AK4645EN Datasheet, PDF (94/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4645]
4. ֎෦ΫϩοΫεϨʔϒϞʔυͷ৔߹
External MCKI
(1)
Input
External BICK
(1)
Input
External LRCK
(1)
Input
Example
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
(1) Stop the external clocks
Figure 86. Clock Stopping Sequence (4)
<खॱྫ>
(1) ֎෦ΫϩοΫΛࢭΊͯԼ͍͞ɻ
5. ֎෦ΫϩοΫϚελϞʔυͷ৔߹
External MCKI
(1)
Input
BICK
Output
LRCK
Output
"H" or "L"
"H" or "L"
Example
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
(1) Stop the external MCKI
Figure 87. Clock Stopping Sequence (5)
<खॱྫ>
(1) MCKIΛࢭΊͯԼ͍͞ɻBICK͓ΑͼLRCK͸ “H”·ͨ͸ “L”ݻʹఆ͞Ε·͢ɻ
„ ύϫʔμ΢ϯ
֤ϒϩοΫΛύϫʔμ΢ϯ͠ɺ֤ΫϩοΫఀࢭ͔ͭPMVCM bit = “0”ͱ͢Δ͜ͱͰిྲྀΛγϟοτμ΢ϯ(typ.
20µA)Ͱ͖·͢ɻ·ͨɺ֤ΫϩοΫఀࢭ͔ͭPDN pin = “L”ͱ͢Δ͜ͱͰిྲྀΛγϟοτμ΢ϯ(typ. 1µA)͢Δ
͜ͱ΋ՄೳͰ͢ɻୠ͠ɺ͜ͷ৔߹Ϩδελ͕ॳظԽ͞Ε·͢ɻ
MS0543-J-00
- 94 -
2006/09