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參數(shù)資料
| 型號(hào)： | AK4538 |
| 廠(chǎng)商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類(lèi)： | Codec |
| 英文描述： | 16Bit DS CODEC with MIC/HP/SPK-AMP |
| 中文描述： | 16位副編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁(yè)數(shù)： | 52/70頁(yè) |
| 文件大小： | 485K |
| 代理商： | AK4538 |
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ASAHI KASEI
[AK4538]
MS0198-E-01
2003/5
- 52 -
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 27)
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 27. ALC1 Limiter Operation Period at zero crossing disable (ZELM bit = “1”)
WTM1-0: ALC1 Recovery Waiting Period (see Table 28)
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
128/fs
16ms
256/fs
32ms
512/fs
64ms
1024/fs
128ms
Table 28. ALC1 Recovery Operation Waiting Period
Default
ZTM1
ZTM0
16kHz
8ms
16ms
32ms
64ms
44.1kHz
2.9ms
5.8ms
11.6ms
23.2ms
0
0
1
1
0
1
0
1
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 29)
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 29. 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: Period time for ALC2 Recovery operation
0: 2048/fs (Default)
1: 512/fs
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4538VN | 16Bit DS CODEC with MIC/HP/SPK-AMP |
| AK4541VQ | AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4541 | AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543 | AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543VQ | AC’97 Rev 2.1 Multimedia Audio CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4538VN | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:16Bit DS CODEC with MIC/HP/SPK-AMP |
| AK4541 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4541VQ | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
| AK4543VQ | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:AC’97 Rev 2.1 Multimedia Audio CODEC |
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