參數(shù)資料
型號(hào)： AK4665AEN
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 20-Bit Stereo CODEC with MIC/HP-AMP
中文描述： 20位立體聲編解碼器麥克風(fēng)/惠普腺苷
文件頁(yè)數(shù)： 33/52頁(yè)
文件大?。?/td> 541K
代理商： AK4665AEN
ASAHI KASEI
[AK4665A]
MS0440-E-01
2006/05
- 33 -
Transition Time
The power-up/down time of HP-Amp at the change of PMHPL/R bits is set by PUT1-0 bits (Table 38).
The mute ON/OFF timing of HP-Amp, the ON/OFF timing of output path for HPL/HPR and LOUT/ROUT, and the gain
changing at ALC2 recovery operation are changed by the soft transition respectively. The transition time is set by PTS1-0
bits (Table 39). The register value of same address must be changed by an interval more than transition time.
The Enable/Disable for the soft transition is set by MOFF0, MOFF8 and MOFF9 bits (Table 37). The soft transition is
disabled while these bits are “1”, and ON/OFF is done immediately.
As shown in Table 37, if the soft transition is enabled, the register value of same address must be changed by an interval
more than transition time. The write operation is ignored if the same values are written as the previous write operation.
Address
Register Name
PUT1-0 bits
00H
PMHPL, PMHPR bits
08H
DACHL, LINHL, MINHL, DACHR, RINHR, MINHR,
HPMTN bits
PTS1-0 bits
09H
DACL, LINL, RINR, MINL, DACR, MINR bits
Table 37. Registers with Transition Time
Power-up/down Time
FS3
FS2
FS1
FS0
PUT=00
(Default)
0
0
0
0
770/fs (17.5ms)
1538/fs (34.9ms)
0
0
0
1
514/fs (16.1ms)
1026/fs (32.1ms)
0
0
1
0
770/fs (16.1ms)
1538/fs (32.1ms)
1
0
0
0
386/fs (17.5ms)
770/fs (34.9ms)
1
0
0
1
258/fs (16.1ms)
514/fs (32.1ms)
1
0
1
0
386/fs (16.1ms)
770/fs (32.1ms)
1
1
0
0
194/fs (17.6ms)
386/fs (35.0ms)
1
1
0
1
130/fs (16.3ms)
258/fs (32.3ms)
1
1
1
0
194/fs (16.2ms)
386/fs (32.2ms)
Others
Table 38. HP-Amp Power-up/down Time
Enable/Disable
MOFF0 bit
MOFF8 bit
MOFF9 bit
PUT=01
PUT=10
PUT=11
3074/fs (69.7ms)
2050/fs (64.1ms)
3074/fs (64.1ms)
1538/fs (69.8ms)
1026/fs (64.1ms)
1538/fs (64.1ms)
770/fs (69.8ms)
514/fs (64.3ms)
770/fs (64.2ms)
N/A
6146/fs (139ms)
4098/fs (128ms)
6146/fs (128ms)
3074/fs (139ms)
2050/fs (128ms)
3074/fs (128ms)
1538/fs (140ms)
1026/fs (128ms)
1538/fs (128ms)
Default
Transition Time
PTS=01
FS3
FS2
FS1
FS0
PTS=00
(Default)
768/fs (17.4ms)
512/fs (16.0ms)
768/fs (16.0ms)
384/fs (17.4ms)
256/fs (16.0ms)
384/fs (16.0ms)
192/fs (17.4ms)
128/fs (16.0ms)
192/fs (16.0ms)
PTS=10
PTS=11
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
Others
0
0
1
0
0
1
0
0
1
0
1
0
0
1
0
0
1
0
1536/fs (34.8ms)
1024/fs (32.0ms)
1536/fs (32.0ms)
768/fs (34.8ms)
512/fs (32.0ms)
768/fs (32.0ms)
384/fs (34.8ms)
256/fs (32.0ms)
384/fs (32.0ms)
3072/fs (69.7ms)
2048/fs (64.0ms)
3072/fs (64.0ms)
1536/fs (69.7ms)
1024/fs (64.0ms)
1536/fs (64.0ms)
768/fs (69.7ms)
512/fs (64.0ms)
768/fs (64.0ms)
N/A
6144/fs (139ms)
4096/fs (128ms)
6144/fs (128ms)
3072/fs (139ms)
2048/fs (128ms)
3072/fs (128ms)
1536/fs (139ms)
1024/fs (128ms)
1536/fs (128ms)
Default
Table 39. HP-Amp Mute ON/OFF, Path ON/OFF & ALC2 Recovery Transition Time
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