參數(shù)資料
型號(hào): AK4127VF
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 192kHz / 24Bit High Performance Asynchronous SRC
中文描述: 192kHz的/ 24位高性能異步鋼骨混凝土
文件頁(yè)數(shù): 20/29頁(yè)
文件大?。?/td> 489K
代理商: AK4127VF
[AK4127]
Dither
The AK4127 has a dither circuit. The dither circuit adds the dither to the LSB of the output data, which is the value of the
OBIT1-0 pins, by DITHER pin = “H” regardless of the SRC mode or the SRC bypass mode.
System Reset
Bringing the PDN pin = “L” sets the AK4127 power-down mode and initializes the digital filter. The AK4127 should be
reset once by bringing the PDN pin = “L” when power-up. When the PDN pin = “L”, the SDTO output is “L”. The SDTO
valid time is 100ms. Until the output data becomes valid, the SDTO pin outputs “L”.
Case 1
UNLOCK
External clocks
(Input port)
SDTI
Don’t care
SDTO
(Internal state)
Power-down
Normal
operation
PLL lock &
fs detection
< 100ms
Normal data
Input Clocks 1
External clocks
(Output port)
Don’t care
Don’t care
PDN
Power-down
Don’t care
Don’t care
Don’t care
“0” data
Normal
operation
PLL lock &
fs detection
< 100ms
Normal data
PD
Input Data 1
Output Clocks 1
Input Clocks 2
Input Data 2
Output Clocks 2
“0” data
“0” data
Figure 15. System Reset
Case 2
External clocks
(Input port)
SDTI
SDTO
(Internal state)
Power-down
Normal
operation
PLL lock &
fs detection
< 100ms
Normal data
(No Clock)
External clocks
(Output port)
PDN
Power-down
Don’t care
Don’t care
Don’t care
“0” data
PLL Unlock
Input Clocks
Input Data
Output Clocks
“0” data
(Don’t care)
(Don’t care)
UNLOCK
Figure 16. System Reset 2
MS0593-E-01
2007/07
- 20 -
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