AK4642VN Datasheet, PDF (51/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
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 44 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
Figure 34. Power-up/Power-down Timing for Speaker-Amp
MS0358-J-02
- 51 -
2005/04