AK4642VN Datasheet, PDF (61/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
Addr
06H
Register Name
Timer Select
Default
D7
D6
D5
D4
D3
D2
D1
D0
DVTM
0
ZTM1 ZTM0 WTM1 WTM0
0
0
0
0
0
0
0
0
0
0
WTM1-0: ALCϦΧόϦ଴ؒ࣌ػͷઃఆ(see Table 24)
ALCಈ࡞தʹϦϛολಈ࡞͕ൃੜ͠ͳ͍৔߹ɺϦΧόϦಈ࡞Λߦ͏पظΛઃఆ͠·͢ɻॳظ஋͸
“00” (128/fs)Ͱ͢ɻ
ZTM1-0: ALCθϩΫϩελΠϜΞ΢τ࣌ؒͷઃఆ(see Table 23)
ϚΠίϯॻ͖ࠐΈಈ࡞ɺALCϦΧόϦಈ࡞ʹΑΓɺήΠϯ͕มߋ͞ΕΔͷ͸ɺθϩΫϩε͢Δ͔
·ͨ͸λΠϜΞ΢τͨ͠৔߹Ͱ͢ɻॳظ஋͸“00” (128/fs)Ͱ͢ɻ
DVTM: Digital VolumeͷιϑτભҠ࣌ؒΛઃఆ͠·͢ɻ
0: 1061/fs (Default)
1: 256/fs
͜ͷιϑτભҠ࣌ؒ͸ DVL7-0, DVR7-0 bits Λ00H͔ΒFFH΁มߋͨ͠৔߹ͷભҠ࣌ؒͰ͢ɻ
Addr
07H
Register Name
ALC Mode Control 1
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
ALC ZELMN LMAT1 LMAT0 RGAIN0 LMTH0
0
0
0
0
0
0
0
0
LMTH1-0: ALCϦϛολݕग़ઃఆϨϕϧ/ϦΧόϦ଴ػΧ΢ϯλϦηοτϨϕϧ(see Table 21)
Default: “00”
LMTH1 bit͸0BHͷD6 bitͰ͢ɻ
RGAIN1-0: ALCϦΧόϦήΠϯεςοϓ(see Table 25)
Default: “00”
RGAIN1 bit͸03HͷD7 bitͰ͢ɻ
LMAT1-0: ALCϦϛολATTεςοϓ(see Table 22)
Default: “00”
ZELMN: ALCϦϛολಈ࡞࣌θϩΫϩεݕग़Πωʔϒϧ
0: Enable (Default)
1: Disable
ALC: ALCΠωʔϒϧ
0: ALC Disable (Default)
1: ALC Enable
Addr Register Name
08H ALC Mode Control 2
Default
D7
REF7
1
D6
REF6
1
D5
REF5
1
D4
REF4
0
D3
REF3
0
D2
REF2
0
REF7-0: ALCϦΧόϦಈ࡞࣌ͷج४஋ͷઃఆɻ0.375dB step, 242 Level (Table 26)
Default: “E1H” (+30.0dB)
D1
REF1
0
D0
REF0
1
MS0358-J-02
- 61 -
2005/04