AK4612EQ Datasheet, PDF (50/68 Pages) Asahi Kasei Microsystems – 6/8-Channel Audio CODEC

[AK4612]
■ γϦΞϧίϯτϩʔϧΠϯλϑΣʔε
AK4612ͷ֤ػೳ͸ϐϯ·ͨ͸ϨδελͰઃఆͰ͖·͢ɻϨδελ΁ͷॻ͖ࠐΈํࣜ͸2छྨ(4ઢγϦΞϧɺI²C
όε)͋Γ·͢ɻνοϓΞυϨε͸CAD0, CAD1 pinͷઃఆͰܾఆ͞Ε·͢ɻPDN pinΛ “L” ʹ͢Δͱ಺෦Ϩδ
ελ஋͸ॳظԽ͞Ε·͢ɻRSTN bitʹ “0” Λॻ͖ࠐΉͱ಺෦λΠϛϯάճ࿏͕Ϧηοτ͞Ε·͢ɻୠ͠ɺ͜
ͷ࣌Ϩδελͷ಺༰͸ॳظԽ͞Ε·ͤΜɻ
* PDN = “L”࣌͸ίϯτϩʔϧϨδελ΁ͷॻ͖ࠐΈ͸Ͱ͖·ͤΜɻ


(1) 4ઢγϦΞϧίϯτϩʔϧϞʔυ (I2C pin = “L”)
Ϩδελઃఆ͸4ઢࣜγϦΞϧI/F pin(CSN, CCLK, CDTI, CDTO)Ͱॻ͖ࠐΈ·ͨ͸ಡΈग़͠Λߦ͍·͢ɻI/F্
ͷσʔλ͸Chip address (2bits, CAD0, CAD1 pinͰઃఆ), Read/Write (1bit), Register address (MSB first, 5bits) ͱ
Control Data (MSB first, 8bits)Ͱߏ੒͞Ε·͢ɻσʔλૹ৴ଆ͸CCLKͷ“↓”Ͱ֤ϏοτΛग़ྗ͠ɺड৴ଆ͸“↑”
ͰऔΓࠐΈ·͢ɻσʔλͷॻ͖ࠐΈ͸CSNͷ“↑”Ͱ༗ޮʹͳΓɺσʔλͷಡΈग़͠͸CSNͷ“↑”Ͱग़ྗ͕Hi-Z
ʹͳΓ·͢ɻ1ΞυϨε΁ͷॻ͖ࠐΈຖʹCSNΛҰ౓ “H”ʹ͍ͯͩ͘͠͞ɻCCLKͷΫϩοΫεϐʔυ͸5MHz
(max)Ͱ͢ɻPDN pin= “L”ͰϨδελͷ஋͸Ϧηοτ͞Ε·͢ɻ


CSN
CCLK _{“H” or “L”}
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
“H” or “L”
CDTI
WRITE
CDTO
“H” or “L”
C1 C0 R/W A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 ^{“H” or “L”}
Hi-Z
CDTI
READ
CDTO
“H” or “L”
C1 C0 R/W A4 A3 A2 A1 A0
“H” or “L”
Hi-Z
Hi-Z
D7 D6 D5 D4 D3 D2 D1 D0
C1 – C0: Chip Address (C1=CAD1, C0=CA0)
R/W: READ / WRITE (“1”: WRITE, “0”: READ)
A4 - A0: Register Address
D7 – D0: Control Data
Figure 49. ίϯτϩʔϧσʔλλΠϛϯά
MS1039-J-01
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2009/06