參數(shù)資料
型號(hào): AK4631
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: 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
文件頁數(shù): 39/69頁
文件大小: 568K
代理商: AK4631
ASAHI KASEI
[AK4631]
MS0317-J-01
2004/11
- 39 -
SPK – ALC
ALC2 bit = “1”
(MIN pin)
Figure 36
~
Figure 39
ALC2
“1”, SVDD=5V)
7.1dBV
0.5dB
ALC2
ALC2
ALC
ALC2
typ. 24k
VCOM
ALC2
SVDD
–7.1dBV(@SPKG1 bit = “0”, SVDD=3.3V
ALC2
ALC2
SPKG1 bit =
ALC2
250
μ
s (=2/fs@fs=8kHz)
1dB
ALC2
ALC2
–9.1dBV(@SPKG1 bit = “0”, SVDD=3.3V
ALC2
SPKG1 bit = “1”,
SVDD=5V)
–9.1dBV
–7.1dBV
PMSPK bit
RFS5-0 bits
ALC2
“0”
“1”
(512/fs=64ms @ fs=8kHz, ROTM bit = “0”)
ALC2
“–3.5dB
ROTM bit
RFS5-0 bits
ALC2
ALC2
“–2dB”
PMSPK = “0”
ALC2
Disable
ALC2
–3.5dB
(MIN
SPP/SPN)
Table 22
ALC2
ALC2
–7.1dBV
2/fs = 250
μ
s
2/fs = 125
μ
s
–9.1dBV
512/fs = 64ms
512/fs = 32ms
(Timeout=512/fs)
1dB step
fs=8kHz
fs=16kHz
Table 21. Limiter /Recovery of ALC2 (ROTM bit = “0”)
ATT/GAIN
0.5dB step
SPKG1-0 bits
00
01
10
11
+4.4dB
+6.4dB
+10.6dB
+12.7dB
Table 22. ALC2 OFF
SPK-Amp(Full-differential
)
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