AK4126 Datasheet, PDF (19/27 Pages) Asahi Kasei Microsystems – 6ch 192kHz / 24-Bit Asynchronous SRC

ASAHI KASEI
[AK4126]
„ System Reset
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.)
Case 1
External clocks
(Input port) ^{Don’t care}
SDTI
Don’t care
External clocks
(Output port)
Don’t care
Input Clocks 1
Input Data 1
Output Clocks 1
Input Clocks 2
Input Data 2
Output Clocks 2
Don’t care
Don’t care
Don’t care
PDN
(Internal state) Power-down
< 100ms
PLL lock &
fs detection
Normal
operation
< 100ms
PD
PLL lock &
fs detection
Normal
operation
Power-down
SDTO
“0” data
Normal data
“0” data
Normal data “0” data
UNLOCK
Case 2
External clocks
(Input port)
SDTI
External clocks
(Output port)
PDN
(Internal state) Power-down
Figure 12. System Reset
(No Clock)
(Don’t care)
(Don’t care)
Input Clocks
Input Data
Output Clocks
Don’t care
Don’t care
Don’t care
PLL Unlock
< 100ms
PLL lock &
fs detection
Normal
operation
Power-down
SDTO
“0” data
Normal data “0” data
UNLOCK
Figure 13. System Reset 2
MS0544-E-00
- 19 -
2006/09