參數(shù)資料
型號(hào)： AK4537
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16-Bit ツヒ Stereo CODEC with MIC/HP/SPK-AMP
中文描述： 16位ツヒ立體聲編解碼器與麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 53/76頁
文件大?。?/td> 576K
代理商： AK4537
ASAHI KASEI
[AK4537]
MS0202-E-04
2005/04
- 53 -
Addr
08H
Register Name
Timer Select
R/W
Default
D7
0
RD
0
D6
D5
ZTM1
R/W
0
D4
ZTM0
R/W
0
D3
D2
D1
LTM1
R/W
0
D0
LTM0
R/W
0
ROTM
R/W
0
WTM1
R/W
0
WTM0
R/W
0
LTM1-0: ALC1 limiter operation period at zero crossing disable (ZELM bit = “1”) (see Table 25)
The IPGA value is changed immediately. When the IPGA value is changed continuously, the change is done
by the period specified by the LTM1-0 bits. Default is “00” (0.5/fs).
ALC1 Limiter Operation Period
8kHz
16kHz
63
μ
s
31
μ
s
125
μ
s
63
μ
s
250
μ
s
125
μ
s
500
μ
s
250
μ
s
Default
LTM1
LTM0
44.1kHz
11
μ
s
23
μ
s
45
μ
s
91
μ
s
0
0
1
1
0
1
0
1
0.5/fs
1/fs
2/fs
4/fs
Table 25. ALC1 Limiter Operation Period at zero crossing disable (ZELM bit = “1”)
WTM1-0: ALC1 Recovery Waiting Period (see Table 26)
A period of recovery operation when any limiter operation does not occur during the ALC1 operation.
Default is “00” (128/fs).
ALC1 Recovery Operation Waiting Period
8kHz
16kHz
16ms
8ms
32ms
16ms
64ms
32ms
128ms
64ms
Table 26. ALC1 Recovery Operation Waiting Period
Default
WTM1
WTM0
44.1kHz
2.9ms
5.8ms
11.6ms
23.2ms
0
0
1
1
0
1
0
1
128/fs
256/fs
512/fs
1024/fs
ZTM1-0: Zero crossing timeout for the write operation by the
μ
P, ALC1 recovery, and zero crossing enable (ZELM
bit = “0”) of the ALC1 operation. (see Table 27)
When the IPGA of each L/R channels perform zero crossing or timeout independently, the IPGA value is
changed by the
μ
P WRITE operation, ALC1 recovery operation or ALC1 limiter operation (ZELM bit = “0”).
Default is “00” (128/fs).
Zero Crossing Timeout Period
8kHz
16kHz
16ms
8ms
32ms
16ms
64ms
32ms
128ms
64ms
Table 27. Zero Crossing Timeout Period
Default
ZTM1
ZTM0
44.1kHz
2.9ms
5.8ms
11.6ms
23.2ms
0
0
1
1
0
1
0
1
128/fs
256/fs
512/fs
1024/fs
ROTM:
0: 2048/fs (Default)
1: 512/fs
Period time for ALC2 Recovery operation
相關(guān)PDF資料
PDF描述
AK4537VN 16-Bit ツヒ Stereo CODEC with MIC/HP/SPK-AMP
AK4538 16Bit DS CODEC with MIC/HP/SPK-AMP
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AK4537VN 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP
AK4537VNP-L 制造商:AKM Semiconductor Inc 功能描述:AK4537VNP-L
AK4538 制造商:AKM 制造商全稱:AKM 功能描述:16Bit DS CODEC with MIC/HP/SPK-AMP
AK4538VN 制造商:AKM 制造商全稱:AKM 功能描述:16Bit DS CODEC with MIC/HP/SPK-AMP
AK4541 制造商:AKM 制造商全稱:AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC
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