AK4589 Datasheet, PDF (48/76 Pages) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR

ASAHI KASEI
[AK4589]

όΠϑΣʔζग़ྗ

TX0/1 pin͔Β͸ɺRX͔Βड৴ͨ͠σʔλͷεϧʔग़ྗ͔ɺDAUX2͔ΒͷσʔλΛIEC60958ϑΥʔϚοτʹม
ͨ͠׵ग़ྗͷ͍ͣΕ͔Λग़ྗͰ͖·͢ɻ͜ͷબ୒͸DIT bitͰߦ͍·͢ɻTX0ͷεϧʔग़ྗ͸OPS00, 01, 02Ͱɺ
TX1ͷεϧʔग़ྗ͸OPS10, 11, 12 bitͰ֤ʑ8ೖྗ͔Βબ୒ͯ͠TX0/1 pinʹεϧʔग़ྗͰ͖·͢ɻDAUX2σʔλ
Λग़ྗ͢Δ৔߹ʹ͸ɺV bit͸VIN pinͰίϯτϩʔϧͰ͖·͢(Figure 22)ɻC bit͸࠷ॳͷ5ByteΛϨδελʹͯί
ϯτϩʔϧͰ͖·͢ɻbit0= “0”(consumer mode)ͷ৔߹ɺbit20-23(Audio channel)͸௚઀ॻ͖ࠐΈෆՄͰ͢ɻCT20
bit͕ “1”ͷ࣌͸εςϨΦग़ྗʹରԠ͠ɺSub frame 1͸ “1000”ʢࠨνϟϯωϧʣ, Sub frame 2͸ “0100”ʢӈνϟ
ϯωϧʣ͕ࣗಈతʹઃఆ͞Ε·͢ɻCT20 bit͕ “0”ͷ࣌͸ “0000”ʢࢦఆͳ͠ʣʹͳΓ·͢ɻ·ͨU bit͸UDIT bit
ʹΑΓ2௨Γͷத͔Βબ୒Ͱ͖·͢ɻUDIT bit= “0”Ͱ “0”ݻఆɺUDIT bit = “1”ͰϦΧόϦʔͨ͠U bitΛͦͷ·
·DIT͔Βग़ྗ͠·͢ʢU bitͷDIR-DITϧʔϓϞʔυʣɻ͜ͷϞʔυ͸PLL͕ϩοΫ࣌ͷϚελϞʔυͷΈରԠ
͠·͢ɻ
OPS02
OPS01
OPS00
Output Data
0
0
0
RX0
0
0
1
RX1
0
1
0
RX2
0
1
1
RX3
1
0
0
RX4
1
0
1
RX5
1
1
0
RX6
1
1
1
RX7
Table 26. εϧʔग़ྗσʔλબ୒ (TX0)
Default
DIT
OPS12
OPS11
OPS10
Output Data
0
0
0
0
RX0
0
0
0
1
RX1
0
0
1
0
RX2
0
0
1
1
RX3
0
1
0
0
RX4
0
1
0
1
RX5
0
1
1
0
RX6
0
1
1
1
RX7
1
x
x
x
DAUX2
Default
Table 27. εϧʔग़ྗσʔλબ୒ (TX1)
LRCK2
(except I²S)
LRCK2
(I²S)
DAUX2
VIN
L0
R0
L1
R1
R191 L0
R0
L1
Figure 22. DAUX2, VINೖྗλΠϛϯά
MS0339-J-00
- 48 -
2004/09