0 bits
10H(MUTE)
0FH(0dB)
(8) GD (9) 1061/fs (8) (9)
(8) (9)
(Hi-Z)
(7)
LOUT/ROUT pins
(7)
(7)
(Hi-Z)
Figure 27. DAC͓ΑͼLineoutͷύϫʔΞοϓʗμ΢ϯγʔέϯε(Don’t care: Hi-ZΛআ͘)
(1) ޙ্ཱ͛ͪݯిɺ150nsҎ্͔ͯͬܦΒPDN pinΛ “H”ʹͯ͠Լ͍͞ɻ
(2) PDN pinΛ “H”ʹ͔ͯ͠ΒPMVCM bitʹ “1”Λॻ͖ࠐΜͰԼ͍͞ɻ
(3) PMVCM bitʹ “1”Λॻ͖ࠐΜͰ͔ΒDACL, DACR bitsʹ “1”Λॻ͖ࠐΜͰԼ͍͞ɻ
(4) 3DػೳΛ࢖༻͢Δͱ͖͸ɺDACL, DACR bitsʹ“1”Λॻ͖ࠐΜͰ͔Β3D1-0 bitsʹ“01”Λॻ͖ࠐΜͰͩ͘͞
͍ɻ
(5) 3DػೳΛ࢖༻͠ͳ͍৔߹͸ɺDACL, DACR bitsʹ “1”Λॻ͖ࠐΜͰ͔ΒPMDAC, PMLO bitsʹ “1”Λॻ͖ࠐ
ΜͰԼ͍͞ɻ3DػೳΛ࢖༻͢Δ৔߹͸ɺ3D1-0bitsʹ“01”Λॻ͖ࠐΜͰ͔ΒPMDAC, PMLO bitsʹ “1”Λॻ
͖ࠐΜͰԼ͍͞ɻ
(6) DACͷಈ࡞ʹ͸֤ΫϩοΫ(MCKI, BICK, LRCK)͕ඞཁͰ͢ɻPMDAC bit = “0”ͷ࣌͸֤ΫϩοΫΛࢭΊΔ
͜ͱ͕Ͱ͖·͢ɻLOUT/ROUTग़ྗ෦͸ΫϩοΫ͕͞څڙΕ͍ͯͳͯ͘΋ಈ࡞͠·͢ɻ
(7) PMLO bitΛ੾Γସ͑ΔͱLOUT, ROUT pinsʹϙοϓϊΠζ͕ग़ྗ͞Ε·͢ɻ
(8) σΟδλϧೖྗʹର͢ΔΞφϩάग़ྗ͸22/fs(=499µs@fs=44.1kHz)ͷ܈஗Ԇ(GD)Λ࣋ͪ·͢ɻ
(9) σΟδλϧϘϦϡʔϜͷભҠ࣌ؒ͸ATS bitͰઃఆͰ͖·͢ɻॳظ஋͸1061/fs(=24ms@fs=44.1kHz)Ͱ͢ɻ
MS0409-J-01
- 35 -
2005/08