AK4544A Datasheet, PDF (19/35 Pages) Asahi Kasei Microsystems – AC97 MULTIMEDIA AUDIO CODEC WITH SRC

[ASAHI KASEI]
[AK4544A]
nMixer Registers
Each Register is 16 bit wide.
Note: The AK4544A outputs “valid” 0000h if the controller reads an unused or invalid register address.
Reg Name
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Num
00h Reset
0
“0” “1” “0” “1” “1” “0” “1” “0” “1” “0” “1” “0” “0” “0” “0”
02h Master Volume
Mute X ML5 ML4 ML3 ML2 ML1 ML X
X MR5 MR4 MR3 MR2 MR1 MR0
0
04
LNLVL Volume
Mute X ML5 ML4 ML3 ML2 ML1 ML X
X MR5 MR4 MR3 MR2 MR1 MR0
0
06h Master Volume Mono Mute X
X
X
X
X
X
X
X
X MR5 MR4 MR3 MR2 MR1 MR0
0Ah PC_BEEP Volume
Mute X
X
X
X
X
X
X
X
X
X PV3 PV2 PV1 PV0 X
0Ch Phone Volume
Mute X
X
X
X
X
X
X
X
X
X GN4 GN3 GN2 GN1 GN0
0Eh Mic Volume
Mute X
X
X
X
X
X
X
X 20dB X GN4 GN3 GN2 GN1 GN0
10h Line In Volume
Mute X
X GL4 GL3 GL2 GL1 GL0 X
X
X GR4 GR3 GR2 GR1 GR0
12h CD Volume
Mute X
X GL4 GL3 GL2 GL1 GL0 X
X
X GR4 GR3 GR2 GR1 GR0
14h Video Volume
Mute X
X GL4 GL3 GL2 GL1 GL0 X
X
X GR4 GR3 GR2 GR1 GR0
16h Aux Volume
Mute X
X GL4 GL3 GL2 GL1 GL0 X
X
X GR4 GR3 GR2 GR1 GR0
18h PCM Out Volume
Mute X
X GL4 GL3 GL2 GL1 GL0 X
X
X GR4 GR3 GR2 GR1 GR0
1Ah Record Select
X
X
X
X
X SL2 SL1 SL0 X
X
X
X
X SR2 SR1 SR0
1Ch Record Gain
Mute X
X
X GL3 GL2 GL1 GL0 X
X
X
X GR3 GR2 GR1 GR0
20h General Purpose
POP DFC 3D X
X
X MIX MS LPBK X
X
X
X
X
X
X
22h 3D Control
X
X
X
X
X
X
X
X
X
X
X
X DP3 DP2 DP1 DP0
26h Powerdown Ctrl/Stat
PR7 PR6 PR5 PR4 PR3 PR2 PR1 PR0 X
X
X
X REF ANL DAC ADC
28h Extended Audio ID
ID1 ID0 X
X
X
X AMAP X
X
X
X
X
XX
X VRA
2Ah Ext’d audio Stat/Ctrl
X
X
XX
X
X
X
X
X
X
X
X
X
X
X VRA
2Ch PCM Front DAC Rate SR15 SR14 SR13 SR12 SR11 SR10 SR9 SR8 SR7 SR6 SR5 SR4 SR3 SR2 SR1 SR0
32h PCM LR ADC Rate
SR15 SR14 SR13 SR12 SR11 SR10 SR9 SR8 SR7 SR6 SR5 SR4 SR3 SR2 SR1 SR0
7Ch Vendor ID1
“0” “1” “0” “0” “0” “0” “0” “1” “0” “1” “0” “0” “1” “0” “1” “1”
7Eh Vendor ID2(AK4544A) “0” “1” “0” “0” “1” “1” “0” “1” “0” “0” “0” “0” “0” “1” “1” “0”
*) Vender ID of AKM is “AKM” :This ID has been approved by Intel.
*) The AK4544A outputs “X” bits as “0”.
*) A write on “Invalid” registers will not affect operation of the AK4544A.
*) ANL, DAC, ADC Bit in register 26h are all “0” following cold reset. When each section is ready for normal
operation, the coresponding bit becomes “1”. The Powerdown register(26h) is not affected by a write to Reset
register(0h). See “Mixer Registers” in AC’97 specification for details. Vref is controlled only by PR3.
Default
2D50h
8000h
8000h
8000h
0000h
8008h
8008h
8808h
8808h
8808h
8808h
8808h
0000h
8000h
0000h
0000h
Na
X201h
0000h
BB80h
BB80h
414Bh
4D06h
nReset Register (Index 00h)
<Write>
When any value is written to the AK4544A, all registers including 2Ah, 2Ch, and 32h in the AK4544A except for 26h
Powerdown/Control Register are reset to default values. The value of this register is not altered.
<Read>
Reading this register returns “2D50h”composed of the ID code of the part, a code for the type of 3D enhancement, 18
bit ADC/DAC resolution, and a code for True Line Level Out.
*Setting D14 – D10 “01011” means AKM 3D enhancement which is registered in Audio Codec ’97 Component
Specification Rev 1.03 and 2.1 .
*Setting D8 “1” means 18bit ADC resolution and D6”1” means 18bit DAC resolution.
*Setting D4 “1” means True Line Level Out is supported with Volume Control(Index 04h).
n Play Master Volume Registers (Index 02h,06h) and LINVL(True Line Level Out) Volume Register(Index 04h)
The following table shows the relationship between bits and the attenuation value with step size of 1.5dB. The
AK4544A has a range of 0dB to –46.5dB. The AK4544A does not support the optional MX5 bit.
The AK4544A detects when MX5 is set and set all 5 LSBs to 1s. Example: When the driver writes a “01xxxxx” the AK4544A
interpret that as “0011111”. When this register is read, the return value is “0011111”.
Mute _{MX5 MX4 MX3 MX2 MX1 MX0}
Att.
0
0
0
0
0
0
0
0dB
0
0
0
0
0
0
1
-1.5dB
0
0
0
0
0
1
0
-3.0dB
0
0
0
0
0
1
1
-4.5dB
-------------------------------------------------------------------------
0
0
1
1
1
1
0 -45.0dB
0
0
1
1
1
1
1 -46.5dB
-------------------------------------------------------------------------
0
1
X
X
X
X
X -46.5dB
-------------------------------------------------------------------------
1
X
X
X
X
X
X
Mute
<MS0026-E-00>
- 19 -
2000/04