參數(shù)資料
型號: AK5700VN
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 16-Bit ツヒ Mono ADC with PLL & MIC-AMP
中文描述: 16位ツヒ單聲道ADC,帶鎖相環(huán)
文件頁數(shù): 57/61頁
文件大小: 519K
代理商: AK5700VN
ASAHI KASEI
[AK5700]
MS0569-E-01
2006/12
- 57 -
Stop of Clock
Master clock can be stopped when ADC is not used.
1. PLL Master Mode
External MCKI
PMPLL bit
(Addr:11H, D0)
MCKO bit
(Addr:16H, D2)
Input
(3)
(1)
(2)
"H" or "L"
M/S bit
(Addr:11H, D1)
Example:
Audio I/F Format: I2S
BCLK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 11.2896MHz
Sampling Frequency: 44.1kHz
(2) Addr:16H, Data:00H
(1) Addr:11H, Data:10H
(3) Stop an external MCKI
Figure 49. Clock Stopping Sequence (1)
<Example>
(1) Power down PLL: PMPLL=M/S bits = “1”
“0”
(2) Stop MCKO clock: MCKO bit = “1”
“0”
(3) Stop an external master clock.
2. PLL Slave Mode (EXLRCK, EXBCLK pin)
EXBCLK
PMPLL bit
(Addr:11H, D0)
Input
(1)
(2)
EXLRCK
Input
(2)
Example
Audio I/F Format : I2S
PLL Reference clock: EXBCLK
BCLK frequency: 64fs
Sampling Frequency: 44.1kHz
(1) Addr:11H, Data:0CH
(2) Stop the external clocks
Figure 50. Clock Stopping Sequence (2)
<Example>
(1) Power down PLL: PMPLL bit = “1”
“0”
(2) Stop the external EXBCLK and EXLRCK clocks
* Clock stop sequence is the same for Slave&Bypass Mode.
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