AK4642VN Datasheet, PDF (79/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
3. PLLεϨʔϒϞʔυ(MCKI pin)ͷ৔߹
PMPLL bit
(Addr:01H, D0)
MCKO bit
(Addr:01H, D1)
External MCKI
(1)
(1)
(2)
Input
Example
Audio I/F Format: MSB justified (ADC & DAC)
PLL Reference clock: MCKI
BICK frequency: 64fs
Sampling Frequency: 8kHz
(1) Addr:01H, Data:00H
(2) Stop the external clocks
Figure 57. Clock Stopping Sequence (3)
<खॱྫ>
(1) PLLͷύϫʔμ΢ϯ: PMPLL bit = “1” → “0”
MCKOग़ྗͷఀࢭ: MCKO bit = “1” → “0”
(2) ֎෦ΫϩοΫΛࢭΊͯԼ͍͞ɻ
4. ֎෦ΫϩοΫϞʔυͷ৔߹
External MCKI
External BICK
External LRCK
(1)
Input
(1)
Input
(1)
Input
Example
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
(1) Stop the external clocks
Figure 58. Clock Stopping Sequence (4)
<खॱྫ>
(1) ֎෦ΫϩοΫΛࢭΊͯԼ͍͞ɻ
„ ύϫʔμ΢ϯ
֤ϒϩοΫΛύϫʔμ΢ϯ͠ɺ֤ΫϩοΫఀࢭ͔ͭPMVCM bit = “0”ͱ͢Δ͜ͱͰిྲྀΛγϟοτμ΢ϯ(typ.
10µA)Ͱ͖·͢ɻ·ͨɺ֤ΫϩοΫఀࢭ͔ͭPDN pin = “L”ͱ͢Δ͜ͱͰిྲྀΛγϟοτμ΢ϯ(typ. 10µA)͢
Δ͜ͱ΋ՄೳͰ͢ɻୠ͠ɺ͜ͷ৔߹Ϩδελ͕ॳظԽ͞Ε·͢ɻ
MS0358-J-02
- 79 -
2005/04