參數(shù)資料
型號(hào)： AK4536VN
廠(chǎng)商： Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi)： Codec
英文描述： 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述： 16位單聲道編解碼器ALC的
文件頁(yè)數(shù)： 32/59頁(yè)
文件大?。?/td> 403K
代理商： AK4536VN
ASAHI KASEI
[AK4536]
MS0174-E-00
2002/09
- 32 -
n
Digital Output Volume
The AK4536 has a digital output volume (256 levels, 0.5dB step, Mute). The volume can be set by the DVOL7-0 bits. The
volume is included in front of a DAC block, a input data of DAC is changed from +12 to –115dB with MUTE. This volume
has a soft transition function. It takes 1061/fs (=133ms @ fs = 8kHz) from 00H to FFH.
DVOL7-0
00H
01H
02H
18H
FDH
FEH
FFH
Table 16. Digital Output Volume Code Table
n
BEEP Input
When the PMBP bit is set to “1”, the beep input is powered-up. And when the BEEPS bit is set to “1”, the input signal from
the BEEP pin is output to Speaker-Amp. When the BEEPA bit is set to “1”, the input signal from the BEEP pin is output to
the mono line output amplifier. The external resister Ri adjusts the signal level of BEEP input. The internal feedback
resistance is 20k
±
30%
.
Gain
+12.0dB
+11.5dB
+11.0dB
0dB
114.5dB
115.0dB
MUTE (
∞
)
Default
BEEP
-
+
Rf = 20k
Ri
Figure 7. Block Diagram of BEEP pin
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