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參數(shù)資料
| 型號： | AK4562 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | LOW POWER 20BIT CODEC WITH PGA |
| 中文描述： | 低功耗20位編解碼器美巡賽 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大小： | 167K |
| 代理商： | AK4562 |
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ASAHI KASEI
[AK4562]
MS0031-E-00
2000/05
- 13 -
LRCK
BCLK(64fs)
SDTO(o)
0
1
2
8
9
10
20
21
31
0
1
2
8
9
10
20
21
31
0
19
1
18
0
19 18
12
11 10
0
19
SDTI(i)
1
22
0
23
12
11
1
22
0
23
12
11
SDTO-19:MSB, 0:LSB; SDTI-23:MSB, 0:LSB
Lch Data
Rch Data
Don’t Care
Don’t Care
12
11 10
Figure 9. Audio Data Format (No.2)
LRCK
BCLK(64fs)
SDTO(o)
0
1
2
3
19
20
21
22
0
1
2
3
19
20
22
21
0
1
SDTI(i)
23
24
25
23
24
25
19
18
0
19 18
1
0
1
0
18
19
18
19
19:MSB, 0:LSB
Lch Data
Figure 10. Audio Data Format (No.3)
Rch Data
Don’t Care
Don’t Care
1
1
0
n
Digital High Pass Filter
The AK4562 has a Digital High Pass Filter (HPF) to cancel DC-offset in ADC and IPGA. The cut-off frequency of the
HPF is 3.4Hz at fs=44.1kHz. It also scales with the sampling frequency (fs).
n
System Reset & Offset Calibration
The AK4562 should be reset once by bringing PDN pin “L” after power-up. The control register values are initialized by
PDN “L”.
Offset calibration starts by PDN pin “L” to “H”. It takes 4128/fs to offset calibration cycle. During offset calibration, the
ADC digital data outputs of both channels are forced to a 2’s compliment “0”. Output data of settles data equivalent for
analog input signal after offset calibration. This cycle is not for DAC. IPGA and OPGA are set MUTE during offset
calibration and after offset calibration.
As a normal offset calibration may not be executed, nothing write at address 01H during offset calibration.
When offset calibration is executed once, the calibration memory is held even if each block is powered down (PM0 = “0”
or PM3 = “0”) by power management bits.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4562VN | LOW POWER 20BIT CODEC WITH PGA |
| AK4563A | Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4563AVF | Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4564 | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| AK4564VQ | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4562VN | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH PGA |
| AK4563A | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4563AVF | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4564 | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| AK4564VQ | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
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