參數(shù)資料
型號: AK4536VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述: 16位單聲道編解碼器ALC的
文件頁數(shù): 22/59頁
文件大小: 403K
代理商: AK4536VN
ASAHI KASEI
[AK4536]
MS0174-E-00
2002/09
- 22 -
n
System Clock
There are the following three methods to interface with external devices. (See Table 8)
Mode
Master Mode (M/S bit = “1”)
Pin
MCKI/XTI
11.2896MHz/
12MHz/
12.288MHz
Input
EXT
(PMPLL bit = “0”)
Slave Mode (M/S bit = “0”)
MCKI/XTI
BICK
FCK
BICK
FCK
PLL
(PMPLL bit = “1”)
16fs/32fs/64fs
Output
fs
Output
GND
(MCKPD bit = “1”)
16fs/32fs/64fs
Input
fs
Input
Don’t use (Note 27)
256fs/512fs/1024fs
Input
32fs
Input
fs
Input
Table 8. Clock Operation
Note 27. If this mode is selected, the irregular clocks are output from FCK and BICK pins.
1) PLL, Master Mode (PMPLL bit = “1”, M/S bit = “1”)
When the AK4536 is connected to X’tal oscillator or an external clock (11.2896MHz, 12MHz or 12.288MHz) is input to
MCKI pin, the BICK and FCK clocks are generated by an internal PLL circuit. The BICK is selected among 16fs, 32fs or
64fs, by BCKO1-0 bits. (See Table 9)
Audio interface format corresponds to Mode 0 (DSP Mode) only.
AK4536
DSP or
μ
P
MCKI/XTI
BICK
FCK
SDTO
SDTI
BCLK
FCK
SDTI
SDTO
XTO
1fs
16fs, 32fs, 64fs
Figure 18. PLL & Master Mode
Mode
0
1
2
3
BCKO1 bit
0
0
1
1
Table 9. Output Frequency of BICK at Master Mode
BCKO0 bit
0
1
0
1
BICK Output Frequency
16fs
32fs
64fs
N/A
Default
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