參數(shù)資料
型號: AK4641
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16 BIT CODEC WITH BLUETOOTH INTERFACE
中文描述: 16位編解碼器與藍牙接口
文件頁數(shù): 8/51頁
文件大?。?/td> 461K
代理商: AK4641
ASAHI KASEI
[AK4641]
MS0301-E-00
2004/05
- 16 -
OPERATION OVERVIEW
System Clock Input
The AK4641 requires a master clock (MCLK). This master clock is input to the AK4641 by inputting an external
CMOS-level clock to the MCLK pin or by inputting an external clock that is greater than 50% of the DVDD level to the
MCLK pin through a capacitor. MCKPD and MCKAC bits should be set as shown in Table 1. ADC and DAC of 16bit
Stereo CODEC are powered-down at MCKPD bit = “1”.
Master Clock
Status
MCKAC bit
MCKPD bit
External Clock Direct Input (Figure 12)
Clock is input to MCLK pin.
0
Clock is not input to MCLK pin.
0
1
AC Coupling Input
(Figure 13)
Clock is input to MCLK pin.
1
0
Clock is not input to MCLK pin.
1
Table 1. MCKPD and MCKAC bits Setting for Master Clock Status
(1) External Clock Direct Input
MCLK
AK4641
MCKPD bit = "0"
External
Clock
MCKAC bit = "0"
Figure 12. External Master Clock Input Block
(2) AC Coupling Input
MCLK
AK4641
MCKPD bit = "0"
External
Clock
MCKAC bit = "1"
0.1uF
Figure 13. External Clock mode (Input:
≥ 50%DVDD)
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