AK4343VN Datasheet, PDF (62/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

[AK4343]
ʻεϐʔΧΞϯϓͷίϯτϩʔϧγʔέϯεʼ
PMSPK bitͰεϐʔΧΞϯϓΛPower-up/downͰ͖·͢ɻPMSPK bit͕“0”ͷ৔߹ɺSPP, SPN pin͸Hi-ZʹͳΓ
·͢ɻPMSPK bit͕ “1”ͷ࣌ɺSPPSN bitΛ“0”ʹ͢ΔͱεϐʔΧΞϯϓ͸ύϫʔηʔϒϞʔυʹͳΓ·͢ɻ͜
ͷ࣌ɺSPP pin͸Hi-ZɺSPN pin͸HVDD/2Λग़ྗ͠·͢ɻ
ݯి౤ೖޙɺPDN pinΛ“L”͔Β“H”ʹมߋ͠ɺPMSPK bitΛ“1”ʹ͢ΔͱɺSPP, SPN pin͸ύϫʔηʔϒϞʔυ
Ͱ্ཱ͕ͪΓ·͢ɻ͜ͷ࣌ɺSPP pin͸Hi-Zʹɺ SPN pin͸HVDD/2ʹͳΓ·͕͢ɺύϫʔηʔϒϞʔυͰཱ
্ͪ͛ΔͱɺϙοϓϊΠζΛ௿ͤ͞ݮΔ͜ͱ͕Ͱ͖·͢ɻ·ͨɺPower-down࣌(PMSPK bit=“0”)΋ύϫʔηʔ
ϒϞʔυΛܦ༝͢Δ͜ͱͰɺಉ༷ʹϙοϓϊΠζΛ௿ͤ͞ݮΔ͜ͱ͕Ͱ͖·͢ɻ
PMSPK
0
1
SPPSN
Mode
SPP
SPN
x
ύϫʔμ΢ϯ
Hi-Z
Hi-Z
0
ύϫʔηʔϒ
Hi-Z
HVDD/2
1
௨ৗಈ࡞
௨ৗಈ࡞ ௨ৗಈ࡞
Table 56 εϐʔΧΞϯϓͷϞʔυઃఆ (x: Don’t care)
(default)
PMSPK bit
SPPSN bit
SPP pin
Hi-Z
Hi-Z
SPN pin _Hi-Z ^HVDD/2
HVDD/2
Hi-Z
>1ms
>0
Figure 59. Power-up/Power-down Timing for Speaker-Amp
MS0478-J-02
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2010/11