參數(shù)資料
型號(hào): AK4642EN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi): Codec
英文描述: Stereo CODEC with MIC/HP/SPK-AMP
中文描述: 立體聲編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁(yè)數(shù): 26/83頁(yè)
文件大?。?/td> 670K
代理商: AK4642EN
ASAHI KASEI
[AK4642EN]
MS0420-E-00
2005/09
- 26 -
PLL Master Mode (PMPLL bit = “1”, M/S bit = “1”)
When an external clock (11.2896MHz, 12MHz, 12.288MHz, 13.5MHz, 24MHz or 27MHz) is input to MCKI pin, the
MCKO, BICK and LRCK clocks are generated by an internal PLL circuit. The MCKO output frequency is selected by
PS1-0 bits (see Table 9) and the output is enabled by MCKO bit. The BICK output frequency is selected between 32fs or
64fs, by BCKO bit (see Table 10).
AK4642
DSP or
μ
P
MCKO
BICK
LRCK
SDTO
SDTI
BCLK
LRCK
SDTI
SDTO
MCKI
1fs
32fs, 64fs
256fs/128fs/64fs/32fs
11.2896MHz, 12MHz, 12.288MHz
13.5MHz, 24MHz, 27MHz
MCLK
Figure 13. PLL Master Mode
Mode
0
1
2
3
Table 9. MCKO Output Frequency (PLL Mode, MCKO bit = “1”)
PS1 bit
0
0
1
1
PS0 bit
0
1
0
1
MCKO pin
256fs
128fs
64fs
32fs
Default
BCKO bit
BICK Output
Frequency
32fs
64fs
0
1
Default
Table 10. BICK Output Frequency at Master Mode
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