AK4753 Datasheet, PDF (20/85 Pages) Asahi Kasei Microsystems – 2-in, 4-out CODEC with DSP Functions

■ Crystal Oscillator Circuit
A clock for the XTI/MCKI pin can be generated by the following three methods.
1. X’tal Mode (PWXTAL bit= “1”)
[AK4753]
XTI
C
160kΩ
(typ)
C
XTO
A_AKK₄4₆7₈5₃3
Figure 16. X’tal Mode
Note: The value of the capacitor depends on a crystal (Typ.10-40pF).
2. External Clock Mode (PWXTAL bit= “1”)
Note: Do not input a clock beyond the voltage of DVDD.
XTI/MCKI
External
Clock
160kΩ
(typ)
XTO
A^AK^K4⁴6⁷8⁵3³
Figure 17. Direct Connection
(Input: CMOS Level)
XTI/MCKI
External _C
Clock
160kΩ
(typ)
XTO
A_AK_K44₆7₈5₃3
Figure 18. AC Coupling Connection
(Input: ≥ 40%DVDD, C=1000pF)
3. OFF Mode of XTI/MCKI, XTO pins (PWXTAL bit= “0”)
XTI/MCKI
XTO
160kΩ
(typ)
AK44678533
Figure 19. OFF Mode
MS1311-E-00
- 20 -
2011/07