AK4612EQ Datasheet, PDF (43/68 Pages) Asahi Kasei Microsystems – 6/8-Channel Audio CODEC

[AK4612]
■ σΟδλϧϘϦϡʔϜػೳ
AK4612͸νϟωϧಠཱσΟδλϧϘϦϡʔϜ(256Ϩϕϧ, 0.5dBεςοϓ)Λ಺ଂ͍ͯ͠·͢ɻݮਰྔ͸Ϩδε
λͷATT7-0 bitͰͦΕͧΕઃఆ͠·͢(Table 17)ɻ
ATT7-0
00H
01H
02H
:
7DH
7EH
7FH
FEH
FFH
Attenuation Level
0dB
-0.5dB
-1.0dB
:
-62.5dB
-63.0dB
-63.5dB
:
-127.0dB
MUTE (-∞)
(default)
Table 17. σΟδλϧϘϦϡʔϜͷݮਰྔ
σΟδλϧϘϦϡʔϜͷભҠ࣌ؒ͸ATS1-0 bitͰઃఆ͠·͢(Table 18)ɻMode0, Mode1, Mode2Ͱ͸ઃఆ஋ؒͷ
ભҠ͸ιϑτભҠͰ͢ɻ͕ͨͬͯ͠ɺભҠதʹεΠονϯάϊΠζ͸ൃੜ͠·ͤΜɻ
Mode
0
1
2
3
ATS1
0
0
1
1
ATS0
0
1
0
1
ATT speed
4096/fs
2048/fs
512/fs
256/fs
(default)
Table 18. σΟδλϧϘϦϡʔϜͷભҠ࣌ؒ
Mode0ͷ৔߹ɺATTઃఆؒͷભҠ͸4096ϨϕϧͰιϑτભҠ͠·͢ɻ00H(0dB)͔ΒFFH(MUTE)·Ͱʹ͸4096/fs
(85.3ms@fs=48kHz)͔͔Γ·͢ɻPDN pinΛ “L” ʹ͢ΔͱɺATT7-0 bit͸00HظॳʹԽ͞Ε·͢ɻATT7-0 bit͸
RSTN bitΛ “0” ʹ͢ΔͱҰ୴00HʹͳΓɺRSTN bitΛ “1” ʹ໭͢ͱઃఆ஋ʹ໭͍͖ͬͯ·͢ɻ
MS1039-J-01
- 43 -
2009/06