ak4126 AKM Semiconductor, Inc., ak4126 Datasheet - Page 19

• Manufacturer Part Number: ak4126
• Description: 6ch 192khz / 24-bit Asynchronous Src
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Bringing the PDN pin = “L” sets the AK4126 power-down mode and initializes the digital filter. The AK4126 should be
reset once by bringing PDN pin = “L” upon power-up. When PDN pin = “L”, the SDTO output is “L”. The SDTO valid
time is 100ms. Until then, the SDTO outputs “L”. (SDTO shows SDTO1, SDTO2 and SDTO3. SDTI shows SDTI1,
SDTI2 and SDTI3.)
MS0544-E-00
System Reset
Case 1
Case 2
External clocks
(Internal state)
External clocks
External clocks
(Internal state)
External clocks
SDTI
SDTI
SDTO
SDTO
PDN
UNLOCK
PDN
UNLOCK
(Input port)
(Input port)
(Output port)
(Output port)
Power-down
Power-down
Don’t care
Don’t care
Don’t care
“0” data
fs detection
PLL lock &
< 100ms
(No Clock)
(Don’t care)
(Don’t care)
Output Clocks 1
Figure 13. System Reset 2
Input Clocks 1
Figure 12. System Reset
Input Data 1
“0” data
PLL Unlock
Normal data
Normal
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operation
PD
“0” data
PLL lock &
PLL lock &
fs detection
< 100ms
fs detection
< 100ms
Output Clocks 2
Input Clocks 2
Input Data 2
Output Clocks
Input Clocks
Input Data
Normal data
Normal data
Normal
Normal
operation
operation
Power-down
Don’t care
Don’t care
Don’t care
Power-down
Don’t care
Don’t care
Don’t care
“0” data
“0” data
[AK4126]
2006/09