AK4544A 查看數據表（PDF） - Asahi Kasei Microdevices

零件编号

产品描述 (功能)

生产厂家

AK4544A

AC’ 97™ Multimedia Audio CODEC with SRC

Asahi Kasei Microdevices 

[ASAHI KASEI]

[AK4544A]

n PC Beep Register (Index 0Ah)

The following table shows the relationship between bits and the attenuation value. The attenuation step is 3dB with

a range of 0 to –45dB. PC_BEEP of the AK4544A is 0dB at default state.

The PC Beep is routed to L & R Line outputs directly when AK4544A is in a RESET State(Reset# is “L”) or when the mixer is

powerdown with Vref on(PR2=”1” and PR3=”0”). The PC BEEP isn’t routed to True Line Level Out under these states. This is so

that Power on Self Test(POST) codes can be heard by the user in case of a hardware problem with the PC. After Reset# goes “H”,

direct PC beep pass through becomes OFF.

Mute PV3 PV2 PV1 PV0

Att.

0

0

0

0

0

0dB

0

0

0

0

1

-3.0dB

0

0

0

1

0

-6.0dB

--------------------------------------------------------------

0

1

1

1

1 -45.0dB

1

X

X

X

X

Mute

n Analog Mixer Input Gain Registers (Index 0Ch-18h)

The following table shows the relationship between bits and the gain/attenuation value. Attenuation step is 1.5dB

with a range of +12dB to –34.5dB.

Mute Gx4 Gx3 Gx2 Gx1 Gx0

Att.

0

0

0

0

0

0

+12dB

0

0

0

0

0

1 +10.5dB

-----------------------------------------------------------------------

0

0

1

0

0

0

0dB

0

0

1

0

0

1

-1.5dB

-----------------------------------------------------------------------

0

1

1

1

1

0 -33.0dB

0

1

1

1

1

1 -34.5dB

1

X

X

X

X

X

Mute

n Record Select Control Register (Index 1Ah)

SR2 SR1 SR0

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

1

0

1

1

1

0

1

1

1

Att.

Mic

CD In (R)

Video In (R)

Aux In (R)

Line In (R)

Stereo Mix (R)

Mono Mix

Phone

<MS0026-E-00>

- 20 -

2000/04

Share Link: