AK5701 Datasheet, PDF (54/62 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP 16-Bit Stereo ADC

ASAHI KASEI
5. ֎෦ΫϩοΫϞʔυͰ࢖༻͢Δ৔߹(ϚελϞʔυ)
[AK5701]
Power Supply
PDN pin
PMVCM bit
(Addr:10H, D2)
MCKI pin
(1)
(2) (3)
M/S bit
(Addr:11H, D1)
TE3-0 bits
(Addr:1DH, D7-4)
TMASTER bit
(Addr:1EH, D1)
"1010"
BCLK pin
LRCK pin
Input
Example:
Audio I/F Format: I2S
BCLK frequency at Master Mode: 64fs
Input Master Clock Select: 256fs
Sampling Frequency: 44.1kHz
(1) Power Supply & PDN pin = “L” Æ “H”
"0101"
Output
(2)Addr:11H, Data:26H
Addr:14H, Data:23H
Addr:15H, Data:2FH
Addr:1DH, Data:50H
Addr:1EH, Data:02H
BCLK and LRCK output
(3)Addr:10H, Data:04H
Figure 49. Clock Set Up Sequence (5)
<खॱྫ>
(1) ޙ্ཱ͛ͪݯిɺPDN pin “L” Æ “H”
͜ͷ۠ؒ͸AK5701ͷϦηοτͷͨΊɺ150nsҎ্ͷ “L”͕۠ؒඞཁͰ͢ɻ
(2) ͜ͷ۠ؒʹɺDIF1-0, FS1-0, BCKO1-0, M/S, TE3-0, TMASTER bitsͷઃఆΛ࣍ͷॱ൪ͷͱ͓ΓߦͬͯԼ
͍͞ɻ
(2a) M/S bit = “1”, FS3-0, BCKO1-0ͷઃఆɻ
(2b) DIF1-0ͷઃఆɻ
(2c) TE3-0 bits = “0101”
(2d) TMASTER bit = “1”: BCLK, LRCKग़ྗΛ։࢝͠·͢ɻ
(3) VCOMͷύϫʔΞοϓɿ PMVCM bit = “0” Æ “1”
֤ϒϩοΫΛ্ཱͪ͛Δલʹ࠷ॳʹVCOMΛ্ཱͪ͛ͯԼ͍͞ɻ
EXT Master Mode͔Β΄͔ͷΫϩοΫϞʔυ΁มߋ͢Δ৔߹͸ɺPDN pin = “L” Æ “H”ͱ͢Δ͔ɺTE3-0 bits =
“1010”Λॻ͖ࠐΜͰ͔ΒɺTable 1ʹैͬͯϨδελઃఆΛߦͬͯԼ͍͞ɻ
MS0404-J-00
- 54 -
2005/08