AK4589 Datasheet, PDF (25/76 Pages) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR

ASAHI KASEI
[AK4589]
ಈ࡞આ໌ (ADC/DAC෦)
γεςϜΫϩοΫ
εϨʔϒϞʔυ࣌ʹඞཁͳΫϩοΫ͸ɺMCLK, LRCK1, BICK1 Ͱ͢ɻMCLKͱLRCK1͸ಉ͢ظΔඞཁ͸͋Γ
·͕͢Ґ૬Λ߹ΘͤΔඞཁ͸͋Γ·ͤΜɻMCLKप೾਺Λઃఆ͢Δํ๏͸ɺDFS0, DFS1 bitͰઃఆ͢Δํ๏
(Manual Setting Mode) ͱσόΠε಺෦Ͱࣗಈઃఆ͢Δํ๏ (Auto Setting Mode) ͷ2͕ͭ͋Γ·͢ɻManual
Setting Mode (ACKS bit = “0”: Default)Ͱ͸ɺDFS1-0 bitͰαϯϓϦϯάεϐʔυ͕ઃఆ͞Ε(Table 1)ɺ֤εϐʔ
υͰͷMCLKप೾਺͸ࣗಈݕग़͞Εɺ಺෦ΫϩοΫ͸ద੾ͳप೾਺ʹࣗಈઃఆ͞Ε·͢(Table 3,4,5)ɻAuto
Setting Mode (ACKS bit = “1”) Ͱ͸ɺMCLKप೾਺͸ࣗಈݕग़͞Ε(Table 6)ɺ಺෦ΫϩοΫ͸ద੾ͳप೾਺ʹ
ࣗಈઃఆ͞ΕΔ(Table 7)ͨΊɺDFS bitͷઃఆ͸ෆཁͰ͢ɻ
ϚελϞʔυ࣌ʹඞཁͳΫϩοΫ͸MCLKͷΈͰ͢ɻϚελΫϩοΫप೾਺ΛCKS1-0 bit(Table 2)Ͱɺαϯϓ
ϦϯάεϐʔυΛDFS1-0 bit(Table 1)Ͱઃఆ͢Δඞཁ͕͋Γ·͢ɻCKS1-0 bitɺDFS1-0 bitΛઃఆͨ͠௚Ͱޙ͸ɺ
BICK1ͱLRCK1ͷग़ྗप೾਺΍σϡʔςΟ͕ཚΕΔ৔߹͕͋Γ·͢ɻ
εϨʔϒϞʔυͷಈ࡞࣌(PDN pin = “H”)ʹ֎෦ΫϩοΫ(MCLK,BICK1,LRCK1)ΛࢭΊͯ͸͍͚·ͤΜɻ͜Ε
ΒͷΫϩοΫ͕͞څڙΕͳ͍৔߹ɺ಺෦ʹμΠφϛοΫͳϩδοΫΛ࢖༻͍ͯ͠ΔͨΊɺաిྲྀ͕ྲྀΕɺಈ
࡞͕ҟৗʹͳΔՄೳੑ͕͋Γ·͢ɻΫϩοΫΛࢭΊΔ৔߹͸ύϫʔμ΢ϯঢ়ଶ(PDN pin = “L”)·ͨ͸Ϧηο
τঢ়ଶ(RSTN1 bit = “0”)ʹͯ͠Լ͍͞ɻిݯON౳ͷϦηοτղআ࣌(PDN pin = “↑”)͸MCLK, LRCK1͕ೖྗ͞
ΕΔ·Ͱύϫʔμ΢ϯঢ়ଶͰ͢ɻ
ϚελϞʔυͰ͸ύϫʔμ΢ϯ࣌Ҏ֎͸֎෦ΫϩοΫ(MCLK)Λ͍ͩͯ͘͞͠څڙɻిݯON౳ͷϦηοτղ
আ࣌(PDN pin = “ˢ”)͸MCLK͕ೖྗ͞ΕΔ·Ͱύϫʔμ΢ϯঢ়ଶͰ͢ɻ
DFS1
0
0
1
DFS0
0
1
0
Sampling Speed (fs)
Normal Speed Mode
32kHz~48kHz
Double Speed Mode
64kHz~96kHz
Quad Speed Mode
120kHz~192kHz
Table 1.αϯϓϦϯάεϐʔυ (Manual Setting Mode)
Default
CKS1 CKS0
Normal
Double
0
0
256fs
128fs
0
1
384fs
192fs
1
0
512fs
256fs
1
1
256fs
256fs
Table 2.ϚελΫϩοΫೖྗप೾਺બ୒ (Master Mode)
Quad
128fs
128fs
128fs
128fs
Default
LRCK1
MCLK (MHz)
BICK1 (MHz)
fs
256fs
384fs
512fs
64fs
32.0kHz
8.1920
12.2880
16.3840
2.0480
44.1kHz
48.0kHz
11.2896
12.2880
16.9344
18.4320
22.5792
24.5760
2.8224
3.0720
Table 3.γεςϜΫϩοΫྫ (Normal Speed Mode @Manual Setting Mode)
LRCK1
MCLK (MHz)
BICK1 (MHz)
fs
128fs
192fs
256fs
64fs
88.2kHz 11.2896
16.9344
22.5792
5.6448
96.0kHz 12.2880
18.4320
24.5760
6.1440
Table 4.γεςϜΫϩοΫྫ (Double Speed Mode @Manual Setting Mode)
(஫:Double Speed Mode࣌ (DFS1=“0”, DFS0=“1”)ͷ128fsͱ192fsͰ͸,
ADC͸ࣗಈύϫʔμ΢ϯ͠·͢ɻ)
MS0339-J-00
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2004/09