AK4125 Datasheet, PDF (14/26 Pages) Asahi Kasei Microsystems – 192kHz / 24Bit High Performance Asynchronous SRC

ASAHI KASEI
[AK4125]
ILRCK
012
IBICK(64fs)
89
24
31 0 1 2
89
24
SDTI(i)
Don't Care 23
8
23:MSB, 0:LSB
1 0 Don't Care 23
8
Lch Data
Figure 5. Mode 4 Timing
Rch Data
31 0 1
10
„ ग़ྗϙʔτͷγεςϜΫϩοΫͱΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτ
ग़ྗϙʔτ͸ϚελϞʔυͼٴεϨʔϒϞʔυͰಈ࡞ՄೳͰ͢ɻεϨʔϒϞʔυͷ৔߹͸MCLKΛೖྗ͢Δ
ඞཁ͸͋Γ·ͤΜɻϚελ/εϨʔϒͼٴSRCόΠύεϞʔυͷબ୒͸CMODE2-0 pinʹΑΓߦ͍·͢ɻ֤ϐϯ
͸PDN pin = “L”தʹઃఆͯ͠Լ͍͞ɻ
ग़ྗϙʔτͷΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτ͸ODIF1-0 pinɺOBIT1-0 pinʹͯઃఆ͠·͢ɻશϞʔυ
ͱ΋MSBϑΝʔετɺ2’sίϯϓϦϝϯτͷσʔλϑΥʔϚοτͰɺSDTO͸OBICKͷཱͪԼ͕ΓͰग़ྗ͞Ε
·͢ɻΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτͷมߋ͸PDN pin = “L”தʹઃఆͯ͠Լ͍͞ɻόΠύεϞʔυ
࣌͸ɺIBICK=OBICK=64fsݻఆͰ͢ɻ
Mode
0
1
2
3
4
5
6
7
CMODE2
L
L
L
L
H
H
H
H
CMODE1 CMODE0 Master / Slave
OMCLK
L
L
Master
256fso
L
H
Master
384fso
H
L
Master
512fso
H
H
Master
768fso
L
L
Slave
Not used. Set to DVSS.
L
H
Master
128fso
H
L
Master
192fso
H
H
Master (Bypass) Not used. Set to DVSS.
Table 3. Master/Slave Control (Output PORT)
fso
8k ∼ 108kHz
8k ∼ 108kHz
8k ∼ 54kHz
8k ∼ 54kHz
8k ∼ 216kHz
8k ∼ 216kHz
8k ∼ 216kHz
8k ∼ 216kHz
Mode ODIF1 ODIF0 SDTO Format
0
L
L
LSB justified
1
L
H
(Reserved)
2
H
L
MSB justified
3
H
H
I²S Compatible
Table 4. Output Audio Interface Format 1 (Output PORT)
Mode Master / Slave
0
1
Slave
CMODE2-0 =
2
“HLL”
3
4
Master
5 _{CMODE2-0 =}
6
“HLL”Ҏ֎
7
OBIT1
OBIT0
SDTO
OLRCK
OBICK
OBICK Frequency
MSB justified, I²S LSB justified
L
L
16bit
≥ 32fso
L
H
18bit
Input
Input
H
L
20bit
≥ 36fso
≥ 40fso
64fso
H
H
24bit
≥ 48fso
L
L
16bit
L
H
H
L
18bit
20bit
Output
Output
64fso
H
H
24bit
Table 5. Output Audio Interface Format 2 (Output PORT)
MS0379-J-01
- 14 -
2005/05