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參數(shù)資料
| 型號： | AK4541 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | AC’97 Rev 2.1 Multimedia Audio CODEC |
| 中文描述： | AC\u0026#39;97音效活2.1多媒體音頻編解碼器 |
| 文件頁數(shù)： | 24/31頁 |
| 文件大?。?/td> | 383K |
| 代理商： | AK4541 |
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[ASAHI KASEI]
[AK4541]
<M0047-E-01>
1999/01
- 24 -
The next figure illustrates a state when all the mixers should work with the static volume settings that are
contained in their associated registers. This is used when the user is playing a CD (or external LINE_IN source)
through the AC 97 codec to the speakers but has most of the system in a low power mode. The procedure for this
follows the previous except that the analog mixer is never shut down.
Normal
ADCs off
PR0
DACs off
PR1
Digital
I/ F
off
PR4
PR0=1
PR1=1
PR4=1
Shut off
AC-Link
Warm Reset
PR1=0
&
DAC=1
PR0=0
&
ADC=1
AK4541 Powerdown/Powerup flow with analog still alive
n
Powerdown/Powerup sequence of multiple codec configuration
There can be up to 4 Codecs on the extended AC-link. Multiple Codec AC-link implementations must run off a
common BIT_CLK. The Primary Codec generates the master AC-link BIT_CLK for both the AC 97 Digital
Controller and any Secondary Codecs. The AK4541 may be used as a master or slave in any systems using more
than one codec.
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN0
SDATA_IN1
SDATA_IN2
SDATA_IN3
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN
Digital Controller
AC ‘97
AC ‘97 or MC ‘97
Optional 4th AC ‘97
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN
SYNC
BIT_CLK
SDATA_OUT
RESET#
SDATA_IN
Multiple Codec Example
Under the multiple codec circumstances, there is no restriction on setting PR0(ADC), PR1(DAC),
PR2(Mixer), PR6(LNLVL_OUT) and PR7(EAPD) to 1 or 0.
As suggested in the AC97 Specification Rev2.1, the AC-Link Powerdown(PR4) and Vref
Powerdown(PR5=1) under the Multiple codec configuration are NOT recommended in order to continue
supplying BIT_CLK to the Secondary codecs.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4543 | AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543VQ | AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4544A | AC97 MULTIMEDIA AUDIO CODEC WITH SRC |
| AK4544AVQ | CABLE ASSEMBLY; BNC MALE TO N MALE; 50 OHM, RG223/U COAX, DOUBLE SHIELDED; 36" CABLE LENGTH |
| AK4544 | AC97 MULTIMEDIA AUDIO CODEC WITH SRC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4541VQ | 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543 | 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543VQ | 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4544 | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 MULTIMEDIA AUDIO CODEC WITH SRC |
| AK4544A | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 MULTIMEDIA AUDIO CODEC WITH SRC |
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