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參數(shù)資料
| 型號： | AK4645 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普腺苷 |
| 文件頁數(shù)： | 24/96頁 |
| 文件大小： | 821K |
| 代理商： | AK4645 |
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ASAHI KASEI
[AK4645]
MS0543-E-00
2006/09
- 24 -
OPERATION OVERVIEW
System Clock
There are the following four clock modes to interface with external devices (see Table 2 and Table 3).
Mode
PMPLL bit
PLL Master Mode (Note 38)
PLL Slave Mode 1
(PLL Reference Clock: MCKI pin)
PLL Slave Mode 2
(PLL Reference Clock: LRCK or BICK pin)
EXT Slave Mode
EXT Master Mode
Note 38. If M/S bit = “1”, PMPLL bit = “0” and MCKO bit = “1” during the setting of PLL Master Mode, the invalid
clocks are output from MCKO pin when MCKO bit is “1”.
Table 2. Clock Mode Setting (x: Don’t care)
Mode
MCKO bit
0
PLL Master Mode
1
M/S bit
1
PLL3-0 bits
See Table 5
Figure
Figure 19
1
1
0
See Table 5
Figure 20
1
0
See Table 5
Figure 21
Figure 22
Figure 23
Figure 24
0
0
0
1
x
x
MCKO pin
“L”
Selected by
PS1-0 bits
“L”
Selected by
PS1-0 bits
MCKI pin
BICK pin
Output
(Selected by
BCKO bit)
LRCK pin
Selected by
PLL3-0 bits
Output
(1fs)
0
PLL Slave Mode
(PLL Reference Clock: MCKI pin)
1
Selected by
PLL3-0 bits
Input
(
≥
32fs)
Input
(1fs)
PLL Slave Mode
(PLL Reference Clock: LRCK or BICK pin)
0
“L”
GND
Input
(Selected by
PLL3-0 bits)
Input
(
≥
32fs)
Output
(Selected by
BCKO bit)
Input
(1fs)
EXT Slave Mode
0
“L”
Selected by
FS1-0 bits
Input
(1fs)
EXT Master Mode
0
“L”
Selected by
FS1-0 bits
Output
(1fs)
Table 3. Clock pins state in Clock Mode
Master Mode/Slave Mode
The M/S bit selects either master or slave mode. M/S bit = “1” selects master mode and “0” selects slave mode. When the
AK4645 is power-down mode (PDN pin = “L”) and exits reset state, the AK4645 is slave mode. After exiting reset state,
the AK4645 goes to master mode by changing M/S bit = “1”.
When the AK4645 is used by master mode, LRCK and BICK pins are a floating state until M/S bit becomes “1”. LRCK
and BICK pins of the AK4645 should be pulled-down or pulled-up by the resistor (about 100k
) externally to avoid the
floating state.
M/S bit
Mode
0
Slave Mode
1
Master Mode
Table 4. Select Master/Slave Mode
Default
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4646EZ | Stereo CODEC with MIC/SPK-AMP |
| AK4646 | Stereo CODEC with MIC/SPK-AMP |
| AK4646EN | Stereo CODEC with MIC/SPK-AMP |
| AK4647 | Stereo CODEC with MIC/HP-AMP |
| AK4647VN | Stereo CODEC with MIC/HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4645EN | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP |
| AK4645ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4645EZ | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP |
| AK4646 | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with built-in MIC/SPK amplifier |
| AK4646_11 | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
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