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參數(shù)資料
| 型號： | AKD4564 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| 中文描述： | 16位編解碼器，配有ALC和麥克風/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 19/48頁 |
| 文件大?。?/td> | 382K |
| 代理商： | AKD4564 |
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ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 19 -
5. Polarity
Input signals from INTL/INTR, EXTL/EXTR and BEEP1 pins are inverted and are output from ADC. Input signals
from LIN1/RIN1 and LIN2/RIN2 pins are non-inverted and output from ADC.
Signal Path
INTL/INTR
à
ADC
EXTL/EXTR
à
ADC
BEEP1
à
ADC
LIN1/RIN1
à
ADC
LIN2/RIN2
à
ADC
Table 2. Polarity of Recording Block
6. MONO Mode
When MONO bit is “1”, the recording blocks in the AK4564 becomes MONO mode. The Pre-Amp, MIX1-Amp,
MIX2-Amp and ADC analog block of the right channel are powered-down. And the right channel data of ADC is the
same as the left channel data of ADC. When changing MONO mode, the ADC should be powered-up by changing
ADC bit = “1” after MONO bit is changed to “1”. Because click noise may occur when MONO bit is changed during
ADC normal operation.
n
BEEP2 Input
When BEEP2H bit is “1”, the input signal from BEEP2 pin is output to Headphone-Amp. When BEEP2S bit is “1”, the
input signal from BEEP2 pin is output to Speaker-Amp.
This signal level can be adjusted by an external resistor (Ri). An internal resistor value (Rf) is 20k
±
30%
. In
Speaker-Amp, the signal level is gained to +4.6dB internally.
Polarity
Inverted
Inverted
Inverted
Non-inverted
Non-inverted
BEEP2
-
+
Rf = 20k
Ri
Figure 14. Block diagram of BEEP2 inputs
n
MUTE Function
When MUTE pin is “H”, the output signals of LINEOUT, Headphone and Speaker-Amp are muted, and become VCOM
or HVCM voltage. The switches of AOUT1, AOUT2, HPDAC, HPMIX, BEEP2H, ALCS and BEEP2S become “OFF”
at the same time.
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| AKD4569 | 制造商:AKM 制造商全稱:AKM 功能描述:Evaluation board Rev.A for AK4569 |
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