AK4125 Datasheet, PDF (12/26 Pages) Asahi Kasei Microsystems – 192kHz / 24Bit High Performance Asynchronous SRC

ASAHI KASEI
[AK4125]
ಈ࡞આ໌
„ ೖྗϙʔτͷγεςϜΫϩοΫͱΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτ


ೖྗϙʔτ͸ϚελϞʔυͼٴεϨʔϒϞʔυͰಈ࡞ՄೳͰ͢ɻεϨʔϒϞʔυͷ৔߹ɺ಺෦ಈ࡞༻ͷΫϩ
οΫ͸ILRCK͔Β಺ଂPLLʹΑΓੜ੒͞ΕΔϞʔυ(Table 2ͷMode 0 ∼ 2)ͱIBICK͔Β಺ଂPLLʹΑΓੜ੒͞
ΕΔϞʔυ(Table 2ͷMode 4 ∼ 7)͕͋Γ·͢ɻϚελϞʔυͷ৔߹ɺ಺෦ಈ࡞༻ͷΫϩοΫ͸IMCLKΛ࢖༻͠
ͯੜ੒͞Ε·͢(Table 2ͷMode 8 ∼ 15)ɻεϨʔϒϞʔυͷ৔߹͸MCLKΛೖྗ͢Δඞཁ͸͋Γ·ͤΜɻϚε
λ/εϨʔϒͼٴPLLϞʔυͷબ୒͸IDIF2-0 pinͼٴPLL2-0 pinʹΑΓߦ͍·͢ɻ֤ϐϯ͸PDN pin = “L”தʹઃ
ఆͯ͠Լ͍͞ɻ
ೖྗϙʔτͷΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτ͸IDIF2-0 pinͰઃఆ͠·͢ɻશϞʔυͱ΋MSBϑΝʔ
ετɺ2’sίϯϓϦϝϯτͷσʔλϑΥʔϚοτͰɺSDTI͸IBICKͷ্ཱ͕ͪΓͰϥον͞Ε·͢ɻΦʔσΟ
ΦΠϯλϑΣʔεϑΥʔϚοτͷมߋ͸PDN pin = “L”தʹઃఆͯ͠Լ͍͞ɻόΠύεϞʔυ࣌͸ɺ
IBICK=OBICK=64fsݻఆͰ͢ɻ
Mode
0
1
2
3
4
5
6
7
IDIF2
L
L
L
L
H
H
H
H
IDIF1
L
L
H
H
L
L
H
H
IDIF0
SDTI Format
ILRCK IBICK IBICK Freq
L
16bit, LSB justified
≥ 32fsi
H
20bit, LSB justified
≥ 40fsi
L 24/20bit, MSB justified Input Input
≥ 48fsi
H 24/16bit, I²S Compatible
≥ 48fsi or 32fsi
L
24bit, LSB justified
≥ 48fsi
H
L
24bit, MSB justified
24bit, I²S Compatible
Output Output
64fsi
64fsi
H
Reserved
Table 1. Input Audio Interface Format (Input PORT)
Master / Slave
Slave
Master
Mode Master / Slave
0
1
2
Slave
IMCLK = DVSS
3
IBICK = Input
4
ILRCK = Input
5
6
7
8
9
10
Master
11 IMCLK = Input
12 ^{IBICK = Output}
13 ^{ILRCK = Output}
14
15
PLL2
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
PLL1 PLL0 ILRCK Freq IBICK Freq IMCLK
L
L
H
L
H
L
8k ∼ 96kHz
8k ∼ 216kHz
16k ∼ 216kHz
(Note 1)
Depending on
IDIF2-0
Not
needed.
(Note 4)
H
H
Reserved
L
L
H
L
H
L
8k ∼ 216kHz
(Note 2)
32fsi (Note 3)
64fsi
128fsi
Not
needed.
(Note 4)
H
H
64fsi
L
L
8k ∼ 216kHz
128fsi
L
H
8k ∼ 108kHz
256fsi
H
L
8k ∼ 54kHz
512fsi
H
H
8k ∼ 216kHz
64fsi
128fsi
L
L
8k ∼ 216kHz
192fsi
L
H
8k ∼ 108kHz
384fsi
H
L
8k ∼ 54kHz
768fsi
H
H
8k ∼ 216kHz
192fsi
Table 2. PLL Setting (Input PORT)
SMUTE
(Note 5)
Manual
Semi-Auto
Manual
Semi-Auto
Manual
Semi-Auto
Manual
Semi-Auto
Note 1. FILT pinʹ઀ଓ͞ΕΔRͱCͷ஋ʹΑΓɺPLLͷϩοΫϨϯδ͕มΘΓ·͢ɻৄࡉ͸ʮPLL༻ϧʔϓ
ϑΟϧλʯͷ߲Λࢀরͯ͠Լ͍͞ɻ
Note 2. IBICK͸ɺΫϩοΫ੾ସ࣌Ҏ֎͸ৗʹ࿈ଓͯͯ͠͠څڙԼ͍͞ɻ
Note 3. IBICK = 32fsi͸16bit LSB justifiedͱ16bit I²S CompatibleͷΈରԠ͠·͢ɻ
Note 4. DVSSݻʹఆͯ͠Լ͍͞ɻ
Note 5. SMUTEͷManualϞʔυͱSemi-AutoϞʔυʹ͍ͭͯ͸ʮιϑτϛϡʔτػೳʯͷ߲Λࢀরͯ͠Լ͍͞ɻ
MS0379-J-01
- 12 -
2005/05